Add new module to create/update a docker swarm. (#38280)
* Add new module to create/update a docker swarm. * Fix ansible-test sanity * Fix requirements * Fix requirements * Add tag for author * Test integration test. * Fix main.yml * Add linux arch * Add template * Fix test result * Integration test to create/remove a swarm manager * fix join test * Downgrade docker-py * fix rhel * Fix review documentation. * Fix whitespace * Check docker installation. * test docker install * check * Remove docker socket * Fix docker install * Fix sanity test * Rebase * Add docker_swarm maintainer * Fix review * Fix new version. * Add docker default values * Fix description. * Reworked documentation * Fix YAML error * Rebase * Fix example for update state. * Fix idempotent states. Fix states: present/absent. * Fix sanity * Fix variables sanity * Update example for absent state. * fix sanity * Wrap the contents of error message in to_native. Co-authored by: Dag Wieers <dag@wieers.com>
This commit is contained in:
Thierry BOUVET
Sam Doran
parent
8a0a787405
commit
8b9fe42c72
8 changed files with 697 additions and 0 deletions
520
lib/ansible/modules/cloud/docker/docker_swarm.py
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520
lib/ansible/modules/cloud/docker/docker_swarm.py
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#!/usr/bin/python
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# Copyright 2016 Red Hat | Ansible
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'}
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DOCUMENTATION = '''
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---
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module: docker_swarm
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short_description: Manage Swarm cluster
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version_added: "2.7"
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description:
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- Create a new Swarm cluster.
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- Add/Remove nodes or managers to an existing cluster.
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options:
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advertise_addr:
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description:
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- Externally reachable address advertised to other nodes.
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- This can either be an address/port combination
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in the form C(192.168.1.1:4567), or an interface followed by a
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port number, like C(eth0:4567).
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- If the port number is omitted,
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the port number from the listen address is used.
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- If C(advertise_addr) is not specified, it will be automatically
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detected when possible.
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listen_addr:
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description:
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- Listen address used for inter-manager communication.
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- This can either be an address/port combination in the form
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C(192.168.1.1:4567), or an interface followed by a port number,
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like C(eth0:4567).
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- If the port number is omitted, the default swarm listening port
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is used.
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default: 0.0.0.0:2377
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force:
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description:
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- Use with state C(present) to force creating a new Swarm, even if already part of one.
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- Use with state C(absent) to Leave the swarm even if this node is a manager.
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type: bool
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default: 'no'
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state:
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description:
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- Set to C(present), to create/update a new cluster.
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- Set to C(join), to join an existing cluster.
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- Set to C(absent), to leave an existing cluster.
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- Set to C(remove), to remove an absent node from the cluster.
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- Set to C(inspect) to display swarm informations.
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required: true
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default: present
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choices:
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- present
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- join
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- absent
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- remove
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- inspect
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node_id:
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description:
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- Swarm id of the node to remove.
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- Used with I(state=remove).
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join_token:
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description:
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- Swarm token used to join a swarm cluster.
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- Used with I(state=join).
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remote_addrs:
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description:
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- Remote address of a manager to connect to.
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- Used with I(state=join).
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task_history_retention_limit:
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description:
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- Maximum number of tasks history stored.
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- Docker default value is C(5).
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snapshot_interval:
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description:
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- Number of logs entries between snapshot.
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- Docker default value is C(10000).
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keep_old_snapshots:
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description:
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- Number of snapshots to keep beyond the current snapshot.
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- Docker default value is C(0).
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log_entries_for_slow_followers:
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description:
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- Number of log entries to keep around to sync up slow followers after a snapshot is created.
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heartbeat_tick:
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description:
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- Amount of ticks (in seconds) between each heartbeat.
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- Docker default value is C(1s).
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election_tick:
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description:
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- Amount of ticks (in seconds) needed without a leader to trigger a new election.
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- Docker default value is C(10s).
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dispatcher_heartbeat_period:
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description:
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- The delay for an agent to send a heartbeat to the dispatcher.
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- Docker default value is C(5s).
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node_cert_expiry:
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description:
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- Automatic expiry for nodes certificates.
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- Docker default value is C(3months).
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name:
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description:
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- The name of the swarm.
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labels:
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description:
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- User-defined key/value metadata.
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signing_ca_cert:
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description:
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- The desired signing CA certificate for all swarm node TLS leaf certificates, in PEM format.
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signing_ca_key:
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description:
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- The desired signing CA key for all swarm node TLS leaf certificates, in PEM format.
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ca_force_rotate:
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description:
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- An integer whose purpose is to force swarm to generate a new signing CA certificate and key,
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if none have been specified.
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- Docker default value is C(0).
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autolock_managers:
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description:
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- If set, generate a key and use it to lock data stored on the managers.
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- Docker default value is C(no).
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type: bool
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rotate_worker_token:
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description: Rotate the worker join token.
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type: bool
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default: 'no'
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rotate_manager_token:
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description: Rotate the manager join token.
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type: bool
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default: 'no'
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extends_documentation_fragment:
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- docker
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requirements:
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- python >= 2.7
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- Docker API >= 1.35
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author:
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- Thierry Bouvet (@tbouvet)
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'''
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EXAMPLES = '''
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- name: Init a new swarm with default parameters
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docker_swarm:
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state: present
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advertise_addr: 192.168.1.1
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- name: Update swarm configuration
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docker_swarm:
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state: present
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election_tick: 5
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- name: Add nodes
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docker_swarm:
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state: join
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advertise_addr: 192.168.1.2
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join_token: SWMTKN-1--xxxxx
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remote_addrs: [ '192.168.1.1:2377' ]
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- name: Leave swarm for a node
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docker_swarm:
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state: absent
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- name: Remove a swarm manager
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docker_swarm:
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state: absent
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force: true
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- name: Remove node from swarm
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docker_swarm:
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state: remove
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node_id: mynode
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- name: Inspect swarm
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docker_swarm:
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state: inspect
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register: swarm_info
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'''
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RETURN = '''
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swarm_facts:
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description: Informations about swarm.
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returned: success
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type: complex
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contains:
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JoinTokens:
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description: Tokens to connect to the Swarm.
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returned: success
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type: complex
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contains:
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Worker:
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description: Token to create a new I(worker) node
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returned: success
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type: str
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example: SWMTKN-1--xxxxx
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Manager:
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description: Token to create a new I(manager) node
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returned: success
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type: str
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example: SWMTKN-1--xxxxx
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actions:
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description: Provides the actions done on the swarm.
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returned: when action failed.
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type: list
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example: "['This cluster is already a swarm cluster']"
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'''
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import json
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from time import sleep
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try:
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from docker.errors import APIError
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except ImportError:
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# missing docker-py handled in ansible.module_utils.docker
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pass
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from ansible.module_utils.docker_common import AnsibleDockerClient, DockerBaseClass
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from ansible.module_utils._text import to_native
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class TaskParameters(DockerBaseClass):
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def __init__(self, client):
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super(TaskParameters, self).__init__()
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self.state = None
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self.advertise_addr = None
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self.listen_addr = None
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self.force_new_cluster = None
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self.remote_addrs = None
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self.join_token = None
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# Spec
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self.snapshot_interval = None
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self.task_history_retention_limit = None
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self.keep_old_snapshots = None
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self.log_entries_for_slow_followers = None
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self.heartbeat_tick = None
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self.election_tick = None
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self.dispatcher_heartbeat_period = None
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self.node_cert_expiry = None
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self.external_cas = None
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self.name = None
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self.labels = None
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self.log_driver = None
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self.signing_ca_cert = None
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self.signing_ca_key = None
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self.ca_force_rotate = None
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self.autolock_managers = None
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self.rotate_worker_token = None
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self.rotate_manager_token = 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.update_parameters(client)
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def update_parameters(self, client):
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self.spec = client.create_swarm_spec(
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snapshot_interval=self.snapshot_interval,
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task_history_retention_limit=self.task_history_retention_limit,
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keep_old_snapshots=self.keep_old_snapshots,
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log_entries_for_slow_followers=self.log_entries_for_slow_followers,
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heartbeat_tick=self.heartbeat_tick,
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election_tick=self.election_tick,
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dispatcher_heartbeat_period=self.dispatcher_heartbeat_period,
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node_cert_expiry=self.node_cert_expiry,
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name=self.name,
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labels=self.labels,
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signing_ca_cert=self.signing_ca_cert,
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signing_ca_key=self.signing_ca_key,
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ca_force_rotate=self.ca_force_rotate,
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autolock_managers=self.autolock_managers,
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log_driver=self.log_driver
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)
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class SwarmManager(DockerBaseClass):
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def __init__(self, client, results):
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super(SwarmManager, self).__init__()
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self.client = client
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self.results = results
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self.check_mode = self.client.check_mode
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self.parameters = TaskParameters(client)
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def __call__(self):
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choice_map = {
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"present": self.init_swarm,
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"join": self.join,
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"absent": self.leave,
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"remove": self.remove,
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"inspect": self.inspect_swarm
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}
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choice_map.get(self.parameters.state)()
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def __isSwarmManager(self):
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try:
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data = self.client.inspect_swarm()
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json_str = json.dumps(data, ensure_ascii=False)
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self.swarm_info = json.loads(json_str)
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return True
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except APIError:
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return False
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def inspect_swarm(self):
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try:
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data = self.client.inspect_swarm()
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json_str = json.dumps(data, ensure_ascii=False)
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self.swarm_info = json.loads(json_str)
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self.results['changed'] = False
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self.results['swarm_facts'] = self.swarm_info
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except APIError:
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return
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def init_swarm(self):
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if self.__isSwarmManager():
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self.__update_swarm()
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return
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try:
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if self.parameters.advertise_addr is None:
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self.client.fail(msg="advertise_addr is required to initialize a swarm cluster.")
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self.client.init_swarm(
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advertise_addr=self.parameters.advertise_addr, listen_addr=self.parameters.listen_addr,
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force_new_cluster=self.parameters.force_new_cluster, swarm_spec=self.parameters.spec)
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except APIError as exc:
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self.client.fail(msg="Can not create a new Swarm Cluster: %s" % to_native(exc))
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self.__isSwarmManager()
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self.results['actions'].append("New Swarm cluster created: %s" % (self.swarm_info['ID']))
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self.results['changed'] = True
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self.results['swarm_facts'] = {u'JoinTokens': self.swarm_info['JoinTokens']}
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def __update_spec(self, spec):
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if (self.parameters.node_cert_expiry is None):
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self.parameters.node_cert_expiry = spec['CAConfig']['NodeCertExpiry']
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if (self.parameters.dispatcher_heartbeat_period is None):
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self.parameters.dispatcher_heartbeat_period = spec['Dispatcher']['HeartbeatPeriod']
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if (self.parameters.snapshot_interval is None):
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self.parameters.snapshot_interval = spec['Raft']['SnapshotInterval']
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if (self.parameters.keep_old_snapshots is None):
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self.parameters.keep_old_snapshots = spec['Raft']['KeepOldSnapshots']
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if (self.parameters.heartbeat_tick is None):
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self.parameters.heartbeat_tick = spec['Raft']['HeartbeatTick']
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if (self.parameters.log_entries_for_slow_followers is None):
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self.parameters.log_entries_for_slow_followers = spec['Raft']['LogEntriesForSlowFollowers']
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if (self.parameters.election_tick is None):
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self.parameters.election_tick = spec['Raft']['ElectionTick']
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if (self.parameters.task_history_retention_limit is None):
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self.parameters.task_history_retention_limit = spec['Orchestration']['TaskHistoryRetentionLimit']
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if (self.parameters.autolock_managers is None):
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self.parameters.autolock_managers = spec['EncryptionConfig']['AutoLockManagers']
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if (self.parameters.name is None):
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self.parameters.name = spec['Name']
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if (self.parameters.labels is None):
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self.parameters.labels = spec['Labels']
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if 'LogDriver' in spec['TaskDefaults']:
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self.parameters.log_driver = spec['TaskDefaults']['LogDriver']
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self.parameters.update_parameters(self.client)
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return self.parameters.spec
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def __update_swarm(self):
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try:
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self.inspect_swarm()
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version = self.swarm_info['Version']['Index']
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spec = self.swarm_info['Spec']
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new_spec = self.__update_spec(spec)
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del spec['TaskDefaults']
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if spec == new_spec:
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self.results['actions'].append("No modification")
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self.results['changed'] = False
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return
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self.client.update_swarm(
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version=version, swarm_spec=new_spec, rotate_worker_token=self.parameters.rotate_worker_token,
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rotate_manager_token=self.parameters.rotate_manager_token)
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except APIError as exc:
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self.client.fail(msg="Can not update a Swarm Cluster: %s" % to_native(exc))
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return
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self.inspect_swarm()
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self.results['actions'].append("Swarm cluster updated")
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self.results['changed'] = True
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def __isSwarmNode(self):
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info = self.client.info()
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if info:
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json_str = json.dumps(info, ensure_ascii=False)
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self.swarm_info = json.loads(json_str)
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if self.swarm_info['Swarm']['NodeID']:
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return True
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return False
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def join(self):
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if self.__isSwarmNode():
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self.results['actions'].append("This node is already part of a swarm.")
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return
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try:
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self.client.join_swarm(
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remote_addrs=self.parameters.remote_addrs, join_token=self.parameters.join_token, listen_addr=self.parameters.listen_addr,
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advertise_addr=self.parameters.advertise_addr)
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except APIError as exc:
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self.client.fail(msg="Can not join the Swarm Cluster: %s" % to_native(exc))
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self.results['actions'].append("New node is added to swarm cluster")
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self.results['changed'] = True
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def leave(self):
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if not(self.__isSwarmNode()):
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self.results['actions'].append("This node is not part of a swarm.")
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return
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try:
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self.client.leave_swarm(force=self.parameters.force)
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except APIError as exc:
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self.client.fail(msg="This node can not leave the Swarm Cluster: %s" % to_native(exc))
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self.results['actions'].append("Node has leaved the swarm cluster")
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self.results['changed'] = True
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def __get_node_info(self):
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try:
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node_info = self.client.inspect_node(node_id=self.parameters.node_id)
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except APIError as exc:
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raise exc
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json_str = json.dumps(node_info, ensure_ascii=False)
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node_info = json.loads(json_str)
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return node_info
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def __check_node_is_down(self):
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for _x in range(0, 5):
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node_info = self.__get_node_info()
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if node_info['Status']['State'] == 'down':
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return True
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sleep(5)
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return False
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def remove(self):
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if not(self.__isSwarmManager()):
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self.client.fail(msg="This node is not a manager.")
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try:
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status_down = self.__check_node_is_down()
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except APIError:
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return
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if not(status_down):
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self.client.fail(msg="Can not remove the node. The status node is ready and not down.")
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try:
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self.client.remove_node(node_id=self.parameters.node_id, force=self.parameters.force)
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except APIError as exc:
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self.client.fail(msg="Can not remove the node from the Swarm Cluster: %s" % to_native(exc))
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||||
self.results['actions'].append("Node is removed from swarm cluster.")
|
||||
self.results['changed'] = True
|
||||
|
||||
|
||||
def main():
|
||||
argument_spec = dict(
|
||||
advertise_addr=dict(type='str'),
|
||||
state=dict(type='str', choices=['present', 'join', 'absent', 'remove', 'inspect'], default='present'),
|
||||
force=dict(type='bool', default=False),
|
||||
listen_addr=dict(type='str', default='0.0.0.0:2377'),
|
||||
remote_addrs=dict(type='list'),
|
||||
join_token=dict(type='str'),
|
||||
snapshot_interval=dict(type='int'),
|
||||
task_history_retention_limit=dict(type='int'),
|
||||
keep_old_snapshots=dict(type='int'),
|
||||
log_entries_for_slow_followers=dict(type='int'),
|
||||
heartbeat_tick=dict(type='int'),
|
||||
election_tick=dict(type='int'),
|
||||
dispatcher_heartbeat_period=dict(type='int'),
|
||||
node_cert_expiry=dict(type='int'),
|
||||
name=dict(type='str'),
|
||||
labels=dict(type='dict'),
|
||||
signing_ca_cert=dict(type='str'),
|
||||
signing_ca_key=dict(type='str'),
|
||||
ca_force_rotate=dict(type='int'),
|
||||
autolock_managers=dict(type='bool'),
|
||||
node_id=dict(type='str'),
|
||||
rotate_worker_token=dict(type='bool', default=False),
|
||||
rotate_manager_token=dict(type='bool', default=False)
|
||||
)
|
||||
|
||||
required_if = [
|
||||
('state', 'join', ['advertise_addr', 'remote_addrs', 'join_token']),
|
||||
('state', 'remove', ['node_id'])
|
||||
]
|
||||
|
||||
client = AnsibleDockerClient(
|
||||
argument_spec=argument_spec,
|
||||
supports_check_mode=True,
|
||||
required_if=required_if
|
||||
)
|
||||
|
||||
results = dict(
|
||||
changed=False,
|
||||
result='',
|
||||
actions=[]
|
||||
)
|
||||
|
||||
SwarmManager(client, results)()
|
||||
client.module.exit_json(**results)
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
main()
|
||||
5
test/integration/targets/docker_swarm/aliases
Normal file
5
test/integration/targets/docker_swarm/aliases
Normal file
|
|
@ -0,0 +1,5 @@
|
|||
posix/ci/group2
|
||||
skip/osx
|
||||
skip/freebsd
|
||||
skip/rhel
|
||||
destructive
|
||||
18
test/integration/targets/docker_swarm/tasks/Fedora.yml
Normal file
18
test/integration/targets/docker_swarm/tasks/Fedora.yml
Normal file
|
|
@ -0,0 +1,18 @@
|
|||
- name: Install Docker pre-reqs
|
||||
dnf:
|
||||
name: "{{ item }}"
|
||||
state: present
|
||||
loop:
|
||||
- dnf-plugins-core
|
||||
|
||||
- name: Add repository
|
||||
command: dnf config-manager --add-repo https://download.docker.com/linux/fedora/docker-ce.repo
|
||||
|
||||
- name: Update cache
|
||||
command: dnf makecache
|
||||
|
||||
- name: Install docker
|
||||
dnf:
|
||||
name: docker-ce
|
||||
state: present
|
||||
enablerepo: docker-ce-test
|
||||
11
test/integration/targets/docker_swarm/tasks/OpenSuse.yml
Normal file
11
test/integration/targets/docker_swarm/tasks/OpenSuse.yml
Normal file
|
|
@ -0,0 +1,11 @@
|
|||
- name: Template repo
|
||||
template:
|
||||
src: virt.repo.j2
|
||||
dest: /etc/zypp/repos.d/virt.repo
|
||||
|
||||
- name: Install docker 17
|
||||
zypper:
|
||||
name: docker>=17
|
||||
force: yes
|
||||
disable_gpg_check: yes
|
||||
update_cache: yes
|
||||
57
test/integration/targets/docker_swarm/tasks/Ubuntu.yml
Normal file
57
test/integration/targets/docker_swarm/tasks/Ubuntu.yml
Normal file
|
|
@ -0,0 +1,57 @@
|
|||
- name: Get OS version
|
||||
shell: uname -r
|
||||
register: os_version
|
||||
|
||||
- name: Install packages for Trusty
|
||||
apt:
|
||||
name: "{{ item }}"
|
||||
state: present
|
||||
update_cache: yes
|
||||
with_items:
|
||||
- "linux-image-extra-{{ os_version.stdout }}"
|
||||
- linux-image-extra-virtual
|
||||
when: ansible_distribution_release == 'trusty'
|
||||
|
||||
- name: Install pre-reqs
|
||||
apt:
|
||||
name: "{{ item }}"
|
||||
state: present
|
||||
update_cache: yes
|
||||
with_items:
|
||||
- apt-transport-https
|
||||
- ca-certificates
|
||||
- curl
|
||||
- software-properties-common
|
||||
|
||||
- name: Add gpg key
|
||||
shell: curl -fsSL https://download.docker.com/linux/ubuntu/gpg >key && apt-key add key
|
||||
|
||||
- name: Add Docker repo
|
||||
shell: add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
|
||||
|
||||
- block:
|
||||
- name: Prevent service restart
|
||||
copy:
|
||||
content: exit 101
|
||||
dest: /usr/sbin/policy-rc.d
|
||||
backup: yes
|
||||
mode: 0755
|
||||
register: policy_rc_d
|
||||
|
||||
- name: Install Docker CE
|
||||
apt:
|
||||
name: docker-ce
|
||||
state: present
|
||||
update_cache: yes
|
||||
always:
|
||||
- name: Restore /usr/sbin/policy-rc.d (if needed)
|
||||
command: mv {{ policy_rc_d.backup_file }} /usr/sbin/policy-rc.d
|
||||
when:
|
||||
- "'backup_file' in policy_rc_d"
|
||||
|
||||
- name: Remove /usr/sbin/policy-rc.d (if needed)
|
||||
file:
|
||||
path: /usr/sbin/policy-rc.d
|
||||
state: absent
|
||||
when:
|
||||
- "'backup_file' not in policy_rc_d"
|
||||
11
test/integration/targets/docker_swarm/tasks/main.yml
Normal file
11
test/integration/targets/docker_swarm/tasks/main.yml
Normal file
|
|
@ -0,0 +1,11 @@
|
|||
- include: Fedora.yml
|
||||
when: ansible_distribution == 'Fedora'
|
||||
|
||||
- include: OpenSuse.yml
|
||||
when: ansible_os_family == 'Suse'
|
||||
|
||||
- include: Ubuntu.yml
|
||||
when: ansible_os_family == 'Debian'
|
||||
|
||||
- include: test_swarm.yml
|
||||
when: ansible_os_family != 'RedHat' or ansible_distribution_major_version != '6'
|
||||
68
test/integration/targets/docker_swarm/tasks/test_swarm.yml
Normal file
68
test/integration/targets/docker_swarm/tasks/test_swarm.yml
Normal file
|
|
@ -0,0 +1,68 @@
|
|||
- name: Install Python requirements
|
||||
pip:
|
||||
state: present
|
||||
name: "{{ item }}"
|
||||
with_items:
|
||||
- docker==2.7.0
|
||||
|
||||
- name: Test parameters with state=present
|
||||
docker_swarm:
|
||||
state: present
|
||||
ignore_errors: yes
|
||||
register: output
|
||||
|
||||
- name: assert failure when called with state=init and no advertise_addr
|
||||
assert:
|
||||
that:
|
||||
- 'output.failed'
|
||||
- 'output.msg == "advertise_addr is required to initialize a swarm cluster."'
|
||||
|
||||
- name: Test parameters with state=join
|
||||
docker_swarm:
|
||||
state: join
|
||||
ignore_errors: yes
|
||||
register: output
|
||||
|
||||
- name: assert failure when called with state=join and no advertise_addr,remote_addrs,join_token
|
||||
assert:
|
||||
that:
|
||||
- 'output.failed'
|
||||
- 'output.msg == "state is join but all of the following are missing: advertise_addr, remote_addrs, join_token"'
|
||||
|
||||
- name: Test parameters with state=remove
|
||||
docker_swarm:
|
||||
state: remove
|
||||
ignore_errors: yes
|
||||
register: output
|
||||
|
||||
- name: assert failure when called with state=remove and no node_id
|
||||
assert:
|
||||
that:
|
||||
- 'output.failed'
|
||||
- 'output.msg == "state is remove but all of the following are missing: node_id"'
|
||||
|
||||
- name: Create a Swarm cluster
|
||||
docker_swarm:
|
||||
state: present
|
||||
advertise_addr: "{{ansible_default_ipv4.address}}"
|
||||
register: output
|
||||
|
||||
- name: assert changed when create a new swarm cluster
|
||||
assert:
|
||||
that:
|
||||
- 'output.changed'
|
||||
- 'output.actions[0] | regex_search("New Swarm cluster created: ")'
|
||||
- 'output.swarm_facts.JoinTokens.Manager'
|
||||
- 'output.swarm_facts.JoinTokens.Worker'
|
||||
|
||||
- name: Remove a Swarm cluster
|
||||
docker_swarm:
|
||||
state: absent
|
||||
force: true
|
||||
register: output
|
||||
|
||||
- name: assert changed when remove a swarm cluster
|
||||
assert:
|
||||
that:
|
||||
- 'output.changed'
|
||||
- 'output.actions[0] == "Node has leaved the swarm cluster"'
|
||||
|
|
@ -0,0 +1,7 @@
|
|||
[Virtualization_containers]
|
||||
name=Virtualization:containers (openSUSE_Leap_{{ ansible_distribution_version }})
|
||||
type=rpm-md
|
||||
baseurl=http://download.opensuse.org/repositories/Virtualization:/containers/openSUSE_Leap_{{ ansible_distribution_version }}/
|
||||
gpgcheck=1
|
||||
gpgkey=http://download.opensuse.org/repositories/Virtualization:/containers/openSUSE_Leap_{{ ansible_distribution_version }}/repodata/repomd.xml.key
|
||||
enabled=1
|
||||
Loading…
Reference in a new issue