Bump version for 0.7.0

Add healthcheck before deploy

Gemfile.lock

@@ -1,11 +1,12 @@
 PATH
   remote: .
   specs:
-    mrsk (0.5.0)
+    mrsk (0.7.0)
       activesupport (>= 7.0)
       dotenv (~> 2.8)
       sshkit (~> 1.21)
       thor (~> 1.2)
+      zeitwerk (~> 2.5)
 
 GEM
   remote: https://rubygems.org/
@@ -91,6 +92,7 @@ PLATFORMS
   arm64-darwin-22
   x86_64-darwin-20
   x86_64-darwin-21
+  x86_64-darwin-22
   x86_64-linux
 
 DEPENDENCIES

README.md

@@ -1,10 +1,10 @@
 # MRSK
 
-MRSK deploys Rails apps in containers to servers running Docker with zero downtime. It uses the dynamic reverse-proxy Traefik to hold requests while the new application container is started and the old one is stopped. It works seamlessly across multiple hosts, using SSHKit to execute commands.
+MRSK deploys web apps in containers to servers running Docker with zero downtime. It uses the dynamic reverse-proxy Traefik to hold requests while the new application container is started and the old one is stopped. It works seamlessly across multiple hosts, using SSHKit to execute commands. It was built for Rails applications, but works with any type of web app that can be bundled with Docker.
 
 ## Installation
 
-Install MRSK globally with `gem install mrsk`. Then, inside your app directory, run `mrsk install`. Now edit the new file `config/deploy.yml`. It could look as simple as this:
+Install MRSK globally with `gem install mrsk`. Then, inside your app directory, run `mrsk init` (or `mrsk init --bundle` within Rails apps where you want a bin/mrsk binstub). Now edit the new file `config/deploy.yml`. It could look as simple as this:
 
 ```yaml
 service: hey
@@ -15,12 +15,17 @@ servers:
 registry:
   username: registry-user-name
   password: <%= ENV.fetch("MRSK_REGISTRY_PASSWORD") %>
+env:
+  secret:
+    - RAILS_MASTER_KEY
 ```
 
-Now you're ready to deploy a multi-arch image to the servers:
+Then edit your `.env` file to add your registry password as `MRSK_REGISTRY_PASSWORD` (and your `RAILS_MASTER_KEY` for production with a Rails app). 
+
+Now you're ready to deploy to the servers:
 
 ```
-MRSK_REGISTRY_PASSWORD=pw mrsk deploy
+mrsk deploy
 ```
 
 This will:
@@ -32,17 +37,30 @@ This will:
 5. Push the image to the registry.
 6. Pull the image from the registry on the servers.
 7. Ensure Traefik is running and accepting traffic on port 80.
-8. Stop any containers running a previous versions of the app.
+8. Ensure your app responds with `200 OK` to `GET /up`.
-9. Start a new container with the version of the app that matches the current git version hash.
+9. Stop any containers running a previous versions of the app.
-10. Prune unused images and stopped containers to ensure servers don't fill up.
+10. Start a new container with the version of the app that matches the current git version hash.
+11. Prune unused images and stopped containers to ensure servers don't fill up.
 
 Voila! All the servers are now serving the app on port 80. If you're just running a single server, you're ready to go. If you're running multiple servers, you need to put a load balancer in front of them.
 
-## Why not just run Capistrano or Kubernetes?
+## Vision
+
+In the past decade+, there's been an explosion in commercial offerings that make deploying web apps easier. Heroku kicked it off with an incredible offering that stayed ahead of the competition seemingly forever. These days we have excellent alternatives like Fly.io and Render. And hosted Kubernetes is making things easier too on AWS, GCP, Digital Ocean, and elsewhere. But these are all offerings that have you renting computers in the cloud at a premium. If you want to run on our own hardware, or even just have a clear migration path to do so, you need to carefully consider how locked in you get to these commercial platforms. Preferably before the bills swallow your business whole!
+
+MRSK seeks to bring the advance in ergonomics pioneered by these commercial offerings to deploying web apps anywhere. Whether that's low-cost cloud options without the managed-service markup from the likes of Digital Ocean, Hetzner, OVH, etc, or it's your own colocated metal. To MRSK, it's all the same. Feed the config file a list of IP addresses with vanilla Ubuntu servers that have seen no prep beyond an added SSH key, and you'll be running in literally minutes.
+
+This structure also gives you enormous portability. You can have your web app deployed on several clouds at ease like this. Or you can buy the baseline with your own hardware, then deploy to a cloud before a big seasonal spike to get more capacity. When you're not locked into a single provider from a tooling perspective, there's a lot of compelling options available.
+
+Ultimately, MRSK is meant to compress the complexity of going to production using open source tooling that isn't tied to any commercial offering. Not to zero, though. You're probably still better off with a fully managed service if basic Linux or Docker is still difficult, but from an early stage when those concepts are familiar.
+
+## Why not just run Capistrano, Kubernetes or Docker Swarm?
 
 MRSK basically is Capistrano for Containers, which allow us to use vanilla servers as the hosts. No need to ensure that the servers have just the right version of Ruby or other dependencies you need. That all lives in the Docker image now. You can boot a brand new Ubuntu (or whatever) server, add it to the deploy servers of MRSK, and it'll be auto-provisioned with Docker, and run right away. Docker's layer caching also allows for quicker deployments with less mucking about on the server. And the images built for MRSK can be used for CI or later introspection.
 
-Kubernetes is a beast. Running it yourself on your own hardware is not for the faint of heart. It's a fine option if you want to run on someone else's platform, like Render or Fly, but if you'd like the freedom to move between cloud and your own hardware, or even mix the two, MRSK is much simpler. You can see everything that's going on, it's just basic Docker commands being called.
+Kubernetes is a beast. Running it yourself on your own hardware is not for the faint of heart. It's a fine option if you want to run on someone else's platform, either transparently [like Render](https://thenewstack.io/render-cloud-deployment-with-less-engineering/) or explicitly on AWS/GCP, but if you'd like the freedom to move between cloud and your own hardware, or even mix the two, MRSK is much simpler. You can see everything that's going on, it's just basic Docker commands being called.
+
+Docker Swarm is much simpler than Kubernetes, but it's still built on the same declarative model that uses state reconciliation. MRSK is intentionally designed to around imperative commands, like Capistrano.
 
 ## Configuration
 
@@ -68,10 +86,27 @@ registry:
 
 ### Using a different SSH user than root
 
-The default SSH user is root, but you can change it using `ssh_user`:
+The default SSH user is root, but you can change it using `ssh/user`:
 
 ```yaml
-ssh_user: app
+ssh:
+  user: app
+```
+
+### Using a proxy SSH host
+
+If you need to connect to server through a proxy host, you can use `ssh/proxy`:
+
+```yaml
+ssh:
+  proxy: "192.168.0.1" # defaults to root as the user
+```
+
+Or with specific user:
+
+```yaml
+ssh:
+  proxy: "app@192.168.0.1"
 ```
 
 ### Using env variables
@@ -149,10 +184,10 @@ You can specialize the default Traefik rules by setting labels on the containers
 
 ```
 labels:
-  traefik.http.routers.hey.rule: '''Host(`app.hey.com`)'''
+  traefik.http.routers.hey.rule: Host(\`app.hey.com\`)
 ```
 
-Note: The extra quotes are needed to ensure the rule is passed in correctly!
+Note: The escaped backticks are needed to ensure the rule is passed in correctly and not treated as command substitution by Bash!
 
 This allows you to run multiple applications on the same server sharing the same Traefik instance and port.
 See https://doc.traefik.io/traefik/routing/routers/#rule for a full list of available routing rules.
@@ -225,14 +260,15 @@ builder:
 
 This build secret can then be referenced in the Dockerfile:
 
-```
+```dockerfile
 # Copy Gemfiles
 COPY Gemfile Gemfile.lock ./
 
-# Install dependencies, including private repositories via access token
+# Install dependencies, including private repositories via access token (then remove bundle cache with exposed GITHUB_TOKEN)
 RUN --mount=type=secret,id=GITHUB_TOKEN \
   BUNDLE_GITHUB__COM=x-access-token:$(cat /run/secrets/GITHUB_TOKEN) \
-  bundle install
+  bundle install && \
+  rm -rf /usr/local/bundle/cache
 ```
 
 ### Using command arguments for Traefik
@@ -241,12 +277,13 @@ You can customize the traefik command line:
 
 ```yaml
 traefik:
+  args:
     accesslog: true
     accesslog.format: json
-  metrics.prometheus: true
-  metrics.prometheus.buckets: 0.1,0.3,1.2,5.0
 ```
 
+This will start the traefik container with `--accesslog=true accesslog.format=json`.
+
 ### Configuring build args for new images
 
 Build arguments that aren't secret can also be configured:
@@ -265,14 +302,6 @@ ARG RUBY_VERSION
 FROM ruby:$RUBY_VERSION-slim as base
 ```
 
-### Using without RAILS_MASTER_KEY
-
-If you're using MRSK with older Rails apps that predate RAILS_MASTER_KEY, or with a non-Rails app, you can skip the default usage and reference:
-
-```yaml
-skip_master_key: true
-```
-
 ### Using accessories for database, cache, search services
 
 You can manage your accessory services via MRSK as well. The services will build off public images, and will not be automatically updated when you deploy:
@@ -300,6 +329,58 @@ accessories:
 
 Now run `mrsk accessory start mysql` to start the MySQL server on 1.1.1.3. See `mrsk accessory` for all the commands possible.
 
+### Using a generated .env file
+
+If you're using a centralized secret store, like 1Password, you can create `.env.erb` as a template which looks up the secrets. Example of a .env.erb file:
+
+```erb
+<% if (session_token = `op signin --account my-one-password-account --raw`.strip) != "" %># Generated by mrsk envify
+GITHUB_TOKEN=<%= `gh config get -h github.com oauth_token`.strip %>
+MRSK_REGISTRY_PASSWORD=<%= `op read "op://Vault/Docker Hub/password" -n --session  #{session_token}` %>
+RAILS_MASTER_KEY=<%= `op read "op://Vault/My App/RAILS_MASTER_SECRET" -n --session #{session_token}` %>
+MYSQL_ROOT_PASSWORD=<%= `op read "op://Vault/My App/MYSQL_ROOT_PASSWORD" -n --session #{session_token}` %>
+<% else raise ArgumentError, "Session token missing" end %>
+```
+
+This template can safely be checked into git. Then everyone deploying the app can run `mrsk envify` when they setup the app for the first time or passwords change to get the correct `.env` file.
+
+If you need separate env variables for different destinations, you can set them with `.env.destination.erb` for the template, which will generate `.env.staging` when run with `mrsk envify -d staging`.
+
+### Using audit broadcasts
+
+If you'd like to broadcast audits of deploys, rollbacks, etc to a chatroom or elsewhere, you can configure the `audit_broadcast_cmd` setting with the path to a bin file that reads the audit line from STDIN, and then does whatever with it:
+
+```yaml
+audit_broadcast_cmd:
+  bin/audit_broadcast
+```
+
+The broadcast command could look something like:
+
+```bash
+#!/usr/bin/env bash
+read
+curl -q -d content="[My app] ${REPLY}" https://3.basecamp.com/XXXXX/integrations/XXXXX/buckets/XXXXX/chats/XXXXX/lines
+```
+
+That'll post a line like follows to a preconfigured chatbot in Basecamp:
+
+```
+[My App] [2023-02-18 11:29:52] [dhh] Rolled back to version d264c4e92470ad1bd18590f04466787262f605de
+```
+
+### Using custom healthcheck path or port
+
+MRSK defaults to checking the health of your application again `/up` on port 3000. You can tailor both with the `healthcheck` setting:
+
+```yaml
+healthcheck:
+  path: /healthz
+  port: 4000
+```
+
+This will ensure your application is configured with a traefik label for the healthcheck against `/healthz` and that the pre-deploy healthcheck that MRSK performs is done against the same path on port 4000.
+
 ## Commands
 
 ### Running commands on servers

bin/mrsk

@@ -3,8 +3,7 @@
 # Prevent failures from being reported twice.
 Thread.report_on_exception = false
 
-require "dotenv/load"
+require "mrsk"
-require "mrsk/cli"
 
 begin
   Mrsk::Cli::Main.start(ARGV)

lib/mrsk.rb

@@ -1,5 +1,9 @@
 module Mrsk
 end
 
-require "mrsk/version"
+require "zeitwerk"
-require "mrsk/commander"
+
+loader = Zeitwerk::Loader.for_gem
+loader.ignore("#{__dir__}/mrsk/sshkit_with_ext.rb")
+loader.setup
+loader.eager_load # We need all commands loaded.

lib/mrsk/cli.rb

@@ -1,9 +1,5 @@
-require "mrsk"
-
 module Mrsk::Cli
 end
 
 # SSHKit uses instance eval, so we need a global const for ergonomics
 MRSK = Mrsk::Commander.new
-
-require "mrsk/cli/main"

lib/mrsk/cli/accessory.rb

@@ -1,5 +1,3 @@
-require "mrsk/cli/base"
-
 class Mrsk::Cli::Accessory < Mrsk::Cli::Base
   desc "boot [NAME]", "Boot accessory service on host (use NAME=all to boot all accessories)"
   def boot(name)
@@ -9,7 +7,13 @@ class Mrsk::Cli::Accessory < Mrsk::Cli::Base
       with_accessory(name) do |accessory|
         directories(name)
         upload(name)
-        on(accessory.host) { execute *accessory.run }
+
+        on(accessory.host) do
+          execute *MRSK.auditor.record("Booted #{name} accessory"), verbosity: :debug
+          execute *accessory.run
+        end
+
+        audit_broadcast "Booted accessory #{name}"
       end
     end
   end
@@ -52,14 +56,20 @@ class Mrsk::Cli::Accessory < Mrsk::Cli::Base
   desc "start [NAME]", "Start existing accessory on host"
   def start(name)
     with_accessory(name) do |accessory|
-      on(accessory.host) { execute *accessory.start }
+      on(accessory.host) do
+        execute *MRSK.auditor.record("Started #{name} accessory"), verbosity: :debug
+        execute *accessory.start
+      end
     end
   end
 
   desc "stop [NAME]", "Stop accessory on host"
   def stop(name)
     with_accessory(name) do |accessory|
-      on(accessory.host) { execute *accessory.stop, raise_on_non_zero_exit: false }
+      on(accessory.host) do
+        execute *MRSK.auditor.record("Stopped #{name} accessory"), verbosity: :debug
+        execute *accessory.stop, raise_on_non_zero_exit: false
+      end
     end
   end
 
@@ -98,11 +108,17 @@ class Mrsk::Cli::Accessory < Mrsk::Cli::Base
 
       when options[:reuse]
         say "Launching command from existing container...", :magenta
-        on(accessory.host) { capture_with_info(*accessory.execute_in_existing_container(cmd)) }
+        on(accessory.host) do
+          execute *MRSK.auditor.record("Executed cmd '#{cmd}' on #{name} accessory"), verbosity: :debug
+          capture_with_info(*accessory.execute_in_existing_container(cmd))
+        end
 
       else
         say "Launching command from new container...", :magenta
-        on(accessory.host) { capture_with_info(*accessory.execute_in_new_container(cmd)) }
+        on(accessory.host) do
+          execute *MRSK.auditor.record("Executed cmd '#{cmd}' on #{name} accessory"), verbosity: :debug
+          capture_with_info(*accessory.execute_in_new_container(cmd))
+        end
       end
     end
   end
@@ -150,21 +166,29 @@ class Mrsk::Cli::Accessory < Mrsk::Cli::Base
   desc "remove_container [NAME]", "Remove accessory container from host"
   def remove_container(name)
     with_accessory(name) do |accessory|
-      on(accessory.host) { execute *accessory.remove_container }
+      on(accessory.host) do
+        execute *MRSK.auditor.record("Remove #{name} accessory container"), verbosity: :debug
+        execute *accessory.remove_container
+      end
     end
   end
 
   desc "remove_image [NAME]", "Remove accessory image from host"
   def remove_image(name)
     with_accessory(name) do |accessory|
-      on(accessory.host) { execute *accessory.remove_image }
+      on(accessory.host) do
+        execute *MRSK.auditor.record("Removed #{name} accessory image"), verbosity: :debug
+        execute *accessory.remove_image
+      end
     end
   end
 
   desc "remove_service_directory [NAME]", "Remove accessory directory used for uploaded files and data directories from host"
   def remove_service_directory(name)
     with_accessory(name) do |accessory|
-      on(accessory.host) { execute *accessory.remove_service_directory }
+      on(accessory.host) do
+        execute *accessory.remove_service_directory
+      end
     end
   end
 

lib/mrsk/cli/app.rb

@@ -1,26 +1,23 @@
-require "mrsk/cli/base"
-
 class Mrsk::Cli::App < Mrsk::Cli::Base
   desc "boot", "Boot app on servers (or reboot app if already running)"
   def boot
-    cli = self
-
-    say "Ensure no other version of the app is running...", :magenta
-    stop
-
     say "Get most recent version available as an image...", :magenta unless options[:version]
     using_version(options[:version] || most_recent_version_available) do |version|
       say "Start container with version #{version} (or reboot if already running)...", :magenta
 
       MRSK.config.roles.each do |role|
         on(role.hosts) do |host|
+          execute *MRSK.auditor.record("Booted app version #{version}"), verbosity: :debug
+
           begin
+            execute *MRSK.app.stop, raise_on_non_zero_exit: false
             execute *MRSK.app.run(role: role.name)
           rescue SSHKit::Command::Failed => e
             if e.message =~ /already in use/
               error "Rebooting container with same version already deployed on #{host}"
+              execute *MRSK.auditor.record("Rebooted app version #{version}"), verbosity: :debug
 
-              cli.remove_container version
+              execute *MRSK.app.remove_container(version: version)
               execute *MRSK.app.run(role: role.name)
             else
               raise
@@ -33,12 +30,18 @@ class Mrsk::Cli::App < Mrsk::Cli::Base
 
   desc "start", "Start existing app on servers (use --version=<git-hash> to designate specific version)"
   def start
-    on(MRSK.hosts) { execute *MRSK.app.start, raise_on_non_zero_exit: false }
+    on(MRSK.hosts) do
+      execute *MRSK.auditor.record("Started app version #{MRSK.version}"), verbosity: :debug
+      execute *MRSK.app.start, raise_on_non_zero_exit: false
+    end
   end
 
   desc "stop", "Stop app on servers"
   def stop
-    on(MRSK.hosts) { execute *MRSK.app.stop, raise_on_non_zero_exit: false }
+    on(MRSK.hosts) do
+      execute *MRSK.auditor.record("Stopped app"), verbosity: :debug
+      execute *MRSK.app.stop, raise_on_non_zero_exit: false
+    end
   end
 
   desc "details", "Display details about app containers"
@@ -68,15 +71,22 @@ class Mrsk::Cli::App < Mrsk::Cli::Base
     when options[:reuse]
       say "Get current version of running container...", :magenta unless options[:version]
       using_version(options[:version] || current_running_version) do |version|
-        say "Launching command with version #{version} from existing container on #{MRSK.primary_host}...", :magenta
+        say "Launching command with version #{version} from existing container...", :magenta
-        on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.execute_in_existing_container(cmd)) }
+
+        on(MRSK.hosts) do |host|
+          execute *MRSK.auditor.record("Executed cmd '#{cmd}' on app version #{version}"), verbosity: :debug
+          puts_by_host host, capture_with_info(*MRSK.app.execute_in_existing_container(cmd))
+        end
       end
 
     else
       say "Get most recent version available as an image...", :magenta unless options[:version]
       using_version(options[:version] || most_recent_version_available) do |version|
-        say "Launching command with version #{version} from new container on #{MRSK.primary_host}...", :magenta
+        say "Launching command with version #{version} from new container...", :magenta
-        on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.execute_in_new_container(cmd)) }
+        on(MRSK.hosts) do |host|
+          execute *MRSK.auditor.record("Executed cmd '#{cmd}' on app version #{version}"), verbosity: :debug
+          puts_by_host host, capture_with_info(*MRSK.app.execute_in_new_container(cmd))
+        end
       end
     end
   end
@@ -91,11 +101,6 @@ class Mrsk::Cli::App < Mrsk::Cli::Base
     on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.list_images) }
   end
 
-  desc "current", "Return the current running container ID"
-  def current
-    on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.current_container_id) }
-  end
-  
   desc "logs", "Show lines from app on servers"
   option :since, aliases: "-s", desc: "Show logs since timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)"
   option :lines, type: :numeric, aliases: "-n", desc: "Number of log lines to pull from each server"
@@ -134,17 +139,26 @@ class Mrsk::Cli::App < Mrsk::Cli::Base
 
   desc "remove_container [VERSION]", "Remove app container with given version from servers"
   def remove_container(version)
-    on(MRSK.hosts) { execute *MRSK.app.remove_container(version: version) }
+    on(MRSK.hosts) do
+      execute *MRSK.auditor.record("Removed app container with version #{version}"), verbosity: :debug
+      execute *MRSK.app.remove_container(version: version)
+    end
   end
 
   desc "remove_containers", "Remove all app containers from servers"
   def remove_containers
-    on(MRSK.hosts) { execute *MRSK.app.remove_containers }
+    on(MRSK.hosts) do
+      execute *MRSK.auditor.record("Removed all app containers"), verbosity: :debug
+      execute *MRSK.app.remove_containers
+    end
   end
 
   desc "remove_images", "Remove all app images from servers"
   def remove_images
-    on(MRSK.hosts) { execute *MRSK.app.remove_images }
+    on(MRSK.hosts) do
+      execute *MRSK.auditor.record("Removed all app images"), verbosity: :debug
+      execute *MRSK.app.remove_images
+    end
   end
 
   desc "current_version", "Shows the version currently running"

lib/mrsk/cli/base.rb

@@ -1,4 +1,5 @@
 require "thor"
+require "dotenv"
 require "mrsk/sshkit_with_ext"
 
 module Mrsk::Cli
@@ -21,10 +22,19 @@ module Mrsk::Cli
 
     def initialize(*)
       super
+      load_envs
       initialize_commander(options)
     end
 
     private
+      def load_envs
+        if destination = options[:destination]
+          Dotenv.load(".env.#{destination}", ".env")
+        else
+          Dotenv.load(".env")
+        end
+      end
+
       def initialize_commander(options)
         MRSK.tap do |commander|
           commander.config_file = Pathname.new(File.expand_path(options[:config_file]))
@@ -49,9 +59,14 @@ module Mrsk::Cli
       def print_runtime
         started_at = Time.now
         yield
+        return Time.now - started_at
       ensure
         runtime = Time.now - started_at
         puts "  Finished all in #{sprintf("%.1f seconds", runtime)}"
       end
+
+      def audit_broadcast(line)
+        run_locally { execute *MRSK.auditor.broadcast(line), verbosity: :debug }
+      end
   end
 end

lib/mrsk/cli/build.rb

@@ -1,5 +1,3 @@
-require "mrsk/cli/base"
-
 class Mrsk::Cli::Build < Mrsk::Cli::Base
   desc "deliver", "Deliver a newly built app image to servers"
   def deliver
@@ -30,7 +28,10 @@ class Mrsk::Cli::Build < Mrsk::Cli::Base
 
   desc "pull", "Pull app image from the registry onto servers"
   def pull
-    on(MRSK.hosts) { execute *MRSK.builder.pull }
+    on(MRSK.hosts) do
+      execute *MRSK.auditor.record("Pulled image with version #{MRSK.version}"), verbosity: :debug
+      execute *MRSK.builder.pull
+    end
   end
 
   desc "create", "Create a local build setup"

lib/mrsk/cli/healthcheck.rb

@@ -0,0 +1,29 @@
+class Mrsk::Cli::Healthcheck < Mrsk::Cli::Base
+  desc "perform", "Health check the current version of the app"
+  def perform
+    on(MRSK.primary_host) do
+      begin
+        execute *MRSK.healthcheck.run
+
+        target = "Health check against #{MRSK.config.healthcheck["path"]}"
+
+        if capture_with_info(*MRSK.healthcheck.curl) == "200"
+          info "#{target} succeeded with 200 OK!"
+        else
+          # Catches 1xx, 2xx, 3xx
+          raise SSHKit::Command::Failed, "#{target} failed to return 200 OK!"
+        end
+      rescue SSHKit::Command::Failed => e
+        if e.message =~ /curl/
+          # Catches 4xx, 5xx
+          raise SSHKit::Command::Failed, "#{target} failed to return 200 OK!"
+        else
+          raise
+        end
+      ensure
+        execute *MRSK.healthcheck.stop, raise_on_non_zero_exit: false
+        execute *MRSK.healthcheck.remove, raise_on_non_zero_exit: false
+      end
+    end
+  end
+end

lib/mrsk/cli/main.rb

@@ -1,13 +1,3 @@
-require "mrsk/cli/base"
-
-require "mrsk/cli/accessory"
-require "mrsk/cli/app"
-require "mrsk/cli/build"
-require "mrsk/cli/prune"
-require "mrsk/cli/registry"
-require "mrsk/cli/server"
-require "mrsk/cli/traefik"
-
 class Mrsk::Cli::Main < Mrsk::Cli::Base
   desc "setup", "Setup all accessories and deploy the app to servers"
   def setup
@@ -20,7 +10,7 @@ class Mrsk::Cli::Main < Mrsk::Cli::Base
 
   desc "deploy", "Deploy the app to servers"
   def deploy
-    print_runtime do
+    runtime = print_runtime do
       say "Ensure Docker is installed...", :magenta
       invoke "mrsk:cli:server:bootstrap"
 
@@ -33,34 +23,49 @@ class Mrsk::Cli::Main < Mrsk::Cli::Base
       say "Ensure Traefik is running...", :magenta
       invoke "mrsk:cli:traefik:boot"
 
+      say "Ensure app can pass healthcheck...", :magenta
+      invoke "mrsk:cli:healthcheck:perform"
+
       invoke "mrsk:cli:app:boot"
 
       say "Prune old containers and images...", :magenta
       invoke "mrsk:cli:prune:all"
     end
+
+    audit_broadcast "Deployed app in #{runtime.to_i} seconds"
   end
 
   desc "redeploy", "Deploy new version of the app to servers (without bootstrapping servers, starting Traefik, pruning, and registry login)"
   def redeploy
-    print_runtime do
+    runtime = print_runtime do
       say "Build and push app image...", :magenta
       invoke "mrsk:cli:build:deliver"
 
+      say "Ensure app can pass healthcheck...", :magenta
+      invoke "mrsk:cli:healthcheck:perform"
+
       invoke "mrsk:cli:app:boot"
     end
+
+    audit_broadcast "Redeployed app in #{runtime.to_i} seconds"
   end
 
   desc "rollback [VERSION]", "Rollback the app to VERSION"
   def rollback(version)
     MRSK.version = version
 
-    cli = self
+    if container_name_available?(MRSK.config.service_with_version)
+      say "Stop current version, then start version #{version}...", :magenta
 
-    cli.say "Stop current version, then start version #{version}...", :magenta
+      on(MRSK.hosts) do |host|
-    on(MRSK.hosts) do
         execute *MRSK.app.stop, raise_on_non_zero_exit: false
         execute *MRSK.app.start
       end
+
+      audit_broadcast "Rolled back app to version #{version}"
+    else
+      say "The app version '#{version}' is not available as a container (use 'mrsk app containers' for available versions)", :red
+    end
   end
 
   desc "details", "Display details about Traefik and app containers"
@@ -70,6 +75,13 @@ class Mrsk::Cli::Main < Mrsk::Cli::Base
     invoke "mrsk:cli:accessory:details", [ "all" ]
   end
 
+  desc "audit", "Show audit log from servers"
+  def audit
+    on(MRSK.hosts) do |host|
+      puts_by_host host, capture_with_info(*MRSK.auditor.reveal)
+    end
+  end
+
   desc "config", "Show combined config"
   def config
     run_locally do
@@ -77,22 +89,29 @@ class Mrsk::Cli::Main < Mrsk::Cli::Base
     end
   end
 
-  desc "install", "Create config stub in config/deploy.yml and binstub in bin/mrsk"
+  desc "init", "Create config stub in config/deploy.yml and env stub in .env"
-  option :skip_binstub, type: :boolean, default: false, desc: "Skip adding MRSK to the Gemfile and creating bin/mrsk binstub"
+  option :bundle, type: :boolean, default: false, desc: "Add MRSK to the Gemfile and create a bin/mrsk binstub"
-  def install
+  def init
     require "fileutils"
 
     if (deploy_file = Pathname.new(File.expand_path("config/deploy.yml"))).exist?
       puts "Config file already exists in config/deploy.yml (remove first to create a new one)"
     else
+      FileUtils.mkdir_p deploy_file.dirname
       FileUtils.cp_r Pathname.new(File.expand_path("templates/deploy.yml", __dir__)), deploy_file
       puts "Created configuration file in config/deploy.yml"
     end
 
-    unless options[:skip_binstub]
+    unless (deploy_file = Pathname.new(File.expand_path(".env"))).exist?
+      FileUtils.cp_r Pathname.new(File.expand_path("templates/template.env", __dir__)), deploy_file
+      puts "Created .env file"
+    end
+
+    if options[:bundle]
       if (binstub = Pathname.new(File.expand_path("bin/mrsk"))).exist?
         puts "Binstub already exists in bin/mrsk (remove first to create a new one)"
       else
+        puts "Adding MRSK to Gemfile and bundle..."
         `bundle add mrsk`
         `bundle binstubs mrsk`
         puts "Created binstub file in bin/mrsk"
@@ -100,6 +119,19 @@ class Mrsk::Cli::Main < Mrsk::Cli::Base
     end
   end
 
+  desc "envify", "Create .env by evaluating .env.erb (or .env.staging.erb -> .env.staging when using -d staging)"
+  def envify
+    if destination = options[:destination]
+      env_template_path = ".env.#{destination}.erb"
+      env_path          = ".env.#{destination}"
+    else
+      env_template_path = ".env.erb"
+      env_path          = ".env"
+    end
+
+    File.write(env_path, ERB.new(File.read(env_template_path)).result, perm: 0600)
+  end
+
   desc "remove", "Remove Traefik, app, and registry session from servers"
   def remove
     invoke "mrsk:cli:traefik:remove"
@@ -121,6 +153,9 @@ class Mrsk::Cli::Main < Mrsk::Cli::Base
   desc "build", "Build the application image"
   subcommand "build", Mrsk::Cli::Build
 
+  desc "healthcheck", "Healthcheck the application"
+  subcommand "healthcheck", Mrsk::Cli::Healthcheck
+
   desc "prune", "Prune old application images and containers"
   subcommand "prune", Mrsk::Cli::Prune
 
@@ -132,4 +167,11 @@ class Mrsk::Cli::Main < Mrsk::Cli::Base
 
   desc "traefik", "Manage the Traefik load balancer"
   subcommand "traefik", Mrsk::Cli::Traefik
+
+  private
+    def container_name_available?(container_name, host: MRSK.primary_host)
+      container_names = nil
+      on(host) { container_names = capture_with_info(*MRSK.app.list_container_names).split("\n") }
+      Array(container_names).include?(container_name)
+    end
 end

lib/mrsk/cli/prune.rb

@@ -1,5 +1,3 @@
-require "mrsk/cli/base"
-
 class Mrsk::Cli::Prune < Mrsk::Cli::Base
   desc "all", "Prune unused images and stopped containers"
   def all
@@ -7,13 +5,19 @@ class Mrsk::Cli::Prune < Mrsk::Cli::Base
     invoke :images
   end
 
-  desc "images", "Prune unused images older than 30 days"
+  desc "images", "Prune unused images older than 7 days"
   def images
-    on(MRSK.hosts) { execute *MRSK.prune.images }
+    on(MRSK.hosts) do
+      execute *MRSK.auditor.record("Pruned images"), verbosity: :debug
+      execute *MRSK.prune.images
+    end
   end
 
   desc "containers", "Prune stopped containers for the service older than 3 days"
   def containers
-    on(MRSK.hosts) { execute *MRSK.prune.containers }
+    on(MRSK.hosts) do
+      execute *MRSK.auditor.record("Pruned containers"), verbosity: :debug
+      execute *MRSK.prune.containers
+    end
   end
 end

lib/mrsk/cli/registry.rb

@@ -1,5 +1,3 @@
-require "mrsk/cli/base"
-
 class Mrsk::Cli::Registry < Mrsk::Cli::Base
   desc "login", "Login to the registry locally and remotely"
   def login

lib/mrsk/cli/server.rb

@@ -1,5 +1,3 @@
-require "mrsk/cli/base"
-
 class Mrsk::Cli::Server < Mrsk::Cli::Base
   desc "bootstrap", "Ensure Docker is installed on the servers"
   def bootstrap

lib/mrsk/cli/templates/template.env

@@ -0,0 +1,2 @@
+MRSK_REGISTRY_PASSWORD=change-this
+RAILS_MASTER_KEY=another-env

lib/mrsk/cli/traefik.rb

@@ -1,5 +1,3 @@
-require "mrsk/cli/base"
-
 class Mrsk::Cli::Traefik < Mrsk::Cli::Base
   desc "boot", "Boot Traefik on servers"
   def boot
@@ -15,12 +13,18 @@ class Mrsk::Cli::Traefik < Mrsk::Cli::Base
 
   desc "start", "Start existing Traefik on servers"
   def start
-    on(MRSK.traefik_hosts) { execute *MRSK.traefik.start, raise_on_non_zero_exit: false }
+    on(MRSK.traefik_hosts) do
+      execute *MRSK.auditor.record("Started traefik"), verbosity: :debug
+      execute *MRSK.traefik.start, raise_on_non_zero_exit: false
+    end
   end
 
   desc "stop", "Stop Traefik on servers"
   def stop
-    on(MRSK.traefik_hosts) { execute *MRSK.traefik.stop, raise_on_non_zero_exit: false }
+    on(MRSK.traefik_hosts) do
+      execute *MRSK.auditor.record("Stopped traefik"), verbosity: :debug
+      execute *MRSK.traefik.stop, raise_on_non_zero_exit: false
+    end
   end
 
   desc "restart", "Restart Traefik on servers"
@@ -67,11 +71,17 @@ class Mrsk::Cli::Traefik < Mrsk::Cli::Base
 
   desc "remove_container", "Remove Traefik container from servers"
   def remove_container
-    on(MRSK.traefik_hosts) { execute *MRSK.traefik.remove_container }
+    on(MRSK.traefik_hosts) do
+      execute *MRSK.auditor.record("Removed traefik container"), verbosity: :debug
+      execute *MRSK.traefik.remove_container
+    end
   end
 
   desc "remove_container", "Remove Traefik image from servers"
   def remove_image
-    on(MRSK.traefik_hosts) { execute *MRSK.traefik.remove_image }
+    on(MRSK.traefik_hosts) do
+      execute *MRSK.auditor.record("Removed traefik image"), verbosity: :debug
+      execute *MRSK.traefik.remove_image
+    end
   end
 end

lib/mrsk/commander.rb

@@ -1,13 +1,5 @@
 require "active_support/core_ext/enumerable"
 
-require "mrsk/configuration"
-require "mrsk/commands/accessory"
-require "mrsk/commands/app"
-require "mrsk/commands/builder"
-require "mrsk/commands/prune"
-require "mrsk/commands/traefik"
-require "mrsk/commands/registry"
-
 class Mrsk::Commander
   attr_accessor :config_file, :destination, :verbosity, :version
 
@@ -77,25 +69,45 @@ class Mrsk::Commander
     Mrsk::Commands::Accessory.new(config, name: name)
   end
 
+  def auditor
+    @auditor ||= Mrsk::Commands::Auditor.new(config)
+  end
+
+  def healthcheck
+    @healthcheck ||= Mrsk::Commands::Healthcheck.new(config)
+  end
+
 
   def with_verbosity(level)
-    old_level = SSHKit.config.output_verbosity
+    old_level = self.verbosity
+
+    self.verbosity = level
     SSHKit.config.output_verbosity = level
+
     yield
   ensure
+    self.verbosity = old_level
     SSHKit.config.output_verbosity = old_level
   end
 
   # Test-induced damage!
   def reset
     @config = @config_file = @destination = @version = nil
-    @app = @builder = @traefik = @registry = @prune = nil
+    @app = @builder = @traefik = @registry = @prune = @auditor = nil
     @verbosity = :info
   end
 
   private
     def cascading_version
-      version.presence || ENV["VERSION"] || `git rev-parse HEAD`.strip
+      version.presence || ENV["VERSION"] || current_commit_hash
+    end
+
+    def current_commit_hash
+      if system("git rev-parse")
+        `git rev-parse HEAD`.strip
+      else
+        raise "Can't use commit hash as version, no git repository found in #{Dir.pwd}"
+      end
     end
 
     # Lazy setup of SSHKit

lib/mrsk/commands/accessory.rb

@@ -1,5 +1,3 @@
-require "mrsk/commands/base"
-
 class Mrsk::Commands::Accessory < Mrsk::Commands::Base
   attr_reader :accessory_config
   delegate :service_name, :image, :host, :port, :files, :directories, :env_args, :volume_args, :label_args, to: :accessory_config
@@ -14,6 +12,7 @@ class Mrsk::Commands::Accessory < Mrsk::Commands::Base
       "--name", service_name,
       "-d",
       "--restart", "unless-stopped",
+      "--log-opt", "max-size=#{MAX_LOG_SIZE}",
       "-p", port,
       *env_args,
       *volume_args,
@@ -41,10 +40,10 @@ class Mrsk::Commands::Accessory < Mrsk::Commands::Base
   end
 
   def follow_logs(grep: nil)
-    run_over_ssh pipe(
+    run_over_ssh \
+      pipe \
         docker(:logs, service_name, "-t", "-n", "10", "-f", "2>&1"),
         (%(grep "#{grep}") if grep)
-    ).join(" ")
   end
 
 
@@ -66,11 +65,11 @@ class Mrsk::Commands::Accessory < Mrsk::Commands::Base
   end
 
   def execute_in_existing_container_over_ssh(*command)
-    run_over_ssh execute_in_existing_container(*command, interactive: true).join(" ")
+    run_over_ssh execute_in_existing_container(*command, interactive: true)
   end
 
   def execute_in_new_container_over_ssh(*command)
-    run_over_ssh execute_in_new_container(*command, interactive: true).join(" ")
+    run_over_ssh execute_in_new_container(*command, interactive: true)
   end
 
   def run_over_ssh(command)

lib/mrsk/commands/app.rb

@@ -1,5 +1,3 @@
-require "mrsk/commands/base"
-
 class Mrsk::Commands::App < Mrsk::Commands::Base
   def run(role: :web)
     role = config.role(role)
@@ -7,8 +5,8 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
     docker :run,
       "-d",
       "--restart unless-stopped",
+      "--log-opt", "max-size=#{MAX_LOG_SIZE}",
       "--name", service_with_version,
-      *rails_master_key_arg,
       *role.env_args,
       *config.volume_args,
       *role.label_args,
@@ -37,11 +35,13 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
   end
 
   def follow_logs(host:, grep: nil)
-    run_over_ssh pipe(
+    run_over_ssh \
+      pipe(
         current_container_id,
         "xargs docker logs -t -n 10 -f 2>&1",
         (%(grep "#{grep}") if grep)
-    ).join(" "), host: host
+      ),
+      host: host
   end
 
 
@@ -56,7 +56,6 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
     docker :run,
       ("-it" if interactive),
       "--rm",
-      *rails_master_key_arg,
       *config.env_args,
       *config.volume_args,
       config.absolute_image,
@@ -64,11 +63,11 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
   end
 
   def execute_in_existing_container_over_ssh(*command, host:)
-    run_over_ssh execute_in_existing_container(*command, interactive: true).join(" "), host: host
+    run_over_ssh execute_in_existing_container(*command, interactive: true), host: host
   end
 
   def execute_in_new_container_over_ssh(*command, host:)
-    run_over_ssh execute_in_new_container(*command, interactive: true).join(" "), host: host
+    run_over_ssh execute_in_new_container(*command, interactive: true), host: host
   end
 
 
@@ -76,10 +75,6 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
     docker :ps, "-q", *service_filter
   end
 
-  def container_id_for(container_name:)
-    docker :container, :ls, "-a", "-f", "name=#{container_name}", "-q"
-  end
-
   def current_running_version
     # FIXME: Find more graceful way to extract the version from "app-version" than using sed and tail!
     pipe \
@@ -94,11 +89,21 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
       "head -n 1"
   end
 
+  def all_versions_from_available_containers
+    pipe \
+      docker(:image, :ls, "--format", '"{{.Tag}}"', config.repository),
+      "head -n 1"
+  end
+
 
   def list_containers
     docker :container, :ls, "-a", *service_filter
   end
 
+  def list_container_names
+    [ *list_containers, "--format", "'{{ .Names }}'" ]
+  end
+
   def remove_container(version:)
     pipe \
       container_id_for(container_name: service_with_version(version)),
@@ -130,12 +135,4 @@ class Mrsk::Commands::App < Mrsk::Commands::Base
     def service_filter
       [ "--filter", "label=service=#{config.service}" ]
     end
-
-    def rails_master_key_arg
-      if master_key = config.master_key
-        [ "-e", redact("RAILS_MASTER_KEY=#{master_key}") ]
-      else
-        []
-      end
-    end
 end

lib/mrsk/commands/auditor.rb

@@ -0,0 +1,44 @@
+require "active_support/core_ext/time/conversions"
+
+class Mrsk::Commands::Auditor < Mrsk::Commands::Base
+  # Runs remotely
+  def record(line)
+    append \
+      [ :echo, tagged_line(line) ],
+      audit_log_file
+  end
+
+  # Runs locally
+  def broadcast(line)
+    if broadcast_cmd = config.audit_broadcast_cmd
+      pipe \
+        [ :echo, tagged_line(line) ],
+        broadcast_cmd
+    end
+  end
+
+  def reveal
+    [ :tail, "-n", 50, audit_log_file ]
+  end
+
+  private
+    def audit_log_file
+      "mrsk-#{config.service}-audit.log"
+    end
+
+    def tagged_line(line)
+      "'#{tags} #{line}'"
+    end
+
+    def tags
+      "[#{recorded_at}] [#{performer}]"
+    end
+
+    def performer
+      @performer ||= `whoami`.strip
+    end
+
+    def recorded_at
+      Time.now.to_fs(:db)
+    end
+end

lib/mrsk/commands/base.rb

@@ -2,14 +2,23 @@ module Mrsk::Commands
   class Base
     delegate :redact, to: Mrsk::Utils
 
+    MAX_LOG_SIZE = "10m"
+
     attr_accessor :config
 
     def initialize(config)
       @config = config
     end
 
-    def run_over_ssh(command, host:)
+    def run_over_ssh(*command, host:)
-      "ssh -t #{config.ssh_user}@#{host} '#{command}'"
+      "ssh".tap do |cmd|
+        cmd << " -J #{config.ssh_proxy.jump_proxies}" if config.ssh_proxy
+        cmd << " -t #{config.ssh_user}@#{host} '#{command.join(" ")}'"
+      end
+    end
+
+    def container_id_for(container_name:)
+      docker :container, :ls, "-a", "-f", "name=#{container_name}", "-q"
     end
 
     private
@@ -28,6 +37,10 @@ module Mrsk::Commands
         combine *commands, by: "|"
       end
 
+      def append(*commands)
+        combine *commands, by: ">>"
+      end
+
       def xargs(command)
         [ :xargs, command ].flatten
       end

lib/mrsk/commands/builder.rb

@@ -1,5 +1,3 @@
-require "mrsk/commands/base"
-
 class Mrsk::Commands::Builder < Mrsk::Commands::Base
   delegate :create, :remove, :push, :pull, :info, to: :target
 
@@ -36,8 +34,3 @@ class Mrsk::Commands::Builder < Mrsk::Commands::Base
     @multiarch_remote ||= Mrsk::Commands::Builder::Multiarch::Remote.new(config)
   end
 end
-
-require "mrsk/commands/builder/native"
-require "mrsk/commands/builder/native/remote"
-require "mrsk/commands/builder/multiarch"
-require "mrsk/commands/builder/multiarch/remote"

lib/mrsk/commands/builder/base.rb

@@ -1,5 +1,3 @@
-require "mrsk/commands/base"
-
 class Mrsk::Commands::Builder::Base < Mrsk::Commands::Base
   delegate :argumentize, to: Mrsk::Utils
 
@@ -7,6 +5,19 @@ class Mrsk::Commands::Builder::Base < Mrsk::Commands::Base
     docker :pull, config.absolute_image
   end
 
+  def build_options
+    [ *build_tags, *build_labels, *build_args, *build_secrets ]
+  end
+
+  private
+    def build_tags
+      [ "-t", config.absolute_image, "-t", config.latest_image ]
+    end
+
+    def build_labels
+      argumentize "--label", { service: config.service }
+    end
+
     def build_args
       argumentize "--build-arg", args, redacted: true
     end
@@ -15,7 +26,6 @@ class Mrsk::Commands::Builder::Base < Mrsk::Commands::Base
       argumentize "--secret", secrets.collect { |secret| [ "id", secret ] }
     end
 
-  private
     def args
       (config.builder && config.builder["args"]) || {}
     end

lib/mrsk/commands/builder/multiarch.rb

@@ -1,5 +1,3 @@
-require "mrsk/commands/builder/base"
-
 class Mrsk::Commands::Builder::Multiarch < Mrsk::Commands::Builder::Base
   def create
     docker :buildx, :create, "--use", "--name", builder_name
@@ -14,9 +12,7 @@ class Mrsk::Commands::Builder::Multiarch < Mrsk::Commands::Builder::Base
       "--push",
       "--platform", "linux/amd64,linux/arm64",
       "--builder", builder_name,
-      "-t", config.absolute_image,
+      *build_options,
-      *build_args,
-      *build_secrets,
       "."
   end
 

lib/mrsk/commands/builder/multiarch/remote.rb

@@ -1,5 +1,3 @@
-require "mrsk/commands/builder/multiarch"
-
 class Mrsk::Commands::Builder::Multiarch::Remote < Mrsk::Commands::Builder::Multiarch
   def create
     combine \

lib/mrsk/commands/builder/native.rb

@@ -1,5 +1,3 @@
-require "mrsk/commands/builder/base"
-
 class Mrsk::Commands::Builder::Native < Mrsk::Commands::Builder::Base
   def create
     # No-op on native
@@ -11,7 +9,7 @@ class Mrsk::Commands::Builder::Native < Mrsk::Commands::Builder::Base
 
   def push
     combine \
-      docker(:build, "-t", *build_args, *build_secrets, config.absolute_image, "."),
+      docker(:build, *build_options, "."),
       docker(:push, config.absolute_image)
   end
 

lib/mrsk/commands/builder/native/remote.rb

@@ -1,5 +1,3 @@
-require "mrsk/commands/builder/native"
-
 class Mrsk::Commands::Builder::Native::Remote < Mrsk::Commands::Builder::Native
   def create
     chain \
@@ -18,9 +16,7 @@ class Mrsk::Commands::Builder::Native::Remote < Mrsk::Commands::Builder::Native
       "--push",
       "--platform", platform,
       "--builder", builder_name,
-      "-t", config.absolute_image,
+      *build_options,
-      *build_args,
-      *build_secrets,
       "."
   end
 

lib/mrsk/commands/healthcheck.rb

@@ -0,0 +1,46 @@
+class Mrsk::Commands::Healthcheck < Mrsk::Commands::Base
+  EXPOSED_PORT = 3999
+
+  def run
+    web = config.role(:web)
+
+    docker :run,
+      "-d",
+      "--name", container_name_with_version,
+      "-p", "#{EXPOSED_PORT}:#{config.healthcheck["port"]}",
+      "--label", "service=#{container_name}",
+      *web.env_args,
+      *config.volume_args,
+      config.absolute_image,
+      web.cmd
+  end
+
+  def curl
+    [ :curl, "--silent", "--output", "/dev/null", "--write-out", "'%{http_code}'", health_url ]
+  end
+
+  def stop
+    pipe \
+      container_id_for(container_name: container_name),
+      xargs(docker(:stop))
+  end
+
+  def remove
+    pipe \
+      container_id_for(container_name: container_name),
+      xargs(docker(:container, :rm))
+  end
+
+  private
+    def container_name
+      "healthcheck-#{config.service}"
+    end
+
+    def container_name_with_version
+      "healthcheck-#{config.service_with_version}"
+    end
+
+    def health_url
+      "http://localhost:#{EXPOSED_PORT}#{config.healthcheck["path"]}"
+    end
+end

lib/mrsk/commands/prune.rb

@@ -1,17 +1,12 @@
-require "mrsk/commands/base"
 require "active_support/duration"
 require "active_support/core_ext/numeric/time"
 
 class Mrsk::Commands::Prune < Mrsk::Commands::Base
-  PRUNE_IMAGES_AFTER     = 30.days.in_hours.to_i
+  def images(until_hours: 7.days.in_hours.to_i)
-  PRUNE_CONTAINERS_AFTER =  3.days.in_hours.to_i
+    docker :image, :prune, "--all", "--force", "--filter", "label=service=#{config.service}", "--filter", "until=#{until_hours}h"
-
-  def images
-    docker :image, :prune, "-f", "--filter", "until=#{PRUNE_IMAGES_AFTER}h"
   end
 
-  def containers
+  def containers(until_hours: 3.days.in_hours.to_i)
-    docker :image, :prune, "-f", "--filter", "until=#{PRUNE_IMAGES_AFTER}h"
+    docker :container, :prune, "--force", "--filter", "label=service=#{config.service}", "--filter", "until=#{until_hours}h"
-    docker :container, :prune, "-f", "--filter", "label=service=#{config.service}", "--filter", "'until=#{PRUNE_CONTAINERS_AFTER}h'"
   end
 end

lib/mrsk/commands/registry.rb

@@ -1,5 +1,3 @@
-require "mrsk/commands/base"
-
 class Mrsk::Commands::Registry < Mrsk::Commands::Base
   delegate :registry, to: :config
 

lib/mrsk/commands/traefik.rb

@@ -1,10 +1,9 @@
-require "mrsk/commands/base"
-
 class Mrsk::Commands::Traefik < Mrsk::Commands::Base
   def run
     docker :run, "--name traefik",
       "-d",
-      "--restart unless-stopped",
+      "--restart", "unless-stopped",
+      "--log-opt", "max-size=#{MAX_LOG_SIZE}",
       "-p 80:80",
       "-v /var/run/docker.sock:/var/run/docker.sock",
       "traefik",

lib/mrsk/configuration.rb

@@ -3,7 +3,7 @@ require "active_support/core_ext/string/inquiry"
 require "active_support/core_ext/module/delegation"
 require "pathname"
 require "erb"
-require "mrsk/utils"
+require "net/ssh/proxy/jump"
 
 class Mrsk::Configuration
   delegate :service, :image, :servers, :env, :labels, :registry, :builder, to: :raw_config, allow_nil: true
@@ -82,6 +82,10 @@ class Mrsk::Configuration
     "#{repository}:#{version}"
   end
 
+  def latest_image
+    "#{repository}:latest"
+  end
+
   def service_with_version
     "#{service}-#{version}"
   end
@@ -103,18 +107,33 @@ class Mrsk::Configuration
     end
   end
 
+
   def ssh_user
-    raw_config.ssh_user || "root"
+    if raw_config.ssh.present?
+      raw_config.ssh["user"] || "root"
+    else
+      "root"
+    end
+  end
+
+  def ssh_proxy
+    if raw_config.ssh.present? && raw_config.ssh["proxy"]
+      Net::SSH::Proxy::Jump.new \
+        raw_config.ssh["proxy"].include?("@") ? raw_config.ssh["proxy"] : "root@#{raw_config.ssh["proxy"]}"
+    end
   end
 
   def ssh_options
-    { user: ssh_user, auth_methods: [ "publickey" ] }
+    { user: ssh_user, proxy: ssh_proxy, auth_methods: [ "publickey" ] }.compact
   end
 
-  def master_key
+
-    unless raw_config.skip_master_key
+  def audit_broadcast_cmd
-      ENV["RAILS_MASTER_KEY"] || File.read(Pathname.new(File.expand_path("config/master.key")))
+    raw_config.audit_broadcast_cmd
   end
+
+  def healthcheck
+    { "path" => "/up", "port" => 3000 }.merge(raw_config.healthcheck || {})
   end
 
 
@@ -136,7 +155,8 @@ class Mrsk::Configuration
       volume_args: volume_args,
       ssh_options: ssh_options,
       builder: raw_config.builder,
-      accessories: raw_config.accessories
+      accessories: raw_config.accessories,
+      healthcheck: healthcheck
     }.compact
   end
 
@@ -171,6 +191,3 @@ class Mrsk::Configuration
       raw_config.servers.is_a?(Array) ? [ "web" ] : raw_config.servers.keys.sort
     end
 end
-
-require "mrsk/configuration/role"
-require "mrsk/configuration/accessory"

lib/mrsk/configuration/role.rb

@@ -59,7 +59,7 @@ class Mrsk::Configuration::Role
       if running_traefik?
         {
           "traefik.http.routers.#{config.service}.rule" => "'PathPrefix(`/`)'",
-          "traefik.http.services.#{config.service}.loadbalancer.healthcheck.path" => "/up",
+          "traefik.http.services.#{config.service}.loadbalancer.healthcheck.path" => config.healthcheck["path"],
           "traefik.http.services.#{config.service}.loadbalancer.healthcheck.interval" => "1s",
           "traefik.http.middlewares.#{config.service}.retry.attempts" => "3",
           "traefik.http.middlewares.#{config.service}.retry.initialinterval" => "500ms"
@@ -96,7 +96,12 @@ class Mrsk::Configuration::Role
     def merged_env_with_secrets
       merged_env.tap do |new_env|
         new_env["secret"] = Array(config.env["secret"]) + Array(specialized_env["secret"])
-        new_env["clear"]  = (Array(config.env["clear"] || config.env) + Array(specialized_env["clear"] || specialized_env)).uniq
+
+        # If there's no secret/clear split, everything is clear
+        clear_app_env  = config.env["secret"] ? Array(config.env["clear"]) : Array(config.env["clear"] || config.env)
+        clear_role_env = specialized_env["secret"] ? Array(specialized_env["clear"]) : Array(specialized_env["clear"] || specialized_env)
+
+        new_env["clear"] = (clear_app_env + clear_role_env).uniq
       end
     end
 end

lib/mrsk/version.rb

@@ -1,3 +1,3 @@
 module Mrsk
-  VERSION = "0.5.0"
+  VERSION = "0.7.0"
 end

mrsk.gemspec

@@ -6,7 +6,7 @@ Gem::Specification.new do |spec|
   spec.authors     = [ "David Heinemeier Hansson" ]
   spec.email       = "dhh@hey.com"
   spec.homepage    = "https://github.com/rails/mrsk"
-  spec.summary     = "Deploy Rails apps in containers to servers running Docker with zero downtime."
+  spec.summary     = "Deploy web apps in containers to servers running Docker with zero downtime."
   spec.license     = "MIT"
 
   spec.files = Dir["lib/**/*", "MIT-LICENSE", "README.md"]
@@ -16,4 +16,5 @@ Gem::Specification.new do |spec|
   spec.add_dependency "sshkit", "~> 1.21"
   spec.add_dependency "thor", "~> 1.2"
   spec.add_dependency "dotenv", "~> 2.8"
+  spec.add_dependency "zeitwerk", "~> 2.5"
 end

test/cli/accessory_test.rb

@@ -14,7 +14,7 @@ class CliAccessoryTest < CliTestCase
   end
 
   test "boot" do
-    assert_match "Running docker run --name app-mysql -d --restart unless-stopped -p 3306:3306 -e [REDACTED] -e MYSQL_ROOT_HOST=% --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=app-mysql mysql:5.7 on 1.1.1.3", run_command("boot", "mysql")
+    assert_match "Running docker run --name app-mysql -d --restart unless-stopped --log-opt max-size=10m -p 3306:3306 -e [REDACTED] -e MYSQL_ROOT_HOST=% --volume $PWD/app-mysql/etc/mysql/my.cnf:/etc/mysql/my.cnf --volume $PWD/app-mysql/data:/var/lib/mysql --label service=app-mysql mysql:5.7 on 1.1.1.3", run_command("boot", "mysql")
   end
 
   test "exec" do

test/cli/cli_test_case.rb

@@ -1,6 +1,5 @@
 require "test_helper"
 require "active_support/testing/stream"
-require "mrsk/cli"
 
 class CliTestCase < ActiveSupport::TestCase
   include ActiveSupport::Testing::Stream

test/cli/main_test.rb

@@ -5,4 +5,29 @@ class CliMainTest < CliTestCase
     version = stdouted { Mrsk::Cli::Main.new.version }
     assert_equal Mrsk::VERSION, version
   end
+
+  test "rollback bad version" do
+    run_command("details") # Preheat MRSK const
+
+    run_command("rollback", "nonsense").tap do |output|
+      assert_match /docker container ls -a --filter label=service=app --format '{{ .Names }}'/, output
+      assert_match /The app version 'nonsense' is not available as a container/, output
+    end
+  end
+
+  test "rollback good version" do
+    Mrsk::Cli::Main.any_instance.stubs(:container_name_available?).returns(true)
+
+    run_command("rollback", "123").tap do |output|
+      assert_match /Stop current version, then start version 123/, output
+      assert_match /docker ps -q --filter label=service=app | xargs docker stop/, output
+      assert_match /docker start app-123/, output
+    end
+  end
+
+
+  private
+    def run_command(*command)
+      stdouted { Mrsk::Cli::Main.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
+    end
 end

test/commander_test.rb

@@ -1,5 +1,4 @@
 require "test_helper"
-require "mrsk/commander"
 
 class CommanderTest < ActiveSupport::TestCase
   setup do
@@ -10,6 +9,16 @@ class CommanderTest < ActiveSupport::TestCase
     assert_equal Mrsk::Configuration, @mrsk.config.class
   end
 
+  test "commit hash as version" do
+    assert_equal `git rev-parse HEAD`.strip, @mrsk.config.version
+  end
+
+  test "commit hash as version but not in git" do
+    @mrsk.expects(:system).with("git rev-parse").returns(nil)
+    error = assert_raises(RuntimeError) { @mrsk.config }
+    assert_match /no git repository found/, error.message
+  end
+
   test "overwriting hosts" do
     assert_equal [ "1.1.1.1", "1.1.1.2", "1.1.1.3", "1.1.1.4" ], @mrsk.hosts
 

test/commands/accessory_test.rb

@@ -1,6 +1,4 @@
 require "test_helper"
-require "mrsk/configuration"
-require "mrsk/commands/accessory"
 
 class CommandsAccessoryTest < ActiveSupport::TestCase
   setup do
@@ -51,46 +49,54 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
 
   test "run" do
     assert_equal \
-      [:docker, :run, "--name", "app-mysql", "-d", "--restart", "unless-stopped", "-p", "3306:3306", "-e", "MYSQL_ROOT_PASSWORD=secret123", "-e", "MYSQL_ROOT_HOST=%", "--label", "service=app-mysql", "mysql:8.0"], @mysql.run
+      "docker run --name app-mysql -d --restart unless-stopped --log-opt max-size=10m -p 3306:3306 -e MYSQL_ROOT_PASSWORD=secret123 -e MYSQL_ROOT_HOST=% --label service=app-mysql mysql:8.0",
+      @mysql.run.join(" ")
 
     assert_equal \
-      [:docker, :run, "--name", "app-redis", "-d", "--restart", "unless-stopped", "-p", "6379:6379", "-e", "SOMETHING=else", "--volume", "/var/lib/redis:/data", "--label", "service=app-redis", "--label", "cache=true", "redis:latest"], @redis.run
+      "docker run --name app-redis -d --restart unless-stopped --log-opt max-size=10m -p 6379:6379 -e SOMETHING=else --volume /var/lib/redis:/data --label service=app-redis --label cache=true redis:latest",
+      @redis.run.join(" ")
   end
 
   test "start" do
-    assert_equal [:docker, :container, :start, "app-mysql"], @mysql.start
+    assert_equal \
+      "docker container start app-mysql",
+      @mysql.start.join(" ")
   end
 
   test "stop" do
-    assert_equal [:docker, :container, :stop, "app-mysql"], @mysql.stop
+    assert_equal \
+      "docker container stop app-mysql",
+      @mysql.stop.join(" ")
   end
 
   test "info" do
-    assert_equal [:docker, :ps, "--filter", "label=service=app-mysql"], @mysql.info
+    assert_equal \
+      "docker ps --filter label=service=app-mysql",
+      @mysql.info.join(" ")
   end
 
 
   test "execute in new container" do
     assert_equal \
-      [ :docker, :run, "--rm", "-e", "MYSQL_ROOT_PASSWORD=secret123", "-e", "MYSQL_ROOT_HOST=%", "mysql:8.0", "mysql", "-u", "root" ],
+      "docker run --rm -e MYSQL_ROOT_PASSWORD=secret123 -e MYSQL_ROOT_HOST=% mysql:8.0 mysql -u root",
-      @mysql.execute_in_new_container("mysql", "-u", "root")
+      @mysql.execute_in_new_container("mysql", "-u", "root").join(" ")
   end
 
   test "execute in existing container" do
     assert_equal \
-      [ :docker, :exec, "app-mysql", "mysql", "-u", "root" ],
+      "docker exec app-mysql mysql -u root",
-      @mysql.execute_in_existing_container("mysql", "-u", "root")
+      @mysql.execute_in_existing_container("mysql", "-u", "root").join(" ")
   end
 
   test "execute in new container over ssh" do
-    @mysql.stub(:run_over_ssh, ->(cmd, host:) { cmd }) do
+    @mysql.stub(:run_over_ssh, ->(cmd) { cmd.join(" ") }) do
       assert_match %r|docker run -it --rm -e MYSQL_ROOT_PASSWORD=secret123 -e MYSQL_ROOT_HOST=% mysql:8.0 mysql -u root|,
         @mysql.execute_in_new_container_over_ssh("mysql", "-u", "root")
     end
   end
 
   test "execute in existing container over ssh" do
-    @mysql.stub(:run_over_ssh, ->(cmd, host:) { cmd }) do
+    @mysql.stub(:run_over_ssh, ->(cmd) { cmd.join(" ") }) do
       assert_match %r|docker exec -it app-mysql mysql -u root|,
         @mysql.execute_in_existing_container_over_ssh("mysql", "-u", "root")
     end
@@ -99,19 +105,30 @@ class CommandsAccessoryTest < ActiveSupport::TestCase
 
 
   test "logs" do
-    assert_equal [:docker, :logs, "app-mysql", "-t", "2>&1"], @mysql.logs
+    assert_equal \
-    assert_equal [:docker, :logs, "app-mysql", " --since 5m", " -n 100", "-t", "2>&1", "|", "grep 'thing'"], @mysql.logs(since: "5m", lines: 100, grep: "thing")
+      "docker logs app-mysql -t 2>&1",
+      @mysql.logs.join(" ")
+
+    assert_equal \
+      "docker logs app-mysql  --since 5m  -n 100 -t 2>&1 | grep 'thing'",
+      @mysql.logs(since: "5m", lines: 100, grep: "thing").join(" ")
   end
 
   test "follow logs" do
-    assert_equal "ssh -t root@1.1.1.5 'docker logs app-mysql -t -n 10 -f 2>&1'", @mysql.follow_logs
+    assert_equal \
+      "ssh -t root@1.1.1.5 'docker logs app-mysql -t -n 10 -f 2>&1'",
+      @mysql.follow_logs
   end
 
   test "remove container" do
-    assert_equal [:docker, :container, :prune, "-f", "--filter", "label=service=app-mysql"], @mysql.remove_container
+    assert_equal \
+      "docker container prune -f --filter label=service=app-mysql",
+      @mysql.remove_container.join(" ")
   end
 
   test "remove image" do
-    assert_equal [:docker, :image, :prune, "-a", "-f", "--filter", "label=service=app-mysql"], @mysql.remove_image
+    assert_equal \
+      "docker image prune -a -f --filter label=service=app-mysql",
+      @mysql.remove_image.join(" ")
   end
 end

test/commands/app_test.rb

@@ -1,63 +1,169 @@
 require "test_helper"
-require "mrsk/configuration"
-require "mrsk/commands/app"
 
 class CommandsAppTest < ActiveSupport::TestCase
   setup do
     ENV["RAILS_MASTER_KEY"] = "456"
 
-    @config = { service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ] }
+    @config = { service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ], env: { "secret" => [ "RAILS_MASTER_KEY" ] } }
-    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config)
+    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config).tap { |c| c.version = "999" }
   end
 
   teardown do
-    ENV["RAILS_MASTER_KEY"] = nil
+    ENV.delete("RAILS_MASTER_KEY")
   end
 
   test "run" do
     assert_equal \
-      [:docker, :run, "-d", "--restart unless-stopped", "--name", "app-missing", "-e", "RAILS_MASTER_KEY=456", "--label", "service=app", "--label", "role=web", "--label", "traefik.http.routers.app.rule='PathPrefix(`/`)'", "--label", "traefik.http.services.app.loadbalancer.healthcheck.path=/up", "--label", "traefik.http.services.app.loadbalancer.healthcheck.interval=1s", "--label", "traefik.http.middlewares.app.retry.attempts=3", "--label", "traefik.http.middlewares.app.retry.initialinterval=500ms", "dhh/app:missing"], @app.run
+      "docker run -d --restart unless-stopped --log-opt max-size=10m --name app-999 -e RAILS_MASTER_KEY=456 --label service=app --label role=web --label traefik.http.routers.app.rule='PathPrefix(`/`)' --label traefik.http.services.app.loadbalancer.healthcheck.path=/up --label traefik.http.services.app.loadbalancer.healthcheck.interval=1s --label traefik.http.middlewares.app.retry.attempts=3 --label traefik.http.middlewares.app.retry.initialinterval=500ms dhh/app:999",
+      @app.run.join(" ")
   end
 
   test "run with volumes" do
     @config[:volumes] = ["/local/path:/container/path" ]
 
     assert_equal \
-      [:docker, :run, "-d", "--restart unless-stopped", "--name", "app-missing", "-e", "RAILS_MASTER_KEY=456", "--volume", "/local/path:/container/path", "--label", "service=app", "--label", "role=web", "--label", "traefik.http.routers.app.rule='PathPrefix(`/`)'", "--label", "traefik.http.services.app.loadbalancer.healthcheck.path=/up", "--label", "traefik.http.services.app.loadbalancer.healthcheck.interval=1s", "--label", "traefik.http.middlewares.app.retry.attempts=3", "--label", "traefik.http.middlewares.app.retry.initialinterval=500ms", "dhh/app:missing"], @app.run
+      "docker run -d --restart unless-stopped --log-opt max-size=10m --name app-999 -e RAILS_MASTER_KEY=456 --volume /local/path:/container/path --label service=app --label role=web --label traefik.http.routers.app.rule='PathPrefix(`/`)' --label traefik.http.services.app.loadbalancer.healthcheck.path=/up --label traefik.http.services.app.loadbalancer.healthcheck.interval=1s --label traefik.http.middlewares.app.retry.attempts=3 --label traefik.http.middlewares.app.retry.initialinterval=500ms dhh/app:999",
+      @app.run.join(" ")
+  end
+
+  test "run with custom healthcheck path" do
+    @config[:healthcheck] = { "path" => "/healthz" }
+
+    assert_equal \
+      "docker run -d --restart unless-stopped --log-opt max-size=10m --name app-999 -e RAILS_MASTER_KEY=456 --label service=app --label role=web --label traefik.http.routers.app.rule='PathPrefix(`/`)' --label traefik.http.services.app.loadbalancer.healthcheck.path=/healthz --label traefik.http.services.app.loadbalancer.healthcheck.interval=1s --label traefik.http.middlewares.app.retry.attempts=3 --label traefik.http.middlewares.app.retry.initialinterval=500ms dhh/app:999",
+      @app.run.join(" ")
+  end
+
+  test "start" do
+    assert_equal \
+      "docker start app-999",
+      @app.start.join(" ")
+  end
+
+  test "stop" do
+    assert_equal \
+      "docker ps -q --filter label=service=app | xargs docker stop",
+      @app.stop.join(" ")
+  end
+
+  test "info" do
+    assert_equal \
+      "docker ps --filter label=service=app",
+      @app.info.join(" ")
+  end
+
+
+  test "logs" do
+    assert_equal \
+      "docker ps -q --filter label=service=app | xargs docker logs 2>&1",
+      @app.logs.join(" ")
+
+    assert_equal \
+      "docker ps -q --filter label=service=app | xargs docker logs --since 5m 2>&1",
+      @app.logs(since: "5m").join(" ")
+
+    assert_equal \
+      "docker ps -q --filter label=service=app | xargs docker logs -n 100 2>&1",
+      @app.logs(lines: "100").join(" ")
+
+    assert_equal \
+      "docker ps -q --filter label=service=app | xargs docker logs --since 5m -n 100 2>&1",
+      @app.logs(since: "5m", lines: "100").join(" ")
+
+    assert_equal \
+      "docker ps -q --filter label=service=app | xargs docker logs 2>&1 | grep 'my-id'",
+      @app.logs(grep: "my-id").join(" ")
+
+    assert_equal \
+      "docker ps -q --filter label=service=app | xargs docker logs --since 5m 2>&1 | grep 'my-id'",
+      @app.logs(since: "5m", grep: "my-id").join(" ")
+  end
+
+  test "follow logs" do
+    @app.stub(:run_over_ssh, ->(cmd, host:) { cmd.join(" ") }) do
+      assert_equal \
+        "docker ps -q --filter label=service=app | xargs docker logs -t -n 10 -f 2>&1",
+        @app.follow_logs(host: "app-1")
+
+      assert_equal \
+        "docker ps -q --filter label=service=app | xargs docker logs -t -n 10 -f 2>&1 | grep \"Completed\"",
+        @app.follow_logs(host: "app-1", grep: "Completed")
+    end
   end
 
 
   test "execute in new container" do
     assert_equal \
-      [ :docker, :run, "--rm", "-e", "RAILS_MASTER_KEY=456", "dhh/app:missing", "bin/rails", "db:setup" ],
+      "docker run --rm -e RAILS_MASTER_KEY=456 dhh/app:999 bin/rails db:setup",
-      @app.execute_in_new_container("bin/rails", "db:setup")
+      @app.execute_in_new_container("bin/rails", "db:setup").join(" ")
   end
 
   test "execute in existing container" do
     assert_equal \
-      [ :docker, :exec, "app-missing", "bin/rails", "db:setup" ],
+      "docker exec app-999 bin/rails db:setup",
-      @app.execute_in_existing_container("bin/rails", "db:setup")
+      @app.execute_in_existing_container("bin/rails", "db:setup").join(" ")
   end
 
   test "execute in new container over ssh" do
-    @app.stub(:run_over_ssh, ->(cmd, host:) { cmd }) do
+    @app.stub(:run_over_ssh, ->(cmd, host:) { cmd.join(" ") }) do
-      assert_match %r|docker run -it --rm -e RAILS_MASTER_KEY=456 dhh/app:missing bin/rails c|,
+      assert_match %r|docker run -it --rm -e RAILS_MASTER_KEY=456 dhh/app:999 bin/rails c|,
         @app.execute_in_new_container_over_ssh("bin/rails", "c", host: "app-1")
     end
   end
 
   test "execute in existing container over ssh" do
-    @app.stub(:run_over_ssh, ->(cmd, host:) { cmd }) do
+    @app.stub(:run_over_ssh, ->(cmd, host:) { cmd.join(" ") }) do
-      assert_match %r|docker exec -it app-missing bin/rails c|,
+      assert_match %r|docker exec -it app-999 bin/rails c|,
         @app.execute_in_existing_container_over_ssh("bin/rails", "c", host: "app-1")
     end
   end
 
+  test "run over ssh" do
+    assert_equal "ssh -t root@1.1.1.1 'ls'", @app.run_over_ssh("ls", host: "1.1.1.1")
+  end
 
-  test "run without master key" do
+  test "run over ssh with custom user" do
-    ENV["RAILS_MASTER_KEY"] = nil
+    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config.tap { |c| c[:ssh] = { "user" => "app" } })
-    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config.tap { |c| c[:skip_master_key] = true })
+    assert_equal "ssh -t app@1.1.1.1 'ls'", @app.run_over_ssh("ls", host: "1.1.1.1")
+  end
 
-    assert @app.run.exclude?("RAILS_MASTER_KEY=456")
+  test "run over ssh with proxy" do
+    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config.tap { |c| c[:ssh] = { "proxy" => "2.2.2.2" } })
+    assert_equal "ssh -J root@2.2.2.2 -t root@1.1.1.1 'ls'", @app.run_over_ssh("ls", host: "1.1.1.1")
+  end
+
+  test "run over ssh with proxy user" do
+    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config.tap { |c| c[:ssh] = { "proxy" => "app@2.2.2.2" } })
+    assert_equal "ssh -J app@2.2.2.2 -t root@1.1.1.1 'ls'", @app.run_over_ssh("ls", host: "1.1.1.1")
+  end
+
+  test "run over ssh with custom user with proxy" do
+    @app = Mrsk::Commands::App.new Mrsk::Configuration.new(@config.tap { |c| c[:ssh] = { "user" => "app", "proxy" => "2.2.2.2" } })
+    assert_equal "ssh -J root@2.2.2.2 -t app@1.1.1.1 'ls'", @app.run_over_ssh("ls", host: "1.1.1.1")
+  end
+
+
+  test "current_container_id" do
+    assert_equal \
+      "docker ps -q --filter label=service=app",
+      @app.current_container_id.join(" ")
+  end
+
+  test "container_id_for" do
+    assert_equal \
+      "docker container ls -a -f name=app-999 -q",
+      @app.container_id_for(container_name: "app-999").join(" ")
+  end
+
+  test "current_running_version" do
+    assert_equal \
+      "docker ps --filter label=service=app --format \"{{.Names}}\" | sed 's/-/\\n/g' | tail -n 1",
+      @app.current_running_version.join(" ")
+  end
+
+  test "most_recent_version_from_available_images" do
+    assert_equal \
+      "docker image ls --format \"{{.Tag}}\" dhh/app | head -n 1",
+      @app.most_recent_version_from_available_images.join(" ")
   end
 end

test/commands/auditor_test.rb

@@ -0,0 +1,27 @@
+require "test_helper"
+
+class CommandsAuditorTest < ActiveSupport::TestCase
+  setup do
+    @config = {
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
+      audit_broadcast_cmd: "bin/audit_broadcast"
+    }
+  end
+
+  test "record" do
+    assert_match \
+      /echo '.* app removed container' >> mrsk-app-audit.log/,
+      new_command.record("app removed container").join(" ")
+  end
+
+  test "broadcast" do
+    assert_match \
+      /echo '.* app removed container' \| bin\/audit_broadcast/,
+      new_command.broadcast("app removed container").join(" ")
+  end
+
+  private
+    def new_command
+      Mrsk::Commands::Auditor.new(Mrsk::Configuration.new(@config, version: "123"))
+    end
+end

test/commands/builder_test.rb

@@ -1,6 +1,4 @@
 require "test_helper"
-require "mrsk/configuration"
-require "mrsk/commands/builder"
 
 class CommandsBuilderTest < ActiveSupport::TestCase
   setup do
@@ -10,50 +8,68 @@ class CommandsBuilderTest < ActiveSupport::TestCase
   test "target multiarch by default" do
     builder = new_builder_command
     assert_equal "multiarch", builder.name
-    assert_equal [:docker, :buildx, :build, "--push", "--platform", "linux/amd64,linux/arm64", "--builder", "mrsk-app-multiarch", "-t", "dhh/app:123", "."], builder.push
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder mrsk-app-multiarch -t dhh/app:123 -t dhh/app:latest --label service=app .",
+      builder.push.join(" ")
   end
 
   test "target native when multiarch is off" do
     builder = new_builder_command(builder: { "multiarch" => false })
     assert_equal "native", builder.name
-    assert_equal [:docker, :build, "-t", "dhh/app:123", ".", "&&", :docker, :push, "dhh/app:123"], builder.push
+    assert_equal \
+      "docker build -t dhh/app:123 -t dhh/app:latest --label service=app . && docker push dhh/app:123",
+      builder.push.join(" ")
   end
 
   test "target multiarch remote when local and remote is set" do
     builder = new_builder_command(builder: { "local" => { }, "remote" => { } })
     assert_equal "multiarch/remote", builder.name
-    assert_equal [:docker, :buildx, :build, "--push", "--platform", "linux/amd64,linux/arm64", "--builder", "mrsk-app-multiarch-remote", "-t", "dhh/app:123", "."], builder.push
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder mrsk-app-multiarch-remote -t dhh/app:123 -t dhh/app:latest --label service=app .",
+      builder.push.join(" ")
   end
 
   test "target native remote when only remote is set" do
     builder = new_builder_command(builder: { "remote" => { "arch" => "amd64" } })
     assert_equal "native/remote", builder.name
-    assert_equal [:docker, :buildx, :build, "--push", "--platform", "linux/amd64", "--builder", "mrsk-app-native-remote", "-t", "dhh/app:123", "."], builder.push
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64 --builder mrsk-app-native-remote -t dhh/app:123 -t dhh/app:latest --label service=app .",
+      builder.push.join(" ")
   end
 
   test "build args" do
     builder = new_builder_command(builder: { "args" => { "a" => 1, "b" => 2 } })
-    assert_equal [ "--build-arg", "a=1", "--build-arg", "b=2" ], builder.target.build_args
+    assert_equal \
+      "-t dhh/app:123 -t dhh/app:latest --label service=app --build-arg a=1 --build-arg b=2",
+      builder.target.build_options.join(" ")
   end
 
   test "build secrets" do
     builder = new_builder_command(builder: { "secrets" => ["token_a", "token_b"] })
-    assert_equal [ "--secret", "id=token_a", "--secret", "id=token_b" ], builder.target.build_secrets
+    assert_equal \
+      "-t dhh/app:123 -t dhh/app:latest --label service=app --secret id=token_a --secret id=token_b",
+      builder.target.build_options.join(" ")
   end
 
   test "native push with build args" do
     builder = new_builder_command(builder: { "multiarch" => false, "args" => { "a" => 1, "b" => 2 } })
-    assert_equal [ :docker, :build, "-t", "--build-arg", "a=1", "--build-arg", "b=2", "dhh/app:123", ".", "&&", :docker, :push, "dhh/app:123" ], builder.push
+    assert_equal \
+      "docker build -t dhh/app:123 -t dhh/app:latest --label service=app --build-arg a=1 --build-arg b=2 . && docker push dhh/app:123",
+      builder.push.join(" ")
   end
 
   test "multiarch push with build args" do
     builder = new_builder_command(builder: { "args" => { "a" => 1, "b" => 2 } })
-    assert_equal [ :docker, :buildx, :build, "--push", "--platform", "linux/amd64,linux/arm64", "--builder", "mrsk-app-multiarch", "-t", "dhh/app:123", "--build-arg", "a=1", "--build-arg", "b=2", "." ], builder.push
+    assert_equal \
+      "docker buildx build --push --platform linux/amd64,linux/arm64 --builder mrsk-app-multiarch -t dhh/app:123 -t dhh/app:latest --label service=app --build-arg a=1 --build-arg b=2 .",
+      builder.push.join(" ")
   end
 
   test "native push with with build secrets" do
     builder = new_builder_command(builder: { "multiarch" => false, "secrets" => [ "a", "b" ] })
-    assert_equal [ :docker, :build, "-t", "--secret", "id=a", "--secret", "id=b", "dhh/app:123", ".", "&&", :docker, :push, "dhh/app:123" ], builder.push
+    assert_equal \
+      "docker build -t dhh/app:123 -t dhh/app:latest --label service=app --secret id=a --secret id=b . && docker push dhh/app:123",
+      builder.push.join(" ")
   end
 
   private

test/commands/healthcheck_test.rb

@@ -0,0 +1,55 @@
+require "test_helper"
+
+class CommandsHealthcheckTest < ActiveSupport::TestCase
+  setup do
+    @config = {
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
+      traefik: { "args" => { "accesslog.format" => "json", "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
+    }
+  end
+
+  test "run" do
+    assert_equal \
+      "docker run -d --name healthcheck-app-123 -p 3999:3000 --label service=healthcheck-app dhh/app:123",
+      new_command.run.join(" ")
+  end
+
+  test "run with custom port" do
+    @config[:healthcheck] = { "port" => 3001 }
+
+    assert_equal \
+      "docker run -d --name healthcheck-app-123 -p 3999:3001 --label service=healthcheck-app dhh/app:123",
+      new_command.run.join(" ")
+  end
+
+  test "curl" do
+    assert_equal \
+      "curl --silent --output /dev/null --write-out '%{http_code}' http://localhost:3999/up",
+      new_command.curl.join(" ")
+  end
+
+  test "curl with custom path" do
+    @config[:healthcheck] = { "path" => "/healthz" }
+
+    assert_equal \
+      "curl --silent --output /dev/null --write-out '%{http_code}' http://localhost:3999/healthz",
+      new_command.curl.join(" ")
+  end
+
+  test "stop" do
+    assert_equal \
+      "docker container ls -a -f name=healthcheck-app -q | xargs docker stop",
+      new_command.stop.join(" ")
+  end
+
+  test "remove" do
+    assert_equal \
+      "docker container ls -a -f name=healthcheck-app -q | xargs docker container rm",
+      new_command.remove.join(" ")
+  end
+
+  private
+    def new_command
+      Mrsk::Commands::Healthcheck.new(Mrsk::Configuration.new(@config, version: "123"))
+    end
+end

test/commands/prune_test.rb

@@ -0,0 +1,27 @@
+require "test_helper"
+
+class CommandsPruneTest < ActiveSupport::TestCase
+  setup do
+    @config = {
+      service: "app", image: "dhh/app", registry: { "username" => "dhh", "password" => "secret" }, servers: [ "1.1.1.1" ],
+      traefik: { "args" => { "accesslog.format" => "json", "metrics.prometheus.buckets" => "0.1,0.3,1.2,5.0" } }
+    }
+  end
+
+  test "images" do
+    assert_equal \
+      "docker image prune --all --force --filter label=service=app --filter until=168h",
+      new_command.images.join(" ")
+  end
+
+  test "containers" do
+    assert_equal \
+      "docker container prune --force --filter label=service=app --filter until=72h",
+      new_command.containers.join(" ")
+  end
+
+  private
+    def new_command
+      Mrsk::Commands::Prune.new(Mrsk::Configuration.new(@config, version: "123"))
+    end
+end

test/commands/registry_test.rb

@@ -1,6 +1,4 @@
 require "test_helper"
-require "mrsk/configuration"
-require "mrsk/commands/registry"
 
 class CommandsRegistryTest < ActiveSupport::TestCase
   setup do

test/commands/traefik_test.rb

@@ -1,6 +1,4 @@
 require "test_helper"
-require "mrsk/configuration"
-require "mrsk/commands/traefik"
 
 class CommandsTraefikTest < ActiveSupport::TestCase
   setup do
@@ -12,63 +10,74 @@ class CommandsTraefikTest < ActiveSupport::TestCase
 
   test "run" do
     assert_equal \
-      [:docker, :run, "--name traefik", "-d", "--restart unless-stopped", "-p 80:80", "-v /var/run/docker.sock:/var/run/docker.sock", "traefik", "--providers.docker", "--log.level=DEBUG", "--accesslog.format", "json", "--metrics.prometheus.buckets", "0.1,0.3,1.2,5.0"],
+      "docker run --name traefik -d --restart unless-stopped --log-opt max-size=10m -p 80:80 -v /var/run/docker.sock:/var/run/docker.sock traefik --providers.docker --log.level=DEBUG --accesslog.format json --metrics.prometheus.buckets 0.1,0.3,1.2,5.0",
-      new_command.run
+      new_command.run.join(" ")
   end
 
   test "traefik start" do
     assert_equal \
-      [:docker, :container, :start, 'traefik'], new_command.start
+      "docker container start traefik",
+      new_command.start.join(" ")
   end
 
   test "traefik stop" do
     assert_equal \
-      [:docker, :container, :stop, 'traefik'], new_command.stop
+      "docker container stop traefik",
+      new_command.stop.join(" ")
   end
 
   test "traefik info" do
     assert_equal \
-      [:docker, :ps, '--filter', 'name=traefik'], new_command.info
+      "docker ps --filter name=traefik",
+      new_command.info.join(" ")
   end
 
   test "traefik logs" do
     assert_equal \
-      [:docker, :logs, 'traefik', '-t', '2>&1'], new_command.logs
+      "docker logs traefik -t 2>&1",
+      new_command.logs.join(" ")
   end
 
   test "traefik logs since 2h" do
     assert_equal \
-      [:docker, :logs, 'traefik', ' --since 2h', '-t', '2>&1'], new_command.logs(since: '2h')
+      "docker logs traefik  --since 2h -t 2>&1",
+      new_command.logs(since: '2h').join(" ")
   end
 
   test "traefik logs last 10 lines" do
     assert_equal \
-      [:docker, :logs, 'traefik', ' -n 10', '-t', '2>&1'], new_command.logs(lines: 10)
+      "docker logs traefik  -n 10 -t 2>&1",
+      new_command.logs(lines: 10).join(" ")
   end
 
   test "traefik logs with grep hello!" do
     assert_equal \
-      [:docker, :logs, 'traefik', '-t', '2>&1', "|", "grep 'hello!'"], new_command.logs(grep: 'hello!')
+      "docker logs traefik -t 2>&1 | grep 'hello!'",
+      new_command.logs(grep: 'hello!').join(" ")
   end
 
   test "traefik remove container" do
     assert_equal \
-      [:docker, :container, :prune, "-f", "--filter", "label=org.opencontainers.image.title=Traefik"], new_command.remove_container
+      "docker container prune -f --filter label=org.opencontainers.image.title=Traefik",
+      new_command.remove_container.join(" ")
   end
 
   test "traefik remove image" do
     assert_equal \
-    [:docker, :image, :prune, "-a", "-f", "--filter", "label=org.opencontainers.image.title=Traefik"], new_command.remove_image
+      "docker image prune -a -f --filter label=org.opencontainers.image.title=Traefik",
+      new_command.remove_image.join(" ")
   end
 
   test "traefik follow logs" do
     assert_equal \
-    "ssh -t root@1.1.1.1 'docker logs traefik -t -n 10 -f 2>&1'", new_command.follow_logs(host: @config[:servers].first)
+      "ssh -t root@1.1.1.1 'docker logs traefik -t -n 10 -f 2>&1'",
+      new_command.follow_logs(host: @config[:servers].first)
   end
 
   test "traefik follow logs with grep hello!" do
     assert_equal \
-    "ssh -t root@1.1.1.1 'docker logs traefik -t -n 10 -f 2>&1 | grep \"hello!\"'", new_command.follow_logs(host: @config[:servers].first, grep: 'hello!')
+      "ssh -t root@1.1.1.1 'docker logs traefik -t -n 10 -f 2>&1 | grep \"hello!\"'",
+      new_command.follow_logs(host: @config[:servers].first, grep: 'hello!')
   end
 
   private

test/configuration/accessory_test.rb

@@ -1,5 +1,4 @@
 require "test_helper"
-require "mrsk/configuration"
 
 class ConfigurationAccessoryTest < ActiveSupport::TestCase
   setup do

test/configuration/role_test.rb

@@ -1,5 +1,4 @@
 require "test_helper"
-require "mrsk/configuration"
 
 class ConfigurationRoleTest < ActiveSupport::TestCase
   setup do

test/configuration_test.rb

@@ -1,5 +1,4 @@
 require "test_helper"
-require "mrsk/configuration"
 
 class ConfigurationTest < ActiveSupport::TestCase
   setup do
@@ -140,17 +139,18 @@ class ConfigurationTest < ActiveSupport::TestCase
   test "ssh options" do
     assert_equal "root", @config.ssh_options[:user]
 
-    config = Mrsk::Configuration.new(@deploy.tap { |c| c[:ssh_user] = "app" })
+    config = Mrsk::Configuration.new(@deploy.tap { |c| c.merge!(ssh: { "user" => "app" }) })
     assert_equal "app", @config.ssh_options[:user]
   end
 
-  test "master key" do
+  test "ssh options with proxy host" do
-    assert_equal "456", @config.master_key
+    config = Mrsk::Configuration.new(@deploy.tap { |c| c.merge!(ssh: { "proxy" => "1.2.3.4" }) })
+    assert_equal "root@1.2.3.4", @config.ssh_options[:proxy].jump_proxies
   end
 
-  test "skip master key" do
+  test "ssh options with proxy host and user" do
-    config = Mrsk::Configuration.new(@deploy.tap { |c| c[:skip_master_key] = true })
+    config = Mrsk::Configuration.new(@deploy.tap { |c| c.merge!(ssh: { "proxy" => "app@1.2.3.4" }) })
-    assert_nil @config.master_key
+    assert_equal "app@1.2.3.4", @config.ssh_options[:proxy].jump_proxies
   end
 
   test "volume_args" do

test/test_helper.rb

@@ -5,6 +5,7 @@ require "debug"
 require "mocha/minitest" # using #stubs that can alter returns
 require "minitest/autorun" # using #stub that take args
 require "sshkit"
+require "mrsk"
 
 ActiveSupport::LogSubscriber.logger = ActiveSupport::Logger.new(STDOUT) if ENV["VERBOSE"]