807 lines
28 KiB
Python
807 lines
28 KiB
Python
#!/usr/bin/python
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#
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# Copyright 2016 Red Hat | Ansible
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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DOCUMENTATION = '''
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module: docker_service
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short_description: Manage docker services and containers.
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version_added: "2.1"
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author: "Chris Houseknecht (@chouseknecht)"
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description:
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- Consumes docker compose to start, shutdown and scale services.
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- Works with compose versions 1 and 2.
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- Compose can be read from a docker-compose.yml (or .yaml) file or inline using the C(definition) option.
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- See the examples for more details.
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- Supports check mode.
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options:
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project_src:
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description:
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- Path to a directory containing a docker-compose.yml or docker-compose.yaml file.
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- Mutually exclusive with C(definition).
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- Required when no C(definition) is provided.
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type: path
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required: false
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project_name:
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description:
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- Provide a project name. If not provided, the project name is taken from the basename of C(project_src).
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- Required when no C(definition) is provided.
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type: str
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required: false
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files:
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description:
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- List of file names relative to C(project_src). Overrides docker-compose.yml or docker-compose.yaml.
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- Files are loaded and merged in the order given.
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type: list
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required: false
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state:
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description:
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- Desired state of the project.
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- Specifying I(present) is the same as running I(docker-compose up).
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- Specifying I(absent) is the same as running I(docker-compose down).
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choices:
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- absent
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- present
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default: present
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type: str
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required: false
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services:
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description:
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- When C(state) is I(present) run I(docker-compose up) on a subset of services.
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type: list
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required: false
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scale:
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description:
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- When C(sate) is I(present) scale services. Provide a dictionary of key/value pairs where the key
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is the name of the service and the value is an integer count for the number of containers.
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type: complex
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required: false
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dependencies:
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description:
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- When C(state) is I(present) specify whether or not to include linked services.
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type: bool
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required: false
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default: true
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definition:
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description:
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- Provide docker-compose yaml describing one or more services, networks and volumes.
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- Mutually exclusive with C(project_src) and C(project_files).
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type: complex
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required: false
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hostname_check:
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description:
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- Whether or not to check the Docker daemon's hostname against the name provided in the client certificate.
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type: bool
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required: false
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default: false
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recreate:
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description:
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- By default containers will be recreated when their configuration differs from the service definition.
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- Setting to I(never) ignores configuration differences and leaves existing containers unchanged.
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- Setting to I(always) forces recreation of all existing containers.
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type: str
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required: false
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choices:
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- always
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- never
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- smart
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default: smart
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build:
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description:
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- Whether or not to build images before starting containers.
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- Missing images will always be built.
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- If an image is present and C(build) is false, the image will not be built.
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- If an image is present and C(build) is true, the image will be built.
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type: bool
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required: false
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default: true
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remove_images:
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description:
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- Use with state I(absent) to remove the all images or only local images.
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type: str
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required: false
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default: null
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remove_volumes:
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description:
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- Use with state I(absent) to remove data volumes.
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required: false
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type: bool
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default: false
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stopped:
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description:
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- Use with state I(present) to leave the containers in an exited or non-running state.
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required: false
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type: bool
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default: false
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restarted:
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description:
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- Use with state I(present) to restart all containers.
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required: false
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type: bool
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default: false
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debug:
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description:
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- Include I(actions) in the return values.
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required: false
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type: bool
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default: false
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extends_documentation_fragment:
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- docker
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requirements:
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- "python >= 2.6"
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- "docker-compose >= 1.7.0"
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- "Docker API >= 1.20"
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- "PyYAML >= 3.11"
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'''
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EXAMPLES = '''
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# Examples use the django example at U(https://docs.docker.com/compose/django/). Follow it to create the flask
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# directory
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- name: Run using a project directory
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hosts: localhost
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connection: local
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gather_facts: no
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tasks:
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- docker_service:
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project_src: flask
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state: absent
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- docker_service:
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project_src: flask
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register: output
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- debug: var=output
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- docker_service:
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project_src: flask
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build: no
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register: output
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- debug: var=output
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- assert:
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that: "not output.changed "
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- docker_service:
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project_src: flask
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build: no
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stopped: true
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register: output
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- debug: var=output
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- assert:
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that:
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- "not web.flask_web_1.state.running"
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- "not db.flask_db_1.state.running"
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- docker_service:
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project_src: flask
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build: no
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restarted: true
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register: output
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- debug: var=output
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- assert:
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that:
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- "web.flask_web_1.state.running"
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- "db.flask_db_1.state.running"
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- name: Scale the web service to 2
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hosts: localhost
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connection: local
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gather_facts: no
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tasks:
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- docker_service:
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project_src: flask
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scale:
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web: 2
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register: output
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- debug: var=output
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- name: Run with inline v2 compose
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hosts: localhost
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connection: local
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gather_facts: no
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tasks:
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- docker_service:
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project_src: flask
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state: absent
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- docker_service:
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project_name: flask
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definition:
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version: '2'
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services:
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db:
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image: postgres
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web:
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build: "{{ playbook_dir }}/flask"
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command: "python manage.py runserver 0.0.0.0:8000"
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volumes:
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- "{{ playbook_dir }}/flask:/code"
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ports:
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- "8000:8000"
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depends_on:
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- db
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register: output
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- debug: var=output
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- assert:
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that:
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- "web.flask_web_1.state.running"
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- "db.flask_db_1.state.running"
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- name: Run with inline v1 compose
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hosts: localhost
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connection: local
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gather_facts: no
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tasks:
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- docker_service:
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project_src: flask
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state: absent
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- docker_service:
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project_name: flask
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definition:
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db:
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image: postgres
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web:
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build: "{{ playbook_dir }}/flask"
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command: "python manage.py runserver 0.0.0.0:8000"
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volumes:
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- "{{ playbook_dir }}/flask:/code"
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ports:
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- "8000:8000"
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links:
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- db
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register: output
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- debug: var=output
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- assert:
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that:
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- "web.flask_web_1.state.running"
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- "db.flask_db_1.state.running"
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'''
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RETURN = '''
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service:
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description: Name of the service.
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returned: success
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type: complex
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contains:
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container_name:
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description: Name of the container. Format is I(project_service_#).
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returned: success
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type: complex
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contains:
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cmd:
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description: One or more commands to be executed in the container.
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returned: success
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type: list
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example: ["postgres"]
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image:
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description: Name of the image from which the container was built.
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returned: success
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type: str
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example: postgres
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labels:
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description: Meta data assigned to the container.
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returned: success
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type: complex
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example: {...}
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networks:
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description: Contains a dictionary for each network to which the container is a member.
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returned: success
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type: complex
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contains:
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IPAddress:
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description: The IP address assigned to the container.
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returned: success
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type: string
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example: 172.17.0.2
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IPPrefixLen:
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description: Number of bits used by the subnet.
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returned: success
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type: int
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example: 16
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aliases:
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description: Aliases assigned to the container by the network.
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returned: success
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type: list
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example: ['db']
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globalIPv6:
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description: IPv6 address assigned to the container.
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returned: success
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type: str
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example: ''
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globalIPv6PrefixLen:
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description: IPv6 subnet length.
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returned: success
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type: int
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example: 0
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links:
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description: List of container names to which this container is linked.
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returned: success
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type: list
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example: null
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macAddress:
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description: Mac Address assigned to the virtual NIC.
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returned: success
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type: str
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example: "02:42:ac:11:00:02"
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state:
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description: Information regarding the current disposition of the container.
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returned: success
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type: complex
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contains:
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running:
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description: Whether or not the container is up with a running process.
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returned: success
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type: bool
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example: true
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status:
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description: Description of the running state.
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returned: success
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type: str
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example: running
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actions:
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description: Provides the actions to be taken on each service as determined by compose.
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returned: when in check mode or I(debug) true
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type: complex
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contains:
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service_name:
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description: Name of the service.
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returned: always
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type: complex
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contains:
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action:
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description: A descriptive name of the action to be performed on the set of containers
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within the service.
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returned: always
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type: list
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contains:
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id:
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description: the container's long ID
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returned: always
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type: string
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name:
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description: the container's name
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returned: always
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type: string
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short_id:
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description: the container's short ID
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returned: always
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type: string
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'''
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HAS_YAML = True
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HAS_YAML_EXC = None
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HAS_COMPOSE = True
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HAS_COMPOSE_EXC = None
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MINIMUM_COMPOSE_VERSION = '1.7.0'
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try:
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import yaml
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except ImportError as exc:
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HAS_YAML = False
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HAS_YAML_EXC = str(exc)
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from distutils.version import LooseVersion
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from ansible.module_utils.basic import *
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try:
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from compose import __version__ as compose_version
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from compose.cli.command import project_from_options
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from compose.service import ConvergenceStrategy
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from compose.cli.main import convergence_strategy_from_opts, build_action_from_opts, image_type_from_opt
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except ImportError as exc:
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HAS_COMPOSE = False
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HAS_COMPOSE_EXC = str(exc)
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from ansible.module_utils.docker_common import *
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AUTH_PARAM_MAPPING = {
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u'docker_host': u'--host',
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u'tls': u'--tls',
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u'cacert_path': u'--tlscacert',
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u'cert_path': u'--tlscert',
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u'key_path': u'--tlskey',
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u'tls_verify': u'--tlsverify'
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}
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class ContainerManager(DockerBaseClass):
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def __init__(self, client):
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super(ContainerManager, self).__init__()
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self.client = client
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self.project_src = None
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self.files = None
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self.project_name = None
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self.state = None
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self.definition = None
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self.hostname_check = None
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self.timeout = None
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self.remove_images = None
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self.remove_orphans = None
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self.remove_volumes = None
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self.stopped = None
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self.restarted = None
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self.recreate = None
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self.build = None
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self.dependencies = None
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self.services = None
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self.scale = None
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self.debug = None
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for key, value in client.module.params.items():
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setattr(self, key, value)
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self.check_mode = client.check_mode
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if not self.debug:
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self.debug = client.module._debug
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self.options = dict()
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self.options.update(self._get_auth_options())
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self.options[u'--skip-hostname-check'] = (not self.hostname_check)
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if self.project_name:
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self.options[u'--project-name'] = self.project_name
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if self.files:
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self.options[u'--file'] = self.files
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if not HAS_COMPOSE:
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self.client.fail("Unable to load docker-compose. Try `pip install docker-compose`. Error: %s" % HAS_COMPOSE_EXC)
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if LooseVersion(compose_version) < LooseVersion(MINIMUM_COMPOSE_VERSION):
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self.client.fail("Found docker-compose version %s. Minimum required version is %s. "
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"Upgrade docker-compose to a min version of %s." %
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(compose_version, MINIMUM_COMPOSE_VERSION, MINIMUM_COMPOSE_VERSION))
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self.log("options: ")
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self.log(self.options, pretty_print=True)
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if self.definition:
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if not HAS_YAML:
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self.client.fail("Unable to load yaml. Try `pip install PyYAML`. Error: %s" % HAS_YAML_EXC)
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if not self.project_name:
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self.client.fail("Parameter error - project_name required when providing definition.")
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self.project_src = tempfile.mkdtemp(prefix="ansible")
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compose_file = os.path.join(self.project_src, "docker-compose.yml")
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try:
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self.log('writing: ')
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self.log(yaml.dump(self.definition, default_flow_style=False))
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with open(compose_file, 'w') as f:
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f.write(yaml.dump(self.definition, default_flow_style=False))
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except Exception as exc:
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self.client.fail("Error writing to %s - %s" % (compose_file, str(exc)))
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else:
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if not self.project_src:
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self.client.fail("Parameter error - project_src required.")
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try:
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self.log("project_src: %s" % self.project_src)
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self.project = project_from_options(self.project_src, self.options)
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except Exception as exc:
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self.client.fail("Configuration error - %s" % str(exc))
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def exec_module(self):
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result = dict()
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if self.state == 'present':
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result = self.cmd_up()
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elif self.state == 'absent':
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result = self.cmd_down()
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if self.definition:
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compose_file = os.path.join(self.project_src, "docker-compose.yml")
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self.log("removing %s" % compose_file)
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os.remove(compose_file)
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self.log("removing %s" % self.project_src)
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os.rmdir(self.project_src)
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if not self.check_mode and not self.debug and result.get('actions'):
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result.pop('actions')
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return result
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def _get_auth_options(self):
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options = dict()
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for key, value in self.client.auth_params.items():
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if value is not None:
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option = AUTH_PARAM_MAPPING.get(key)
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if option:
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options[option] = value
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return options
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def cmd_up(self):
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start_deps = self.dependencies
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service_names = self.services
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detached = True
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result = dict(changed=False, actions=dict(), ansible_facts=dict())
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up_options = {
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u'--no-recreate': False,
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u'--build': self.build,
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u'--no-build': False,
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u'--no-deps': False,
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u'--force-recreate': False,
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}
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if self.recreate == 'never':
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up_options[u'--no-recreate'] = True
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elif self.recreate == 'always':
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up_options[u'--force-recreate'] = True
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if self.remove_orphans:
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up_options[u'--remove-orphans'] = True
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converge = convergence_strategy_from_opts(up_options)
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self.log("convergence strategy: %s" % converge)
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for service in self.project.services:
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if not service_names or service.name in service_names:
|
|
plan = service.convergence_plan(strategy=converge)
|
|
if plan.action != 'noop':
|
|
result['changed'] = True
|
|
if self.debug or self.check_mode:
|
|
result['actions'][service.name] = dict()
|
|
result['actions'][service.name][plan.action] = []
|
|
for container in plan.containers:
|
|
result['actions'][service.name][plan.action].append(dict(
|
|
id=container.id,
|
|
name=container.name,
|
|
short_id=container.short_id,
|
|
))
|
|
|
|
if not self.check_mode and result['changed']:
|
|
try:
|
|
self.project.up(
|
|
service_names=service_names,
|
|
start_deps=start_deps,
|
|
strategy=converge,
|
|
do_build=build_action_from_opts(up_options),
|
|
detached=detached,
|
|
remove_orphans=self.remove_orphans)
|
|
except Exception as exc:
|
|
self.client.fail("Error bring %s up - %s" % (self.project.name, str(exc)))
|
|
|
|
if self.stopped:
|
|
result.update(self.cmd_stop(service_names))
|
|
|
|
if self.restarted:
|
|
result.update(self.cmd_restart(service_names))
|
|
|
|
if self.scale:
|
|
result.update(self.cmd_scale())
|
|
|
|
for service in self.project.services:
|
|
result['ansible_facts'][service.name] = dict()
|
|
for container in service.containers(stopped=True):
|
|
inspection = container.inspect()
|
|
# pare down the inspection data to the most useful bits
|
|
facts = dict(
|
|
cmd=[],
|
|
labels=dict(),
|
|
image=None,
|
|
state=dict(
|
|
running=None,
|
|
status=None
|
|
),
|
|
networks=dict()
|
|
)
|
|
if inspection['Config'].get('Cmd', None) is not None:
|
|
facts['cmd'] = inspection['Config']['Cmd']
|
|
if inspection['Config'].get('Labels', None) is not None:
|
|
facts['labels'] = inspection['Config']['Labels']
|
|
if inspection['Config'].get('Image', None) is not None:
|
|
facts['image'] = inspection['Config']['Image']
|
|
if inspection['State'].get('Running', None) is not None:
|
|
facts['state']['running'] = inspection['State']['Running']
|
|
if inspection['State'].get('Status', None) is not None:
|
|
facts['state']['status'] = inspection['State']['Status']
|
|
|
|
if inspection.get('NetworkSettings') and inspection['NetworkSettings'].get('Networks'):
|
|
networks = inspection['NetworkSettings']['Networks']
|
|
for key in networks:
|
|
facts['networks'][key] = dict(
|
|
aliases=[],
|
|
globalIPv6=None,
|
|
globalIPv6PrefixLen=0,
|
|
IPAddress=None,
|
|
IPPrefixLen=0,
|
|
links=None,
|
|
macAddress=None,
|
|
)
|
|
if networks[key].get('Aliases', None) is not None:
|
|
facts['networks'][key]['aliases'] = networks[key]['Aliases']
|
|
if networks[key].get('GlobalIPv6Address', None) is not None:
|
|
facts['networks'][key]['globalIPv6'] = networks[key]['GlobalIPv6Address']
|
|
if networks[key].get('GlobalIPv6PrefixLen', None) is not None:
|
|
facts['networks'][key]['globalIPv6PrefixLen'] = networks[key]['GlobalIPv6PrefixLen']
|
|
if networks[key].get('IPAddress', None) is not None:
|
|
facts['networks'][key]['IPAddress'] = networks[key]['IPAddress']
|
|
if networks[key].get('IPPrefixLen', None) is not None:
|
|
facts['networks'][key]['IPPrefixLen'] = networks[key]['IPPrefixLen']
|
|
if networks[key].get('Links', None) is not None:
|
|
facts['networks'][key]['links'] = networks[key]['Links']
|
|
if networks[key].get('MacAddress', None) is not None:
|
|
facts['networks'][key]['macAddress'] = networks[key]['MacAddress']
|
|
|
|
result['ansible_facts'][service.name][container.name] = facts
|
|
|
|
return result
|
|
|
|
def cmd_down(self):
|
|
result = dict(
|
|
changed=False,
|
|
actions=dict(),
|
|
)
|
|
|
|
for service in self.project.services:
|
|
containers = service.containers(stopped=True)
|
|
if len(containers):
|
|
result['changed'] = True
|
|
if self.debug or self.check_mode:
|
|
result['actions'][service.name] = dict()
|
|
result['actions'][service.name]['deleted'] = [container.name for container in containers]
|
|
|
|
if not self.check_mode and result['changed']:
|
|
image_type = image_type_from_opt('--rmi', self.remove_images)
|
|
try:
|
|
self.project.down(image_type, self.remove_volumes, self.remove_orphans)
|
|
except Exception as exc:
|
|
self.client.fail("Error bringing %s down - %s" % (self.project.name, str(exc)))
|
|
|
|
return result
|
|
|
|
def cmd_stop(self, service_names):
|
|
result = dict(
|
|
changed=False,
|
|
actions=dict()
|
|
)
|
|
for service in self.project.services:
|
|
if not service_names or service.name in service_names:
|
|
result['actions'][service.name] = dict()
|
|
result['actions'][service.name]['stop'] = []
|
|
for container in service.containers(stopped=False):
|
|
result['changed'] = True
|
|
if self.debug:
|
|
result['actions'][service.name]['stop'].append(dict(
|
|
id=container.id,
|
|
name=container.name,
|
|
short_id=container.short_id,
|
|
))
|
|
|
|
if not self.check_mode and result['changed']:
|
|
try:
|
|
self.project.stop(service_names=service_names)
|
|
except Exception as exc:
|
|
self.client.fail("Error stopping services for %s - %s" % (self.project.name, str(exc)))
|
|
|
|
return result
|
|
|
|
def cmd_restart(self, service_names):
|
|
result = dict(
|
|
changed=False,
|
|
actions=dict()
|
|
)
|
|
|
|
for service in self.project.services:
|
|
if not service_names or service.name in service_names:
|
|
result['actions'][service.name] = dict()
|
|
result['actions'][service.name]['restart'] = []
|
|
for container in service.containers(stopped=True):
|
|
result['changed'] = True
|
|
if self.debug or self.check_mode:
|
|
result['actions'][service.name]['restart'].append(dict(
|
|
id=container.id,
|
|
name=container.name,
|
|
short_id=container.short_id,
|
|
))
|
|
|
|
if not self.check_mode and result['changed']:
|
|
try:
|
|
self.project.restart(service_names=service_names)
|
|
except Exception as exc:
|
|
self.client.fail("Error restarting services for %s - %s" % (self.project.name, str(exc)))
|
|
|
|
return result
|
|
|
|
def cmd_scale(self):
|
|
result = dict(
|
|
changed=False,
|
|
actions=dict()
|
|
)
|
|
|
|
for service in self.project.services:
|
|
if service.name in self.scale:
|
|
result['actions'][service.name] = dict()
|
|
containers = service.containers(stopped=True)
|
|
if len(containers) != self.scale[service.name]:
|
|
result['changed'] = True
|
|
if self.debug or self.check_mode:
|
|
result['actions'][service.name]['scale'] = self.scale[service.name] - len(containers)
|
|
if not self.check_mode:
|
|
try:
|
|
service.scale(self.scale[service.name])
|
|
except Exception as exc:
|
|
self.client.fail("Error scaling %s - %s" % (service.name, str(exc)))
|
|
return result
|
|
|
|
|
|
def main():
|
|
argument_spec = dict(
|
|
project_src=dict(type='path'),
|
|
project_name=dict(type='str',),
|
|
files=dict(type='list'),
|
|
state=dict(type='str', choices=['absent', 'present'], default='present'),
|
|
definition=dict(type='dict'),
|
|
hostname_check=dict(type='bool', default=False),
|
|
recreate=dict(type='str', choices=['always','never','smart'], default='smart'),
|
|
build=dict(type='bool', default=True),
|
|
remove_images=dict(type='str', choices=['all', 'local']),
|
|
remove_volumes=dict(type='bool', default=False),
|
|
remove_orphans=dict(type='bool', default=False),
|
|
stopped=dict(type='bool', default=False),
|
|
restarted=dict(type='bool', default=False),
|
|
scale=dict(type='dict'),
|
|
services=dict(type='list'),
|
|
dependencies=dict(type='bool', default=True),
|
|
debug=dict(type='bool', default=False)
|
|
)
|
|
|
|
mutually_exclusive = [
|
|
('definition', 'project_src'),
|
|
('definition', 'files')
|
|
]
|
|
|
|
client = AnsibleDockerClient(
|
|
argument_spec=argument_spec,
|
|
mutually_exclusive=mutually_exclusive,
|
|
supports_check_mode=True
|
|
)
|
|
|
|
result = ContainerManager(client).exec_module()
|
|
client.module.exit_json(**result)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|