Class: Kamal::Commands::Prune

Inherits:
Base
  • Object
show all
Defined in:
lib/kamal/commands/prune.rb

Constant Summary

Constants inherited from Base

Base::DOCKER_HEALTH_STATUS_FORMAT, Base::NO_HEALTHCHECK

Instance Attribute Summary

Attributes inherited from Base

#config

Instance Method Summary collapse

Methods inherited from Base

#container_id_for, #ensure_docker_installed, #initialize, #make_directory, #make_directory_for, #read_file, #remove_directory, #remove_file, #run_over_ssh

Constructor Details

This class inherits a constructor from Kamal::Commands::Base

Instance Method Details

#app_containers(retain:, role:) ⇒ Object

Scoped to one role so a busy sibling role cannot push another role's newest container past the retain window. That matters beyond disk hygiene: a container kamal-proxy has put to sleep is exited, so it is a removal candidate, and once it is gone every wake 404s. With retain >= 1 a role's newest container always survives, and the slept one is always the newest — sleeping happens to the current release.



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# File 'lib/kamal/commands/prune.rb', line 22

def app_containers(retain:, role:)
  pipe \
    docker(:ps, "-q", "-a", *service_filter, *destination_filter, *role_filter(role), *stopped_containers_filters),
    "tail -n +#{retain + 1}",
    "while read container_id; do docker rm $container_id; done"
end

#dangling_images ⇒ Object 



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# File 'lib/kamal/commands/prune.rb', line 5

def dangling_images
  docker :image, :prune, "--force", "--filter", "label=service=#{config.service}"
end

#tagged_images ⇒ Object 



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# File 'lib/kamal/commands/prune.rb', line 9

def tagged_images
  pipe \
    docker(:image, :ls, *service_filter, "--format", "'{{.ID}} {{.Repository}}:{{.Tag}}'"),
    grep("-v -w \"#{active_image_list}\""),
    "while read image tag; do docker rmi $tag; done"
end