8a41d15b69
When replacing a container currently we:
1. Boot the new container
2. Wait for it to become healthy
3. Stop the old container
Traefik will send requests to the old container until it notices that it
is unhealthy. But it may have stopped serving requests before that point
which can result in errors.
To get round that the new boot process is:
1. Create a directory with a single file on the host
2. Boot the new container, mounting the cord file into /tmp and
including a check for the file in the docker healthcheck
3. Wait for it to become healthy
4. Delete the healthcheck file ("cut the cord") for the old container
5. Wait for it to become unhealthy and give Traefik a couple of seconds
to notice
6. Stop the old container
The extra steps ensure that Traefik stops sending requests before the
old container is shutdown.
97 lines
3.3 KiB
Ruby
97 lines
3.3 KiB
Ruby
require_relative "cli_test_case"
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class CliTraefikTest < CliTestCase
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test "boot" do
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run_command("boot").tap do |output|
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assert_match "docker login", output
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assert_match "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" #{Kamal::Commands::Traefik::DEFAULT_IMAGE} --providers.docker --log.level=\"DEBUG\"", output
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end
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end
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test "reboot" do
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Kamal::Commands::Registry.any_instance.expects(:login).twice
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run_command("reboot").tap do |output|
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assert_match "docker container stop traefik", output
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assert_match "docker container prune --force --filter label=org.opencontainers.image.title=Traefik", output
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assert_match "docker run --name traefik --detach --restart unless-stopped --publish 80:80 --volume /var/run/docker.sock:/var/run/docker.sock --env-file .kamal/env/traefik/traefik.env --log-opt max-size=\"10m\" #{Kamal::Commands::Traefik::DEFAULT_IMAGE} --providers.docker --log.level=\"DEBUG\"", output
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end
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end
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test "reboot --rolling" do
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Object.any_instance.stubs(:sleep)
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run_command("reboot", "--rolling").tap do |output|
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assert_match "Running docker container prune --force --filter label=org.opencontainers.image.title=Traefik on 1.1.1.1", output
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end
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end
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test "start" do
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run_command("start").tap do |output|
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assert_match "docker container start traefik", output
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end
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end
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test "stop" do
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run_command("stop").tap do |output|
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assert_match "docker container stop traefik", output
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end
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end
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test "restart" do
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Kamal::Cli::Traefik.any_instance.expects(:stop)
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Kamal::Cli::Traefik.any_instance.expects(:start)
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run_command("restart")
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end
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test "details" do
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run_command("details").tap do |output|
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assert_match "docker ps --filter name=^traefik$", output
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end
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end
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test "logs" do
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SSHKit::Backend::Abstract.any_instance.stubs(:capture)
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.with(:docker, :logs, "traefik", " --tail 100", "--timestamps", "2>&1")
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.returns("Log entry")
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run_command("logs").tap do |output|
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assert_match "Traefik Host: 1.1.1.1", output
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assert_match "Log entry", output
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end
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end
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test "logs with follow" do
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SSHKit::Backend::Abstract.any_instance.stubs(:exec)
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.with("ssh -t root@1.1.1.1 'docker logs traefik --timestamps --tail 10 --follow 2>&1'")
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assert_match "docker logs traefik --timestamps --tail 10 --follow", run_command("logs", "--follow")
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end
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test "remove" do
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Kamal::Cli::Traefik.any_instance.expects(:stop)
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Kamal::Cli::Traefik.any_instance.expects(:remove_container)
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Kamal::Cli::Traefik.any_instance.expects(:remove_image)
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run_command("remove")
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end
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test "remove_container" do
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run_command("remove_container").tap do |output|
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assert_match "docker container prune --force --filter label=org.opencontainers.image.title=Traefik", output
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end
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end
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test "remove_image" do
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run_command("remove_image").tap do |output|
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assert_match "docker image prune --all --force --filter label=org.opencontainers.image.title=Traefik", output
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end
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end
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private
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def run_command(*command)
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stdouted { Kamal::Cli::Traefik.start([*command, "-c", "test/fixtures/deploy_with_accessories.yml"]) }
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end
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end
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