Ansible deployment of the Kolla containers
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#!/usr/bin/env python
# Copyright 2015 Sam Yaple
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# FIXME(yoctozepto): this module does *not* validate "common_options" which are
# a hacky way to seed most usages of kolla_docker in kolla-ansible ansible
# playbooks - caution has to be exerted when setting "common_options"
import traceback
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.kolla_docker_worker import DockerWorker
DOCUMENTATION = '''
---
module: kolla_docker
short_description: Module for controlling Docker
description:
- A module targeting at controlling Docker as used by Kolla.
options:
common_options:
description:
- A dict containing common params such as login info
required: False
type: dict
default: dict()
action:
description:
- The action the module should take
required: True
type: str
choices:
- compare_container
- compare_image
- create_volume
- ensure_image
- get_container_env
- get_container_state
- pull_image
- remove_container
- remove_image
- remove_volume
- recreate_or_restart_container
- restart_container
- start_container
- stop_container
- stop_container_and_remove_container
api_version:
description:
- The version of the api for docker-py to use when contacting docker
required: False
type: str
default: auto
auth_email:
description:
- The email address used to authenticate
required: False
type: str
auth_password:
description:
- The password used to authenticate
required: False
type: str
auth_registry:
description:
- The registry to authenticate
required: False
type: str
auth_username:
description:
- The username used to authenticate
required: False
type: str
command:
description:
- The command to execute in the container
required: False
type: str
detach:
description:
- Detach from the container after it is created
required: False
default: True
type: bool
name:
description:
- Name of the container or volume to manage
required: False
type: str
environment:
description:
- The environment to set for the container
required: False
type: dict
image:
description:
- Name of the docker image
required: False
type: str
ipc_mode:
description:
- Set docker ipc namespace
required: False
type: str
default: None
choices:
- host
cap_add:
description:
- Add capabilities to docker container
required: False
type: list
default: list()
security_opt:
description:
- Set container security profile
required: False
type: list
default: list()
labels:
description:
- List of labels to apply to container
required: False
type: dict
default: dict()
pid_mode:
description:
- Set docker pid namespace
required: False
type: str
default: None
choices:
- host
cgroupns_mode:
description:
- Set docker cgroups namespace (default depends on Docker config)
- Supported only with Docker 20.10 (Docker API 1.41) and later
required: False
type: str
default: None
choices:
- private
- host
privileged:
description:
- Set the container to privileged
required: False
default: False
type: bool
remove_on_exit:
description:
- When not detaching from container, remove on successful exit
required: False
default: True
type: bool
restart_policy:
description:
- When docker restarts the container (does not affect checks)
required: False
type: str
choices:
- no
- on-failure
- always
- unless-stopped
restart_retries:
description:
- How many times to attempt a restart if 'on-failure' policy is set
type: int
default: 10
tmpfs:
description:
- List of paths to mount as tmpfs.
required: False
type: list
volumes:
description:
- Set volumes for docker to use
required: False
type: list
volumes_from:
description:
- Name or id of container(s) to use volumes from
required: True
type: list
state:
description:
- Check container status
required: False
type: str
choices:
- running
- exited
- paused
tty:
description:
- Allocate TTY to container
required: False
default: False
type: bool
client_timeout:
description:
- Docker client timeout in seconds
required: False
default: 120
type: int
healthcheck:
description:
- Container healthcheck configuration
required: False
default: dict()
type: dict
author: Sam Yaple
'''
EXAMPLES = '''
- hosts: kolla_docker
tasks:
- name: Start container
kolla_docker:
image: ubuntu
name: test_container
action: start_container
- name: Remove container
kolla_docker:
name: test_container
action: remove_container
- name: Pull image without starting container
kolla_docker:
action: pull_image
image: private-registry.example.com:5000/ubuntu
- name: Create named volume
kolla_docker:
action: create_volume
name: name_of_volume
- name: Remove named volume
kolla_docker:
action: remove_volume
name: name_of_volume
- name: Remove image
kolla_docker:
action: remove_image
image: name_of_image
'''
def generate_module():
# NOTE(jeffrey4l): add empty string '' to choices let us use
# pid_mode: "{{ service.pid_mode | default ('') }}" in yaml
argument_spec = dict(
common_options=dict(required=False, type='dict', default=dict()),
action=dict(required=True, type='str',
choices=['compare_container',
'compare_image',
'create_volume',
'ensure_image',
'get_container_env',
'get_container_state',
'pull_image',
'recreate_or_restart_container',
'remove_container',
'remove_image',
'remove_volume',
'restart_container',
'start_container',
'stop_container',
'stop_and_remove_container']),
api_version=dict(required=False, type='str', default='auto'),
auth_email=dict(required=False, type='str'),
auth_password=dict(required=False, type='str', no_log=True),
auth_registry=dict(required=False, type='str'),
auth_username=dict(required=False, type='str'),
command=dict(required=False, type='str'),
detach=dict(required=False, type='bool', default=True),
labels=dict(required=False, type='dict', default=dict()),
name=dict(required=False, type='str'),
environment=dict(required=False, type='dict'),
healthcheck=dict(required=False, type='dict'),
image=dict(required=False, type='str'),
ipc_mode=dict(required=False, type='str', choices=['',
'host',
'private',
'shareable']),
cap_add=dict(required=False, type='list', default=list()),
security_opt=dict(required=False, type='list', default=list()),
pid_mode=dict(required=False, type='str', choices=['host', '']),
cgroupns_mode=dict(required=False, type='str',
choices=['private', 'host']),
privileged=dict(required=False, type='bool', default=False),
graceful_timeout=dict(required=False, type='int', default=10),
remove_on_exit=dict(required=False, type='bool', default=True),
restart_policy=dict(required=False, type='str', choices=[
'no',
'on-failure',
'always',
'unless-stopped']),
restart_retries=dict(required=False, type='int', default=10),
state=dict(required=False, type='str', default='running',
choices=['running',
'exited',
'paused']),
tls_verify=dict(required=False, type='bool', default=False),
tls_cert=dict(required=False, type='str'),
tls_key=dict(required=False, type='str'),
tls_cacert=dict(required=False, type='str'),
tmpfs=dict(required=False, type='list'),
volumes=dict(required=False, type='list'),
volumes_from=dict(required=False, type='list'),
dimensions=dict(required=False, type='dict', default=dict()),
tty=dict(required=False, type='bool', default=False),
client_timeout=dict(required=False, type='int', default=120),
ignore_missing=dict(required=False, type='bool', default=False),
)
required_if = [
['action', 'pull_image', ['image']],
['action', 'start_container', ['image', 'name']],
['action', 'compare_container', ['name']],
['action', 'compare_image', ['name']],
['action', 'create_volume', ['name']],
['action', 'ensure_image', ['image']],
['action', 'get_container_env', ['name']],
['action', 'get_container_state', ['name']],
['action', 'recreate_or_restart_container', ['name']],
['action', 'remove_container', ['name']],
['action', 'remove_image', ['image']],
['action', 'remove_volume', ['name']],
['action', 'restart_container', ['name']],
['action', 'stop_container', ['name']],
['action', 'stop_and_remove_container', ['name']],
]
module = AnsibleModule(
argument_spec=argument_spec,
required_if=required_if,
bypass_checks=False
)
new_args = module.params.pop('common_options', dict())
# NOTE(jeffrey4l): merge the environment
env = module.params.pop('environment', dict())
if env:
new_args['environment'].update(env)
for key, value in module.params.items():
if key in new_args and value is None:
continue
new_args[key] = value
# if pid_mode = ""/None/False, remove it
if not new_args.get('pid_mode', False):
new_args.pop('pid_mode', None)
# if ipc_mode = ""/None/False, remove it
if not new_args.get('ipc_mode', False):
new_args.pop('ipc_mode', None)
module.params = new_args
return module
def main():
module = generate_module()
dw = None
try:
dw = DockerWorker(module)
# TODO(inc0): We keep it bool to have ansible deal with consistent
# types. If we ever add method that will have to return some
# meaningful data, we need to refactor all methods to return dicts.
result = bool(getattr(dw, module.params.get('action'))())
module.exit_json(changed=dw.changed, result=result, **dw.result)
except Exception:
module.fail_json(changed=True, msg=repr(traceback.format_exc()),
**getattr(dw, 'result', {}))
if __name__ == '__main__':
main()