community.docker.docker_container – manage docker containers

• Synopsis
• Requirements
• Parameters
• Notes
• Examples
• Return Values

Synopsis

• Manage the life cycle of docker containers.
• Supports check mode. Run with --check and --diff to view config difference and list of actions to be taken.

Requirements

The below requirements are needed on the host that executes this module.

• Docker API >= 1.20
• Docker SDK for Python: Please note that the docker-py Python module has been superseded by docker (see here for details). For Python 2.6, docker-py must be used. Otherwise, it is recommended to install the docker Python module. Note that both modules should not be installed at the same time. Also note that when both modules are installed and one of them is uninstalled, the other might no longer function and a reinstall of it is required.
• Docker SDK for Python >= 1.8.0 (use docker-py for Python 2.6)

Parameters

Notes

Examples

- name: Create a data container
  community.docker.docker_container:
    name: mydata
    image: busybox
    volumes:
      - /data

- name: Re-create a redis container
  community.docker.docker_container:
    name: myredis
    image: redis
    command: redis-server --appendonly yes
    state: present
    recreate: yes
    exposed_ports:
      - 6379
    volumes_from:
      - mydata

- name: Restart a container
  community.docker.docker_container:
    name: myapplication
    image: someuser/appimage
    state: started
    restart: yes
    links:
     - "myredis:aliasedredis"
    devices:
     - "/dev/sda:/dev/xvda:rwm"
    ports:
     # Publish container port 9000 as host port 8080
     - "8080:9000"
     # Publish container UDP port 9001 as host port 8081 on interface 127.0.0.1
     - "127.0.0.1:8081:9001/udp"
     # Publish container port 9002 as a random host port
     - "9002"
     # Publish container port 9003 as a free host port in range 8000-8100
     # (the host port will be selected by the Docker daemon)
     - "8000-8100:9003"
     # Publish container ports 9010-9020 to host ports 7000-7010
     - "7000-7010:9010-9020"
    env:
        SECRET_KEY: "ssssh"
        # Values which might be parsed as numbers, booleans or other types by the YAML parser need to be quoted
        BOOLEAN_KEY: "yes"

- name: Container present
  community.docker.docker_container:
    name: mycontainer
    state: present
    image: ubuntu:14.04
    command: sleep infinity

- name: Stop a container
  community.docker.docker_container:
    name: mycontainer
    state: stopped

- name: Start 4 load-balanced containers
  community.docker.docker_container:
    name: "container{{ item }}"
    recreate: yes
    image: someuser/anotherappimage
    command: sleep 1d
  with_sequence: count=4

- name: Remove container
  community.docker.docker_container:
    name: ohno
    state: absent

- name: Syslogging output
  community.docker.docker_container:
    name: myservice
    image: busybox
    log_driver: syslog
    log_options:
      syslog-address: tcp://my-syslog-server:514
      syslog-facility: daemon
      # NOTE: in Docker 1.13+ the "syslog-tag" option was renamed to "tag" for
      # older docker installs, use "syslog-tag" instead
      tag: myservice

- name: Create db container and connect to network
  community.docker.docker_container:
    name: db_test
    image: "postgres:latest"
    networks:
      - name: "{{ docker_network_name }}"

- name: Start container, connect to network and link
  community.docker.docker_container:
    name: sleeper
    image: ubuntu:14.04
    networks:
      - name: TestingNet
        ipv4_address: "172.16.1.100"
        aliases:
          - sleepyzz
        links:
          - db_test:db
      - name: TestingNet2

- name: Start a container with a command
  community.docker.docker_container:
    name: sleepy
    image: ubuntu:14.04
    command: ["sleep", "infinity"]

- name: Add container to networks
  community.docker.docker_container:
    name: sleepy
    networks:
      - name: TestingNet
        ipv4_address: 172.16.1.18
        links:
          - sleeper
      - name: TestingNet2
        ipv4_address: 172.16.10.20

- name: Update network with aliases
  community.docker.docker_container:
    name: sleepy
    networks:
      - name: TestingNet
        aliases:
          - sleepyz
          - zzzz

- name: Remove container from one network
  community.docker.docker_container:
    name: sleepy
    networks:
      - name: TestingNet2
    purge_networks: yes

- name: Remove container from all networks
  community.docker.docker_container:
    name: sleepy
    purge_networks: yes

- name: Start a container and use an env file
  community.docker.docker_container:
    name: agent
    image: jenkinsci/ssh-slave
    env_file: /var/tmp/jenkins/agent.env

- name: Create a container with limited capabilities
  community.docker.docker_container:
    name: sleepy
    image: ubuntu:16.04
    command: sleep infinity
    capabilities:
      - sys_time
    cap_drop:
      - all

- name: Finer container restart/update control
  community.docker.docker_container:
    name: test
    image: ubuntu:18.04
    env:
      arg1: "true"
      arg2: "whatever"
    volumes:
      - /tmp:/tmp
    comparisons:
      image: ignore   # don't restart containers with older versions of the image
      env: strict   # we want precisely this environment
      volumes: allow_more_present   # if there are more volumes, that's ok, as long as `/tmp:/tmp` is there

- name: Finer container restart/update control II
  community.docker.docker_container:
    name: test
    image: ubuntu:18.04
    env:
      arg1: "true"
      arg2: "whatever"
    comparisons:
      '*': ignore  # by default, ignore *all* options (including image)
      env: strict   # except for environment variables; there, we want to be strict

- name: Start container with healthstatus
  community.docker.docker_container:
    name: nginx-proxy
    image: nginx:1.13
    state: started
    healthcheck:
      # Check if nginx server is healthy by curl'ing the server.
      # If this fails or timeouts, the healthcheck fails.
      test: ["CMD", "curl", "--fail", "http://nginx.host.com"]
      interval: 1m30s
      timeout: 10s
      retries: 3
      start_period: 30s

- name: Remove healthcheck from container
  community.docker.docker_container:
    name: nginx-proxy
    image: nginx:1.13
    state: started
    healthcheck:
      # The "NONE" check needs to be specified
      test: ["NONE"]

- name: Start container with block device read limit
  community.docker.docker_container:
    name: test
    image: ubuntu:18.04
    state: started
    device_read_bps:
      # Limit read rate for /dev/sda to 20 mebibytes per second
      - path: /dev/sda
        rate: 20M
    device_read_iops:
      # Limit read rate for /dev/sdb to 300 IO per second
      - path: /dev/sdb
        rate: 300

- name: Start container with GPUs
  community.docker.docker_container:
    name: test
    image: ubuntu:18.04
    state: started
    device_requests:
      - # Add some specific devices to this container
        device_ids:
          - '0'
          - 'GPU-3a23c669-1f69-c64e-cf85-44e9b07e7a2a'
      - # Add nVidia GPUs to this container
        driver: nvidia
        count: -1  # this means we want all
        capabilities:
          # We have one OR condition: 'gpu' AND 'utility'
          - - gpu
            - utility
          # See https://github.com/NVIDIA/nvidia-container-runtime#supported-driver-capabilities
          # for a list of capabilities supported by the nvidia driver

- name: Start container with storage options
  community.docker.docker_container:
    name: test
    image: ubuntu:18.04
    state: started
    storage_opts:
      # Limit root filesystem to 12 MB - note that this requires special storage backends
      # (https://fabianlee.org/2020/01/15/docker-use-overlay2-with-an-xfs-backing-filesystem-to-limit-rootfs-size/)
      size: 12m

Return Values

Common return values are documented here, the following are the fields unique to this module:

Authors

• Cove Schneider (@cove)
• Joshua Conner (@joshuaconner)
• Pavel Antonov (@softzilla)
• Thomas Steinbach (@ThomasSteinbach)
• Philippe Jandot (@zfil)
• Daan Oosterveld (@dusdanig)
• Chris Houseknecht (@chouseknecht)
• Kassian Sun (@kassiansun)
• Felix Fontein (@felixfontein)