community.docker.docker_container module – manage docker containers

Note

This module is part of the community.docker collection (version 2.5.1).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install community.docker.

To use it in a playbook, specify: community.docker.docker_container.

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  • Docker SDK for Python: Please note that the docker-py Python module has been superseded by docker (see here for details).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

Parameter

Comments

api_version

aliases: docker_api_version

string

The version of the Docker API running on the Docker Host.

Defaults to the latest version of the API supported by Docker SDK for Python and the docker daemon.

If the value is not specified in the task, the value of environment variable DOCKER_API_VERSION will be used instead. If the environment variable is not set, the default value will be used.

Default: “auto”

auto_remove

boolean

Enable auto-removal of the container on daemon side when the container’s process exits.

If container_default_behavior is set to compatiblity, this option has a default of false.

Choices:

  • no

  • yes

blkio_weight

integer

Block IO (relative weight), between 10 and 1000.

ca_cert

aliases: tls_ca_cert, cacert_path

path

Use a CA certificate when performing server verification by providing the path to a CA certificate file.

If the value is not specified in the task and the environment variable DOCKER_CERT_PATH is set, the file ca.pem from the directory specified in the environment variable DOCKER_CERT_PATH will be used.

cap_drop

list / elements=string

List of capabilities to drop from the container.

capabilities

list / elements=string

List of capabilities to add to the container.

This is equivalent to docker run --cap-add, or the docker-compose option cap_add.

cgroup_parent

string

added in 1.1.0 of community.docker

Specify the parent cgroup for the container.

cleanup

boolean

Use with detach=false to remove the container after successful execution.

Choices:

  • no ← (default)

  • yes

client_cert

aliases: tls_client_cert, cert_path

path

Path to the client’s TLS certificate file.

If the value is not specified in the task and the environment variable DOCKER_CERT_PATH is set, the file cert.pem from the directory specified in the environment variable DOCKER_CERT_PATH will be used.

client_key

aliases: tls_client_key, key_path

path

Path to the client’s TLS key file.

If the value is not specified in the task and the environment variable DOCKER_CERT_PATH is set, the file key.pem from the directory specified in the environment variable DOCKER_CERT_PATH will be used.

command

raw

Command to execute when the container starts. A command may be either a string or a list.

Prior to version 2.4, strings were split on commas.

See command_handling for differences in how strings and lists are handled.

command_handling

string

added in 1.9.0 of community.docker

The default behavior for command (when provided as a list) and entrypoint is to convert them to strings without considering shell quoting rules. (For comparing idempotency, the resulting string is split considering shell quoting rules.)

Also, setting command to an empty list of string, and setting entrypoint to an empty list will be handled as if these options are not specified. This is different from idempotency handling for other container-config related options.

When this is set to compatiblity, which is the default until community.docker 3.0.0, the current behavior will be kept.

When this is set to correct, these options are kept as lists, and an empty value or empty list will be handled correctly for idempotency checks.

In community.docker 3.0.0, the default will change to correct.

Choices:

  • compatibility

  • correct

comparisons

dictionary

Allows to specify how properties of existing containers are compared with module options to decide whether the container should be recreated / updated or not.

Only options which correspond to the state of a container as handled by the Docker daemon can be specified, as well as networks.

Must be a dictionary specifying for an option one of the keys strict, ignore and allow_more_present.

If strict is specified, values are tested for equality, and changes always result in updating or restarting. If ignore is specified, changes are ignored.

allow_more_present is allowed only for lists, sets and dicts. If it is specified for lists or sets, the container will only be updated or restarted if the module option contains a value which is not present in the container’s options. If the option is specified for a dict, the container will only be updated or restarted if the module option contains a key which is not present in the container’s option, or if the value of a key present differs.

The wildcard option * can be used to set one of the default values strict or ignore to all comparisons which are not explicitly set to other values.

See the examples for details.

container_default_behavior

string

In older versions of this module, various module options used to have default values. This caused problems with containers which use different values for these options.

The default value is now no_defaults. To restore the old behavior, set it to compatibility, which will ensure that the default values are used when the values are not explicitly specified by the user.

This affects the auto_remove, detach, init, interactive, memory, paused, privileged, read_only and tty options.

Choices:

  • compatibility

  • no_defaults ← (default)

cpu_period

integer

Limit CPU CFS (Completely Fair Scheduler) period.

See cpus for an easier to use alternative.

cpu_quota

integer

Limit CPU CFS (Completely Fair Scheduler) quota.

See cpus for an easier to use alternative.

cpu_shares

integer

CPU shares (relative weight).

cpus

float

Specify how much of the available CPU resources a container can use.

A value of 1.5 means that at most one and a half CPU (core) will be used.

cpuset_cpus

string

CPUs in which to allow execution 1,3 or 1-3.

cpuset_mems

string

Memory nodes (MEMs) in which to allow execution 0-3 or 0,1.

debug

boolean

Debug mode

Choices:

  • no ← (default)

  • yes

default_host_ip

string

added in 1.2.0 of community.docker

Define the default host IP to use.

Must be an empty string, an IPv4 address, or an IPv6 address.

With Docker 20.10.2 or newer, this should be set to an empty string ("") to avoid the port bindings without an explicit IP address to only bind to IPv4. See https://github.com/ansible-collections/community.docker/issues/70 for details.

By default, the module will try to auto-detect this value from the bridge network’s com.docker.network.bridge.host_binding_ipv4 option. If it cannot auto-detect it, it will fall back to 0.0.0.0.

detach

boolean

Enable detached mode to leave the container running in background.

If disabled, the task will reflect the status of the container run (failed if the command failed).

If container_default_behavior is set to compatiblity, this option has a default of true.

Choices:

  • no

  • yes

device_read_bps

list / elements=dictionary

List of device path and read rate (bytes per second) from device.

path

string / required

Device path in the container.

rate

string / required

Device read limit in format <number>[<unit>].

Number is a positive integer. Unit can be one of B (byte), K (kibibyte, 1024B), M (mebibyte), G (gibibyte), T (tebibyte), or P (pebibyte).

Omitting the unit defaults to bytes.

device_read_iops

list / elements=dictionary

List of device and read rate (IO per second) from device.

path

string / required

Device path in the container.

rate

integer / required

Device read limit.

Must be a positive integer.

device_requests

list / elements=dictionary

added in 0.1.0 of community.docker

Allows to request additional resources, such as GPUs.

capabilities

list / elements=list

List of lists of strings to request capabilities.

The top-level list entries are combined by OR, and for every list entry, the entries in the list it contains are combined by AND.

The driver tries to satisfy one of the sub-lists.

Available capabilities for the nvidia driver can be found at https://github.com/NVIDIA/nvidia-container-runtime.

count

integer

Number or devices to request.

Set to -1 to request all available devices.

device_ids

list / elements=string

List of device IDs.

driver

string

Which driver to use for this device.

options

dictionary

Driver-specific options.

device_write_bps

list / elements=dictionary

List of device and write rate (bytes per second) to device.

path

string / required

Device path in the container.

rate

string / required

Device read limit in format <number>[<unit>].

Number is a positive integer. Unit can be one of B (byte), K (kibibyte, 1024B), M (mebibyte), G (gibibyte), T (tebibyte), or P (pebibyte).

Omitting the unit defaults to bytes.

device_write_iops

list / elements=dictionary

List of device and write rate (IO per second) to device.

path

string / required

Device path in the container.

rate

integer / required

Device read limit.

Must be a positive integer.

devices

list / elements=string

List of host device bindings to add to the container.

Each binding is a mapping expressed in the format <path_on_host>:<path_in_container>:<cgroup_permissions>.

dns_opts

list / elements=string

List of DNS options.

dns_search_domains

list / elements=string

List of custom DNS search domains.

dns_servers

list / elements=string

List of custom DNS servers.

docker_host

aliases: docker_url

string

The URL or Unix socket path used to connect to the Docker API. To connect to a remote host, provide the TCP connection string. For example, tcp://192.0.2.23:2376. If TLS is used to encrypt the connection, the module will automatically replace tcp in the connection URL with https.

If the value is not specified in the task, the value of environment variable DOCKER_HOST will be used instead. If the environment variable is not set, the default value will be used.

Default: “unix://var/run/docker.sock”

domainname

string

Container domainname.

entrypoint

list / elements=string

Command that overwrites the default ENTRYPOINT of the image.

See command_handling for differences in how strings and lists are handled.

env

dictionary

Dictionary of key,value pairs.

Values which might be parsed as numbers, booleans or other types by the YAML parser must be quoted (for example "true") in order to avoid data loss.

Please note that if you are passing values in with Jinja2 templates, like "{{ value }}", you need to add | string to prevent Ansible to convert strings such as "true" back to booleans. The correct way is to use "{{ value | string }}".

env_file

path

Path to a file, present on the target, containing environment variables FOO=BAR.

If variable also present in env, then the env value will override.

etc_hosts

dictionary

Dict of host-to-IP mappings, where each host name is a key in the dictionary. Each host name will be added to the container’s /etc/hosts file.

exposed_ports

aliases: exposed, expose

list / elements=string

List of additional container ports which informs Docker that the container listens on the specified network ports at runtime.

If the port is already exposed using EXPOSE in a Dockerfile, it does not need to be exposed again.

force_kill

aliases: forcekill

boolean

Use the kill command when stopping a running container.

Choices:

  • no ← (default)

  • yes

groups

list / elements=string

List of additional group names and/or IDs that the container process will run as.

healthcheck

dictionary

Configure a check that is run to determine whether or not containers for this service are “healthy”.

See the docs for the HEALTHCHECK Dockerfile instruction for details on how healthchecks work.

interval, timeout and start_period are specified as durations. They accept duration as a string in a format that look like: 5h34m56s, 1m30s etc. The supported units are us, ms, s, m and h.

interval

string

Time between running the check.

The default used by the Docker daemon is 30s.

retries

integer

Consecutive number of failures needed to report unhealthy.

The default used by the Docker daemon is 3.

start_period

string

Start period for the container to initialize before starting health-retries countdown.

The default used by the Docker daemon is 0s.

test

raw

Command to run to check health.

Must be either a string or a list. If it is a list, the first item must be one of NONE, CMD or CMD-SHELL.

timeout

string

Maximum time to allow one check to run.

The default used by the Docker daemon is 30s.

hostname

string

The container’s hostname.

ignore_image

boolean

When state is present or started, the module compares the configuration of an existing container to requested configuration. The evaluation includes the image version. If the image version in the registry does not match the container, the container will be recreated. You can stop this behavior by setting ignore_image to True.

Warning: This option is ignored if image: ignore or *: ignore is specified in the comparisons option.

Choices:

  • no ← (default)

  • yes

image

string

Repository path and tag used to create the container. If an image is not found or pull is true, the image will be pulled from the registry. If no tag is included, latest will be used.

Can also be an image ID. If this is the case, the image is assumed to be available locally. The pull option is ignored for this case.

init

boolean

Run an init inside the container that forwards signals and reaps processes.

This option requires Docker API >= 1.25.

If container_default_behavior is set to compatiblity, this option has a default of false.

Choices:

  • no

  • yes

interactive

boolean

Keep stdin open after a container is launched, even if not attached.

If container_default_behavior is set to compatiblity, this option has a default of false.

Choices:

  • no

  • yes

ipc_mode

string

Set the IPC mode for the container.

Can be one of container:<name|id> to reuse another container’s IPC namespace or host to use the host’s IPC namespace within the container.

keep_volumes

boolean

Retain anonymous volumes associated with a removed container.

Choices:

  • no

  • yes ← (default)

kernel_memory

string

Kernel memory limit in format <number>[<unit>]. Number is a positive integer. Unit can be B (byte), K (kibibyte, 1024B), M (mebibyte), G (gibibyte), T (tebibyte), or P (pebibyte). Minimum is 4M.

Omitting the unit defaults to bytes.

kill_signal

string

Override default signal used to kill a running container.

labels

dictionary

Dictionary of key value pairs.

list / elements=string

List of name aliases for linked containers in the format container_name:alias.

Setting this will force container to be restarted.

log_driver

string

Specify the logging driver. Docker uses json-file by default.

See here for possible choices.

log_options

aliases: log_opt

dictionary

Dictionary of options specific to the chosen log_driver.

See https://docs.docker.com/engine/admin/logging/overview/ for details.

log_driver needs to be specified for log_options to take effect, even if using the default json-file driver.

mac_address

string

Container MAC address (for example, 92:d0:c6:0a:29:33).

memory

string

Memory limit in format <number>[<unit>]. Number is a positive integer. Unit can be B (byte), K (kibibyte, 1024B), M (mebibyte), G (gibibyte), T (tebibyte), or P (pebibyte).

Omitting the unit defaults to bytes.

If container_default_behavior is set to compatiblity, this option has a default of "0".

memory_reservation

string

Memory soft limit in format <number>[<unit>]. Number is a positive integer. Unit can be B (byte), K (kibibyte, 1024B), M (mebibyte), G (gibibyte), T (tebibyte), or P (pebibyte).

Omitting the unit defaults to bytes.

memory_swap

string

Total memory limit (memory + swap) in format <number>[<unit>], or the special values unlimited or -1 for unlimited swap usage. Number is a positive integer. Unit can be B (byte), K (kibibyte, 1024B), M (mebibyte), G (gibibyte), T (tebibyte), or P (pebibyte).

Omitting the unit defaults to bytes.

memory_swappiness

integer

Tune a container’s memory swappiness behavior. Accepts an integer between 0 and 100.

If not set, the value will be remain the same if container exists and will be inherited from the host machine if it is (re-)created.

mounts

list / elements=dictionary

Specification for mounts to be added to the container. More powerful alternative to volumes.

consistency

string

The consistency requirement for the mount.

Choices:

  • cached

  • consistent

  • default

  • delegated

labels

dictionary

User-defined name and labels for the volume. Only valid for the volume type.

no_copy

boolean

False if the volume should be populated with the data from the target. Only valid for the volume type.

The default value is false.

Choices:

  • no

  • yes

propagation

string

Propagation mode. Only valid for the bind type.

Choices:

  • private

  • rprivate

  • shared

  • rshared

  • slave

  • rslave

read_only

boolean

Whether the mount should be read-only.

Choices:

  • no

  • yes

source

string

Mount source.

For example, this can be a volume name or a host path.

If not supplied when type=volume an anonymous volume will be created.

target

string / required

Path inside the container.

tmpfs_mode

string

The permission mode for the tmpfs mount.

tmpfs_size

string

The size for the tmpfs mount in bytes in format <number>[<unit>].

Number is a positive integer. Unit can be one of B (byte), K (kibibyte, 1024B), M (mebibyte), G (gibibyte), T (tebibyte), or P (pebibyte).

Omitting the unit defaults to bytes.

type

string

The mount type.

Note that npipe is only supported by Docker for Windows.

Choices:

  • bind

  • npipe

  • tmpfs

  • volume ← (default)

volume_driver

string

Specify the volume driver. Only valid for the volume type.

See here for details.

volume_options

dictionary

Dictionary of options specific to the chosen volume_driver. See here for details.

name

string / required

Assign a name to a new container or match an existing container.

When identifying an existing container name may be a name or a long or short container ID.

network_mode

string

Connect the container to a network. Choices are bridge, host, none, container:<name|id>, <network_name> or default.

Since community.docker 2.0.0, if networks_cli_compatible is true and networks contains at least one network, the default value for network_mode is the name of the first network in the networks list. You can prevent this by explicitly specifying a value for network_mode, like the default value default which will be used by Docker if network_mode is not specified.

networks

list / elements=dictionary

List of networks the container belongs to.

For examples of the data structure and usage see EXAMPLES below.

To remove a container from one or more networks, use the purge_networks option.

If networks_cli_compatible is set to false, this will not remove the default network if networks is specified. This is different from the behavior of docker run .... You need to explicitly use purge_networks to enforce the removal of the default network (and all other networks not explicitly mentioned in networks) in that case.

aliases

list / elements=string

List of aliases for this container in this network. These names can be used in the network to reach this container.

ipv4_address

string

The container’s IPv4 address in this network.

ipv6_address

string

The container’s IPv6 address in this network.

list / elements=string

A list of containers to link to.

name

string / required

The network’s name.

networks_cli_compatible

boolean

If networks_cli_compatible is set to yes (default), this module will behave as docker run --network and will not add the default network if networks is specified. If networks is not specified, the default network will be attached.

When networks_cli_compatible is set to no and networks are provided to the module via the networks option, the module behaves differently than docker run --network: docker run --network other will create a container with network other attached, but the default network not attached. This module with networks: {name: other} will create a container with both default and other attached. If purge_networks is set to yes, the default network will be removed afterwards.

Choices:

  • no

  • yes ← (default)

oom_killer

boolean

Whether or not to disable OOM Killer for the container.

Choices:

  • no

  • yes

oom_score_adj

integer

An integer value containing the score given to the container in order to tune OOM killer preferences.

output_logs

boolean

If set to true, output of the container command will be printed.

Only effective when log_driver is set to json-file, journald, or local.

Choices:

  • no ← (default)

  • yes

paused

boolean

Use with the started state to pause running processes inside the container.

If container_default_behavior is set to compatiblity, this option has a default of false.

Choices:

  • no

  • yes

pid_mode

string

Set the PID namespace mode for the container.

Note that Docker SDK for Python < 2.0 only supports host. Newer versions of the Docker SDK for Python (docker) allow all values supported by the Docker daemon.

pids_limit

integer

Set PIDs limit for the container. It accepts an integer value.

Set -1 for unlimited PIDs.

privileged

boolean

Give extended privileges to the container.

If container_default_behavior is set to compatiblity, this option has a default of false.

Choices:

  • no

  • yes

publish_all_ports

boolean

added in 1.8.0 of community.docker

Publish all ports to the host.

Any specified port bindings from published_ports will remain intact when true.

Choices:

  • no

  • yes

published_ports

aliases: ports

list / elements=string

List of ports to publish from the container to the host.

Use docker CLI syntax: 8000, 9000:8000, or 0.0.0.0:9000:8000, where 8000 is a container port, 9000 is a host port, and 0.0.0.0 is a host interface.

Port ranges can be used for source and destination ports. If two ranges with different lengths are specified, the shorter range will be used. Since community.general 0.2.0, if the source port range has length 1, the port will not be assigned to the first port of the destination range, but to a free port in that range. This is the same behavior as for docker command line utility.

Bind addresses must be either IPv4 or IPv6 addresses. Hostnames are not allowed. This is different from the docker command line utility. Use the dig lookup to resolve hostnames.

A value of all will publish all exposed container ports to random host ports, ignoring any other mappings. This is deprecated since version 2.0.0 and will be disallowed in community.docker 3.0.0. Use the publish_all_ports option instead.

If networks parameter is provided, will inspect each network to see if there exists a bridge network with optional parameter com.docker.network.bridge.host_binding_ipv4. If such a network is found, then published ports where no host IP address is specified will be bound to the host IP pointed to by com.docker.network.bridge.host_binding_ipv4. Note that the first bridge network with a com.docker.network.bridge.host_binding_ipv4 value encountered in the list of networks is the one that will be used.

pull

boolean

If true, always pull the latest version of an image. Otherwise, will only pull an image when missing.

Note: images are only pulled when specified by name. If the image is specified as a image ID (hash), it cannot be pulled.

Choices:

  • no ← (default)

  • yes

purge_networks

boolean

Remove the container from ALL networks not included in networks parameter.

Any default networks such as bridge, if not found in networks, will be removed as well.

Choices:

  • no ← (default)

  • yes

read_only

boolean

Mount the container’s root file system as read-only.

If container_default_behavior is set to compatiblity, this option has a default of false.

Choices:

  • no

  • yes

recreate

boolean

Use with present and started states to force the re-creation of an existing container.

Choices:

  • no ← (default)

  • yes

removal_wait_timeout

float

When removing an existing container, the docker daemon API call exists after the container is scheduled for removal. Removal usually is very fast, but it can happen that during high I/O load, removal can take longer. By default, the module will wait until the container has been removed before trying to (re-)create it, however long this takes.

By setting this option, the module will wait at most this many seconds for the container to be removed. If the container is still in the removal phase after this many seconds, the module will fail.

restart

boolean

Use with started state to force a matching container to be stopped and restarted.

Choices:

  • no ← (default)

  • yes

restart_policy

string

Container restart policy.

Place quotes around no option.

Choices:

  • no

  • on-failure

  • always

  • unless-stopped

restart_retries

integer

Use with restart policy to control maximum number of restart attempts.

runtime

string

Runtime to use for the container.

security_opts

list / elements=string

List of security options in the form of "label:user:User".

shm_size

string

Size of /dev/shm in format <number>[<unit>]. Number is positive integer. Unit can be B (byte), K (kibibyte, 1024B), M (mebibyte), G (gibibyte), T (tebibyte), or P (pebibyte).

Omitting the unit defaults to bytes. If you omit the size entirely, Docker daemon uses 64M.

ssl_version

string

Provide a valid SSL version number. Default value determined by ssl.py module.

If the value is not specified in the task, the value of environment variable DOCKER_SSL_VERSION will be used instead.

state

string

absent - A container matching the specified name will be stopped and removed. Use force_kill to kill the container rather than stopping it. Use keep_volumes to retain anonymous volumes associated with the removed container.

present - Asserts the existence of a container matching the name and any provided configuration parameters. If no container matches the name, a container will be created. If a container matches the name but the provided configuration does not match, the container will be updated, if it can be. If it cannot be updated, it will be removed and re-created with the requested config.

started - Asserts that the container is first present, and then if the container is not running moves it to a running state. Use restart to force a matching container to be stopped and restarted.

stopped - Asserts that the container is first present, and then if the container is running moves it to a stopped state.

To control what will be taken into account when comparing configuration, see the comparisons option. To avoid that the image version will be taken into account, you can also use the ignore_image option.

Use the recreate option to always force re-creation of a matching container, even if it is running.

If the container should be killed instead of stopped in case it needs to be stopped for recreation, or because state is stopped, please use the force_kill option. Use keep_volumes to retain anonymous volumes associated with a removed container.

Use keep_volumes to retain anonymous volumes associated with a removed container.

Choices:

  • absent

  • present

  • stopped

  • started ← (default)

stop_signal

string

Override default signal used to stop the container.

stop_timeout

integer

Number of seconds to wait for the container to stop before sending SIGKILL. When the container is created by this module, its StopTimeout configuration will be set to this value.

When the container is stopped, will be used as a timeout for stopping the container. In case the container has a custom StopTimeout configuration, the behavior depends on the version of the docker daemon. New versions of the docker daemon will always use the container’s configured StopTimeout value if it has been configured.

storage_opts

dictionary

added in 1.3.0 of community.docker

Storage driver options for this container as a key-value mapping.

sysctls

dictionary

Dictionary of key,value pairs.

timeout

integer

The maximum amount of time in seconds to wait on a response from the API.

If the value is not specified in the task, the value of environment variable DOCKER_TIMEOUT will be used instead. If the environment variable is not set, the default value will be used.

Default: 60

tls

boolean

Secure the connection to the API by using TLS without verifying the authenticity of the Docker host server. Note that if validate_certs is set to yes as well, it will take precedence.

If the value is not specified in the task, the value of environment variable DOCKER_TLS will be used instead. If the environment variable is not set, the default value will be used.

Choices:

  • no ← (default)

  • yes

tls_hostname

string

When verifying the authenticity of the Docker Host server, provide the expected name of the server.

If the value is not specified in the task, the value of environment variable DOCKER_TLS_HOSTNAME will be used instead. If the environment variable is not set, the default value will be used.

The current default value is localhost. This default is deprecated and will change in community.docker 2.0.0 to be a value computed from docker_host. Explicitly specify localhost to make sure this value will still be used, and to disable the deprecation message which will be shown otherwise.

tmpfs

list / elements=string

Mount a tmpfs directory.

tty

boolean

Allocate a pseudo-TTY.

If container_default_behavior is set to compatiblity, this option has a default of false.

Choices:

  • no

  • yes

ulimits

list / elements=string

List of ulimit options. A ulimit is specified as nofile:262144:262144.

use_ssh_client

boolean

added in 1.5.0 of community.docker

For SSH transports, use the ssh CLI tool instead of paramiko.

Requires Docker SDK for Python 4.4.0 or newer.

Choices:

  • no ← (default)

  • yes

user

string

Sets the username or UID used and optionally the groupname or GID for the specified command.

Can be of the forms user, user:group, uid, uid:gid, user:gid or uid:group.

userns_mode

string

Set the user namespace mode for the container. Currently, the only valid value are host and the empty string.

uts

string

Set the UTS namespace mode for the container.

validate_certs

aliases: tls_verify

boolean

Secure the connection to the API by using TLS and verifying the authenticity of the Docker host server.

If the value is not specified in the task, the value of environment variable DOCKER_TLS_VERIFY will be used instead. If the environment variable is not set, the default value will be used.

Choices:

  • no ← (default)

  • yes

volume_driver

string

The container volume driver.

volumes

list / elements=string

List of volumes to mount within the container.

Use docker CLI-style syntax: /host:/container[:mode]

Mount modes can be a comma-separated list of various modes such as ro, rw, consistent, delegated, cached, rprivate, private, rshared, shared, rslave, slave, and nocopy. Note that the docker daemon might not support all modes and combinations of such modes.

SELinux hosts can additionally use z or Z to use a shared or private label for the volume.

Note that Ansible 2.7 and earlier only supported one mode, which had to be one of ro, rw, z, and Z.

volumes_from

list / elements=string

List of container names or IDs to get volumes from.

working_dir

string

Path to the working directory.

Notes

Note

  • For most config changes, the container needs to be recreated. This means that the existing container has to be destroyed and a new one created. This can cause unexpected data loss and downtime. You can use the comparisons option to prevent this.

  • If the module needs to recreate the container, it will only use the options provided to the module to create the new container (except image). Therefore, always specify all options relevant to the container.

  • When restart is set to true, the module will only restart the container if no config changes are detected.

  • Connect to the Docker daemon by providing parameters with each task or by defining environment variables. You can define DOCKER_HOST, DOCKER_TLS_HOSTNAME, DOCKER_API_VERSION, DOCKER_CERT_PATH, DOCKER_SSL_VERSION, DOCKER_TLS, DOCKER_TLS_VERIFY and DOCKER_TIMEOUT. If you are using docker machine, run the script shipped with the product that sets up the environment. It will set these variables for you. See https://docs.docker.com/machine/reference/env/ for more details.

  • When connecting to Docker daemon with TLS, you might need to install additional Python packages. For the Docker SDK for Python, version 2.4 or newer, this can be done by installing docker[tls] with ansible.builtin.pip.

  • Note that the Docker SDK for Python only allows to specify the path to the Docker configuration for very few functions. In general, it will use $HOME/.docker/config.json if the DOCKER_CONFIG environment variable is not specified, and use $DOCKER_CONFIG/config.json otherwise.

  • This module uses the Docker SDK for Python to communicate with the Docker daemon.

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   # do not 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:

Key

Description

container

dictionary

Facts representing the current state of the container. Matches the docker inspection output.

Empty if state is absent.

If detach=false, will include Output attribute containing any output from container run.

Returned: success; or when state=started and detach=false, and when waiting for the container result did not fail

Sample: “{ \”AppArmorProfile\”: \”\”, \”Args\”: [], \”Config\”: { \”AttachStderr\”: false, \”AttachStdin\”: false, \”AttachStdout\”: false, \”Cmd\”: [ \”/usr/bin/supervisord\” ], \”Domainname\”: \”\”, \”Entrypoint\”: null, \”Env\”: [ \”PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin\” ], \”ExposedPorts\”: { \”443/tcp\”: {}, \”80/tcp\”: {} }, \”Hostname\”: \”8e47bf643eb9\”, \”Image\”: \”lnmp_nginx:v1\”, \”Labels\”: {}, \”OnBuild\”: null, \”OpenStdin\”: false, \”StdinOnce\”: false, \”Tty\”: false, \”User\”: \”\”, \”Volumes\”: { \”/tmp/lnmp/nginx-sites/logs/\”: {} }, … }”

status

integer

In case a container is started without detaching, this contains the exit code of the process in the container.

Before community.docker 1.1.0, this was only returned when non-zero.

Returned: when state=started and detach=false, and when waiting for the container result did not fail

Sample: 0

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)