community.docker.docker_swarm_service – docker swarm service¶
Note
This plugin is part of the community.docker collection (version 1.5.0).
To install it use: ansible-galaxy collection install community.docker
.
To use it in a playbook, specify: community.docker.docker_swarm_service
.
Requirements¶
The below requirements are needed on the host that executes this module.
Docker API >= 1.24
Docker SDK for Python: Please note that the docker-py Python module has been superseded by docker (see here for details). This module does not work with docker-py.
Docker SDK for Python >= 2.0.2
Python >= 2.7
Parameters¶
Parameter | Choices/Defaults | Comments | ||
---|---|---|---|---|
api_version
string
|
Default: "auto"
|
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.aliases: docker_api_version |
||
args
list
/ elements=string
|
List arguments to be passed to the container.
Corresponds to the
ARG parameter of docker service create . |
|||
ca_cert
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.aliases: tls_ca_cert, cacert_path |
|||
client_cert
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.aliases: tls_client_cert, cert_path |
|||
client_key
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.aliases: tls_client_key, key_path |
|||
command
raw
|
Command to execute when the container starts.
A command may be either a string or a list or a list of strings.
Corresponds to the
COMMAND parameter of docker service create . |
|||
configs
list
/ elements=dictionary
|
List of dictionaries describing the service configs.
Corresponds to the
--config option of docker service create .Requires API version >= 1.30.
|
|||
config_id
string
|
Config's ID.
|
|||
config_name
string
/ required
|
Config's name as defined at its creation.
|
|||
filename
string
|
Name of the file containing the config. Defaults to the config_name if not specified.
|
|||
gid
string
|
GID of the config file's group.
|
|||
mode
integer
|
File access mode inside the container. Must be an octal number (like
0644 or 0444 ). |
|||
uid
string
|
UID of the config file's owner.
|
|||
container_labels
dictionary
|
Dictionary of key value pairs.
Corresponds to the
--container-label option of docker service create . |
|||
debug
boolean
|
|
Debug mode
|
||
dns
list
/ elements=string
|
List of custom DNS servers.
Corresponds to the
--dns option of docker service create .Requires API version >= 1.25.
|
|||
dns_options
list
/ elements=string
|
List of custom DNS options.
Corresponds to the
--dns-option option of docker service create .Requires API version >= 1.25.
|
|||
dns_search
list
/ elements=string
|
List of custom DNS search domains.
Corresponds to the
--dns-search option of docker service create .Requires API version >= 1.25.
|
|||
docker_host
string
|
Default: "unix://var/run/docker.sock"
|
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.aliases: docker_url |
||
endpoint_mode
string
|
|
Service endpoint mode.
Corresponds to the
--endpoint-mode option of docker service create .Requires API version >= 1.25.
|
||
env
raw
|
List or dictionary of the service environment variables.
If passed a list each items need to be in the format of
KEY=VALUE .If passed a dictionary values which might be parsed as numbers, booleans or other types by the YAML parser must be quoted (e.g.
"true" ) in order to avoid data loss.Corresponds to the
--env option of docker service create . |
|||
env_files
list
/ elements=path
|
List of paths to files, present on the target, containing environment variables
FOO=BAR .The order of the list is significant in determining the value assigned to a variable that shows up more than once.
If variable also present in env, then env value will override.
|
|||
force_update
boolean
|
|
Force update even if no changes require it.
Corresponds to the
--force option of docker service update .Requires API version >= 1.25.
|
||
groups
list
/ elements=string
|
List of additional group names and/or IDs that the container process will run as.
Corresponds to the
--group option of docker service update .Requires API version >= 1.25.
|
|||
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 .Requires API version >= 1.25.
|
|||
interval
string
|
Time between running the check.
|
|||
retries
integer
|
Consecutive failures needed to report unhealthy. It accept integer value.
|
|||
start_period
string
|
Start period for the container to initialize before starting health-retries countdown.
|
|||
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.
|
|||
hostname
string
|
Container hostname.
Corresponds to the
--hostname option of docker service create .Requires API version >= 1.25.
|
|||
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.
Corresponds to the
--host option of docker service create .Requires API version >= 1.25.
|
|||
image
string
|
Service image path and tag.
Corresponds to the
IMAGE parameter of docker service create . |
|||
init
boolean
|
|
Use an init inside each service container to forward signals and reap processes.
Corresponds to the
--init option of docker service create .Requires API version >= 1.37.
|
||
labels
dictionary
|
Dictionary of key value pairs.
Corresponds to the
--label option of docker service create . |
|||
limits
dictionary
|
Configures service resource limits.
|
|||
cpus
float
|
Service CPU limit.
0 equals no limit.Corresponds to the
--limit-cpu option of docker service create . |
|||
memory
string
|
Service 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).0 equals no limit.Omitting the unit defaults to bytes.
Corresponds to the
--limit-memory option of docker service create . |
|||
logging
dictionary
|
Logging configuration for the service.
|
|||
driver
string
|
Configure the logging driver for a service.
Corresponds to the
--log-driver option of docker service create . |
|||
options
dictionary
|
Options for service logging driver.
Corresponds to the
--log-opt option of docker service create . |
|||
mode
string
|
|
Service replication mode.
Service will be removed and recreated when changed.
Corresponds to the
--mode option of docker service create . |
||
mounts
list
/ elements=dictionary
|
List of dictionaries describing the service mounts.
Corresponds to the
--mount option of docker service create . |
|||
driver_config
dictionary
|
Volume driver configuration.
Can only be used when type is
volume . |
|||
name
string
|
Name of the volume-driver plugin to use for the volume.
|
|||
options
dictionary
|
Options as key-value pairs to pass to the driver for this volume.
|
|||
labels
dictionary
|
Volume labels to apply.
|
|||
no_copy
boolean
|
|
Disable copying of data from a container when a volume is created.
Can only be used when type is
volume . |
||
propagation
string
|
|
The propagation mode to use.
Can only be used when type is
bind . |
||
readonly
boolean
|
|
Whether the mount should be read-only.
|
||
source
string
|
Mount source (e.g. a volume name or a host path).
Must be specified if type is not
tmpfs . |
|||
target
string
/ required
|
Container path.
|
|||
tmpfs_mode
integer
|
File mode of the tmpfs in octal.
Can only be used when type is
tmpfs . |
|||
tmpfs_size
string
|
Size of the tmpfs mount 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).Can only be used when type is
tmpfs . |
|||
type
string
|
|
The mount type.
Note that
npipe is only supported by Docker for Windows. Also note that npipe was added in Ansible 2.9. |
||
name
string
/ required
|
Service name.
Corresponds to the
--name option of docker service create . |
|||
networks
list
/ elements=raw
|
List of the service networks names or dictionaries.
When passed dictionaries valid sub-options are name, which is required, and aliases and options.
Prior to API version 1.29, updating and removing networks is not supported. If changes are made the service will then be removed and recreated.
Corresponds to the
--network option of docker service create . |
|||
placement
dictionary
|
Configures service placement preferences and constraints.
|
|||
constraints
list
/ elements=string
|
List of the service constraints.
Corresponds to the
--constraint option of docker service create . |
|||
preferences
list
/ elements=dictionary
|
List of the placement preferences as key value pairs.
Corresponds to the
--placement-pref option of docker service create .Requires API version >= 1.27.
|
|||
replicas_max_per_node
integer
added in 1.3.0 of community.docker
|
Maximum number of tasks per node.
Corresponds to the
--replicas_max_per_node option of docker service create .Requires API version >= 1.40
|
|||
publish
list
/ elements=dictionary
|
List of dictionaries describing the service published ports.
Corresponds to the
--publish option of docker service create .Requires API version >= 1.25.
|
|||
mode
string
|
|
What publish mode to use.
Requires API version >= 1.32.
|
||
protocol
string
|
|
What protocol to use.
|
||
published_port
integer
|
The port to make externally available.
|
|||
target_port
integer
/ required
|
The port inside the container to expose.
|
|||
read_only
boolean
|
|
Mount the containers root filesystem as read only.
Corresponds to the
--read-only option of docker service create . |
||
replicas
integer
|
Default: -1
|
Number of containers instantiated in the service. Valid only if mode is
replicated .If set to
-1 , and service is not present, service replicas will be set to 1 .If set to
-1 , and service is present, service replicas will be unchanged.Corresponds to the
--replicas option of docker service create . |
||
reservations
dictionary
|
Configures service resource reservations.
|
|||
cpus
float
|
Service CPU reservation.
0 equals no reservation.Corresponds to the
--reserve-cpu option of docker service create . |
|||
memory
string
|
Service memory reservation 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).0 equals no reservation.Omitting the unit defaults to bytes.
Corresponds to the
--reserve-memory option of docker service create . |
|||
resolve_image
boolean
|
|
If the current image digest should be resolved from registry and updated if changed.
Requires API version >= 1.30.
|
||
restart_config
dictionary
|
Configures if and how to restart containers when they exit.
|
|||
condition
string
|
|
Restart condition of the service.
Corresponds to the
--restart-condition option of docker service create . |
||
delay
string
|
Delay between restarts.
Accepts a a string in a format that look like:
5h34m56s , 1m30s etc. The supported units are us , ms , s , m and h .Corresponds to the
--restart-delay option of docker service create . |
|||
max_attempts
integer
|
Maximum number of service restarts.
Corresponds to the
--restart-condition option of docker service create . |
|||
window
string
|
Restart policy evaluation window.
Accepts a string in a format that look like:
5h34m56s , 1m30s etc. The supported units are us , ms , s , m and h .Corresponds to the
--restart-window option of docker service create . |
|||
rollback_config
dictionary
|
Configures how the service should be rolled back in case of a failing update.
|
|||
delay
string
|
Delay between task rollbacks.
Accepts a string in a format that look like:
5h34m56s , 1m30s etc. The supported units are us , ms , s , m and h .Corresponds to the
--rollback-delay option of docker service create .Requires API version >= 1.28.
|
|||
failure_action
string
|
|
Action to take in case of rollback failure.
Corresponds to the
--rollback-failure-action option of docker service create .Requires API version >= 1.28.
|
||
max_failure_ratio
float
|
Fraction of tasks that may fail during a rollback.
Corresponds to the
--rollback-max-failure-ratio option of docker service create .Requires API version >= 1.28.
|
|||
monitor
string
|
Duration after each task rollback to monitor for failure.
Accepts a string in a format that look like:
5h34m56s , 1m30s etc. The supported units are us , ms , s , m and h .Corresponds to the
--rollback-monitor option of docker service create .Requires API version >= 1.28.
|
|||
order
string
|
Specifies the order of operations during rollbacks.
Corresponds to the
--rollback-order option of docker service create .Requires API version >= 1.29.
|
|||
parallelism
integer
|
The number of containers to rollback at a time. If set to 0, all containers rollback simultaneously.
Corresponds to the
--rollback-parallelism option of docker service create .Requires API version >= 1.28.
|
|||
secrets
list
/ elements=dictionary
|
List of dictionaries describing the service secrets.
Corresponds to the
--secret option of docker service create .Requires API version >= 1.25.
|
|||
filename
string
|
Name of the file containing the secret. Defaults to the secret_name if not specified.
Corresponds to the
target key of docker service create --secret . |
|||
gid
string
|
GID of the secret file's group.
|
|||
mode
integer
|
File access mode inside the container. Must be an octal number (like
0644 or 0444 ). |
|||
secret_id
string
|
Secret's ID.
|
|||
secret_name
string
/ required
|
Secret's name as defined at its creation.
|
|||
uid
string
|
UID of the secret file's owner.
|
|||
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 service matching the specified name will be removed and have its tasks stopped.present - Asserts the existence of a service matching the name and provided configuration parameters. Unspecified configuration parameters will be set to docker defaults. |
||
stop_grace_period
string
|
Time to wait before force killing a container.
Accepts a duration as a string in a format that look like:
5h34m56s , 1m30s etc. The supported units are us , ms , s , m and h .Corresponds to the
--stop-grace-period option of docker service create . |
|||
stop_signal
string
|
Override default signal used to stop the container.
Corresponds to the
--stop-signal option of docker service create . |
|||
timeout
integer
|
Default: 60
|
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. |
||
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. |
||
tls_hostname
string
|
Default: "localhost"
|
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. |
||
tty
boolean
|
|
Allocate a pseudo-TTY.
Corresponds to the
--tty option of docker service create .Requires API version >= 1.25.
|
||
update_config
dictionary
|
Configures how the service should be updated. Useful for configuring rolling updates.
|
|||
delay
string
|
Rolling update delay.
Accepts a string in a format that look like:
5h34m56s , 1m30s etc. The supported units are us , ms , s , m and h .Corresponds to the
--update-delay option of docker service create . |
|||
failure_action
string
|
|
Action to take in case of container failure.
Corresponds to the
--update-failure-action option of docker service create .Usage of rollback requires API version >= 1.29.
|
||
max_failure_ratio
float
|
Fraction of tasks that may fail during an update before the failure action is invoked.
Corresponds to the
--update-max-failure-ratio option of docker service create .Requires API version >= 1.25.
|
|||
monitor
string
|
Time to monitor updated tasks for failures.
Accepts a string in a format that look like:
5h34m56s , 1m30s etc. The supported units are us , ms , s , m and h .Corresponds to the
--update-monitor option of docker service create .Requires API version >= 1.25.
|
|||
order
string
|
Specifies the order of operations when rolling out an updated task.
Corresponds to the
--update-order option of docker service create .Requires API version >= 1.29.
|
|||
parallelism
integer
|
Rolling update parallelism.
Corresponds to the
--update-parallelism option of docker service create . |
|||
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.
|
||
user
string
|
Sets the username or UID used for the specified command.
Before Ansible 2.8, the default value for this option was
root .The default has been removed so that the user defined in the image is used if no user is specified here.
Corresponds to the
--user option of docker service create . |
|||
validate_certs
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.aliases: tls_verify |
||
working_dir
string
|
Path to the working directory.
Corresponds to the
--workdir option of docker service create . |
Notes¶
Note
Images will only resolve to the latest digest when using Docker API >= 1.30 and Docker SDK for Python >= 3.2.0. When using older versions use
force_update: true
to trigger the swarm to resolve a new image.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
andDOCKER_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
$HOME/.docker/config.json
if theDOCKER_CONFIG
environment variable is not specified, and use$DOCKER_CONFIG/config.json
otherwise.This module uses the Docker SDK for Python to communicate with the Docker daemon.
Examples¶
- name: Set command and arguments
community.docker.docker_swarm_service:
name: myservice
image: alpine
command: sleep
args:
- "3600"
- name: Set a bind mount
community.docker.docker_swarm_service:
name: myservice
image: alpine
mounts:
- source: /tmp/
target: /remote_tmp/
type: bind
- name: Set service labels
community.docker.docker_swarm_service:
name: myservice
image: alpine
labels:
com.example.description: "Accounting webapp"
com.example.department: "Finance"
- name: Set environment variables
community.docker.docker_swarm_service:
name: myservice
image: alpine
env:
ENVVAR1: envvar1
ENVVAR2: envvar2
env_files:
- envs/common.env
- envs/apps/web.env
- name: Set fluentd logging
community.docker.docker_swarm_service:
name: myservice
image: alpine
logging:
driver: fluentd
options:
fluentd-address: "127.0.0.1:24224"
fluentd-async-connect: "true"
tag: myservice
- name: Set restart policies
community.docker.docker_swarm_service:
name: myservice
image: alpine
restart_config:
condition: on-failure
delay: 5s
max_attempts: 3
window: 120s
- name: Set update config
community.docker.docker_swarm_service:
name: myservice
image: alpine
update_config:
parallelism: 2
delay: 10s
order: stop-first
- name: Set rollback config
community.docker.docker_swarm_service:
name: myservice
image: alpine
update_config:
failure_action: rollback
rollback_config:
parallelism: 2
delay: 10s
order: stop-first
- name: Set placement preferences
community.docker.docker_swarm_service:
name: myservice
image: alpine:edge
placement:
preferences:
- spread: node.labels.mylabel
constraints:
- node.role == manager
- engine.labels.operatingsystem == ubuntu 14.04
replicas_max_per_node: 2
- name: Set configs
community.docker.docker_swarm_service:
name: myservice
image: alpine:edge
configs:
- config_name: myconfig_name
filename: "/tmp/config.txt"
- name: Set networks
community.docker.docker_swarm_service:
name: myservice
image: alpine:edge
networks:
- mynetwork
- name: Set networks as a dictionary
community.docker.docker_swarm_service:
name: myservice
image: alpine:edge
networks:
- name: "mynetwork"
aliases:
- "mynetwork_alias"
options:
foo: bar
- name: Set secrets
community.docker.docker_swarm_service:
name: myservice
image: alpine:edge
secrets:
- secret_name: mysecret_name
filename: "/run/secrets/secret.txt"
- name: Start service with healthcheck
community.docker.docker_swarm_service:
name: myservice
image: nginx:1.13
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: Configure service resources
community.docker.docker_swarm_service:
name: myservice
image: alpine:edge
reservations:
cpus: 0.25
memory: 20M
limits:
cpus: 0.50
memory: 50M
- name: Remove service
community.docker.docker_swarm_service:
name: myservice
state: absent
Return Values¶
Common return values are documented here, the following are the fields unique to this module:
Authors¶
Dario Zanzico (@dariko)
Jason Witkowski (@jwitko)
Hannes Ljungberg (@hannseman)
Piotr Wojciechowski (@wojciechowskipiotr)