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docker_service.md

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docker_service

The docker_service: resource is a composite resource that uses docker_installation and docker_service_manager resources.

  • The :create action uses a docker_installation
  • The :delete action uses a docker_installation
  • The :start action uses a docker_service_manager
  • The :stop action uses a docker_service_manager

The service management strategy for the host platform is dynamically chosen based on platform, but can be overridden.

Example

docker_service 'tls_test:2376' do
  host [ "tcp://#{node['ipaddress']}:2376", 'unix:///var/run/docker.sock' ]
  tls_verify true
  tls_ca_cert '/path/to/ca.pem'
  tls_server_cert '/path/to/server.pem'
  tls_server_key '/path/to/server-key.pem'
  tls_client_cert '/path/to/client.pem'
  tls_client_key '/path/to/client-key.pem'
  action [:create, :start]
end

WARNING - When creating multiple docker_service resources on the same machine, you will need to specify unique data_root properties to avoid unexpected behavior and possible data corruption.

Properties

The docker_service resource property list mostly corresponds to the options found in the Docker Command Line Reference

  • api_cors_header - Set CORS headers in the remote API
  • auto_restart
  • exec_opts
  • bip - Specify network bridge IP
  • bridge - Attach containers to a network bridge
  • checksum - sha256 checksum of Docker binary
  • cluster_advertise - IP and port that this daemon should advertise to the cluster
  • cluster_store_opts - Cluster store options
  • cluster_store - Cluster store to use
  • daemon - Enable daemon mode
  • data_root - Root of the Docker runtime
  • debug - Enable debug mode
  • default_ip_address_pool - Set the default address pool for networks creates by docker
  • default_ulimit - Set default ulimit settings for containers
  • disable_legacy_registry - Do not contact legacy registries
  • dns_search - DNS search domains to use
  • dns - DNS server(s) to use
  • exec_driver - Exec driver to use
  • fixed_cidr_v6 - IPv6 subnet for fixed IPs
  • fixed_cidr - IPv4 subnet for fixed IPs
  • group - Posix group for the unix socket. Default to docker
  • host - Daemon socket(s) to connect to - tcp://host:port, unix:///path/to/socket, fd://* or fd://socketfd
  • http_proxy - ENV variable set before for Docker daemon starts
  • https_proxy - ENV variable set before for Docker daemon starts
  • icc - Enable inter-container communication
  • insecure_registry - Enable insecure registry communication
  • install_method - Select script, package, tarball, none, or auto. Defaults to auto.
  • instance- Optional property used to override the name provided in the resource.
  • ip_forward - Enable ip forwarding
  • ip_masq - Enable IP masquerading
  • ip - Default IP when binding container ports
  • iptables - Enable addition of iptables rules
  • ip6tables - Enable addition of ip6tables rules
  • ipv4_forward - Enable net.ipv4.ip_forward
  • ipv6_forward - Enable net.ipv6.ip_forward
  • ipv6 - Enable IPv6 networking
  • labels A string or array to set metadata on the daemon in the form ['foo:bar', 'hello:world']`
  • log_driver - Container's logging driver (json-file/syslog/journald/gelf/fluentd/awslogs/splunk/etwlogs/gcplogs/logentries/loki-docker/local/none)
  • log_level - Set the logging level
  • log_opts - Container's logging driver options (driver-specific)
  • logfile - Location of Docker daemon log file
  • mount_flags - Set the systemd mount propagation flag.
  • mtu - Set the containers network MTU
  • no_proxy - ENV variable set before for Docker daemon starts
  • package_name - Set the package name. Defaults to docker-ce
  • pidfile - Path to use for daemon PID file
  • registry_mirror - A string or array to set the preferred Docker registry mirror(s)
  • selinux_enabled - Enable selinux support
  • source - URL to the pre-compiled Docker binary used for installation. Defaults to a calculated URL based on kernel version, Docker version, and platform arch. By default, this will try to get to "http://get.docker.io/builds/".
  • storage_driver - Storage driver to use
  • storage_opts - Set storage driver options
  • tls_ca_cert - Trust certs signed only by this CA. Defaults to ENV['DOCKER_CERT_PATH'] if set
  • tls_client_cert - Path to TLS certificate file for docker cli. Defaults to ENV['DOCKER_CERT_PATH'] if set
  • tls_client_key - Path to TLS key file for docker cli. Defaults to ENV['DOCKER_CERT_PATH'] if set
  • tls_server_cert - Path to TLS certificate file for docker service
  • tls_server_key - Path to TLS key file for docker service
  • tls_verify - Use TLS and verify the remote. Defaults to ENV['DOCKER_TLS_VERIFY'] if set
  • tls - Use TLS; implied by --tlsverify. Defaults to ENV['DOCKER_TLS'] if set
  • tmpdir - ENV variable set before for Docker daemon starts
  • userland_proxy- Enables or disables docker-proxy
  • userns_remap - Enable user namespace remapping options - default, uid, uid:gid, username, username:groupname (see: Docker User Namespaces)
  • live_restore - Keep containers alive during daemon downtime (see: Live restore)
  • version - Docker version to install

Miscellaneous Options

  • misc_opts - Pass the docker daemon any other options bypassing flag validation, supplied as --flag=value

Systemd-specific Options

  • systemd_opts - An array of strings that will be included as individual lines in the systemd service unit for Docker. Note: This option is only relevant for systems where systemd is the default service manager or where systemd is specified explicitly as the service manager.
  • systemd_socket_opts - An array of strings that will be included as individual lines in the systemd socket unit for Docker. Note: This option is only relevant for systems where systemd is the default service manager or where systemd is specified explicitly as the service manager.

Actions

  • :create - Lays the Docker bits out on disk
  • :delete - Removes the Docker bits from the disk
  • :start - Makes sure the service provider is set up properly and start it
  • :stop - Stops the service
  • :restart - Restarts the service

docker_service implementations

  • docker_service_execute - The simplest docker_service. Just starts a process. Fire and forget.
  • docker_service_systemd - Uses an Systemd unit file to manage the service state. NOTE: This does NOT enable systemd socket activation.