Merge pull request #208 from tannakartikey/add_labels_to_traefik

Labels can be added to Traefik

README.md

@@ -514,6 +514,21 @@ traefik:
 
 This starts the Traefik container with `--volume /tmp/example.json:/tmp/example.json --publish 8080:8080 --memory 512m` arguments to `docker run`.
 
+### Traefik container lables
+
+Add labels to Traefik Docker container.
+
+```yaml
+traefik:
+  lables:
+    - traefik.enable: true
+    - traefik.http.routers.dashboard.rule: Host(`traefik.example.com`) && (PathPrefix(`/api`) || PathPrefix(`/dashboard`))
+    - traefik.http.routers.dashboard.service: api@internal
+    - traefik.http.routers.dashboard.middlewares: auth
+    - traefik.http.middlewares.auth.basicauth.users: test:$2y$05$H2o72tMaO.TwY1wNQUV1K.fhjRgLHRDWohFvUZOJHBEtUXNKrqUKi # test:password
+```
+
+This labels Traefik container with `--label traefik.http.routers.dashboard.middlewares=\"auth\"` and so on.
 
 ### Traefik alternate entrypoints
 

lib/mrsk/commands/traefik.rb

@@ -1,5 +1,5 @@
 class Mrsk::Commands::Traefik < Mrsk::Commands::Base
-  delegate :optionize, to: Mrsk::Utils
+  delegate :argumentize, :optionize, to: Mrsk::Utils
 
   DEFAULT_IMAGE = "traefik:v2.9"
   CONTAINER_PORT = 80
@@ -11,6 +11,7 @@ class Mrsk::Commands::Traefik < Mrsk::Commands::Base
       "--publish", port,
       "--volume", "/var/run/docker.sock:/var/run/docker.sock",
       *config.logging_args,
+      *label_args,
       *docker_options_args,
       image,
       "--providers.docker",
@@ -56,6 +57,14 @@ class Mrsk::Commands::Traefik < Mrsk::Commands::Base
   end
 
   private
+    def label_args
+      argumentize "--label", labels
+    end
+
+    def labels
+      config.traefik["labels"] || []
+    end
+
     def image
       config.traefik.fetch("image") { DEFAULT_IMAGE }
     end

test/commands/traefik_test.rb

@@ -54,6 +54,17 @@ class CommandsTraefikTest < ActiveSupport::TestCase
       new_command.run.join(" ")
   end
 
+  test "run with labels configured" do
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" #{@image} --providers.docker --log.level=DEBUG --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
+
+    @config[:traefik]["labels"] = { "traefik.http.routers.dashboard.service" => "api@internal", "traefik.http.routers.dashboard.middlewares" => "auth" }
+    assert_equal \
+      "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --log-opt max-size=\"10m\" --label traefik.http.routers.dashboard.service=\"api@internal\" --label traefik.http.routers.dashboard.middlewares=\"auth\" #{@image} --providers.docker --log.level=DEBUG --accesslog.format=\"json\" --api.insecure --metrics.prometheus.buckets=\"0.1,0.3,1.2,5.0\"",
+      new_command.run.join(" ")
+  end
+
   test "run without configuration" do
     @config.delete(:traefik)