lxd_container – Manage LXD Containers

Synopsis

  • Management of LXD containers

Parameters

Parameter Choices/Defaults Comments
architecture
-
The architecture for the container (e.g. "x86_64" or "i686"). See https://github.com/lxc/lxd/blob/master/doc/rest-api.md#post-1
client_cert
-
Default:
"\"{}/.config/lxc/client.crt\" .format(os.environ[\"HOME\"])"
The client certificate file path.

aliases: cert_file
client_key
-
Default:
"\"{}/.config/lxc/client.key\" .format(os.environ[\"HOME\"])"
The client certificate key file path.

aliases: key_file
config
-
The config for the container (e.g. {"limits.cpu": "2"}). See https://github.com/lxc/lxd/blob/master/doc/rest-api.md#post-1
If the container already exists and its "config" value in metadata obtained from GET /1.0/containers/<name> https://github.com/lxc/lxd/blob/master/doc/rest-api.md#10containersname are different, they this module tries to apply the configurations.
The key starts with 'volatile.' are ignored for this comparison.
Not all config values are supported to apply the existing container. Maybe you need to delete and recreate a container.
devices
-
The devices for the container (e.g. { "rootfs": { "path": "/dev/kvm", "type": "unix-char" }). See https://github.com/lxc/lxd/blob/master/doc/rest-api.md#post-1
ephemeral
boolean
    Choices:
  • no
  • yes
Whether or not the container is ephemeral (e.g. true or false). See https://github.com/lxc/lxd/blob/master/doc/rest-api.md#post-1
force_stop
boolean
    Choices:
  • no ←
  • yes
If this is true, the lxd_container forces to stop the container when it stops or restarts the container.
name
- / required
Name of a container.
snap_url
-
added in 2.8
 Default:
"unix:/var/snap/lxd/common/lxd/unix.socket"
The unix domain socket path when LXD is installed by snap package manager.
source
-
The source for the container (e.g. { "type": "image", "mode": "pull", "server": "https://images.linuxcontainers.org", "protocol": "lxd", "alias": "ubuntu/xenial/amd64" }).
Note that protocol accepts two choices: lxd or simplestreams
state
-
    Choices:
  • started ←
  • stopped
  • restarted
  • absent
  • frozen
Define the state of a container.
timeout
-
Default:
30
A timeout for changing the state of the container.
This is also used as a timeout for waiting until IPv4 addresses are set to the all network interfaces in the container after starting or restarting.
trust_password
-
The client trusted password.
You need to set this password on the LXD server before running this module using the following command. lxc config set core.trust_password <some random password> See https://www.stgraber.org/2016/04/18/lxd-api-direct-interaction/
If trust_password is set, this module send a request for authentication before sending any requests.
url
-
Default:
"unix:/var/lib/lxd/unix.socket"
The unix domain socket path or the https URL for the LXD server.
wait_for_ipv4_addresses
boolean
    Choices:
  • no ←
  • yes
If this is true, the lxd_container waits until IPv4 addresses are set to the all network interfaces in the container after starting or restarting.

Notes

Note

  • Containers must have a unique name. If you attempt to create a container with a name that already existed in the users namespace the module will simply return as “unchanged”.

  • There are two ways to run commands in containers, using the command module or using the ansible lxd connection plugin bundled in Ansible >= 2.1, the later requires python to be installed in the container which can be done with the command module.

  • You can copy a file from the host to the container with the Ansible copy and template module and the lxd connection plugin. See the example below.

  • You can copy a file in the created container to the localhost with command=lxc file pull container_name/dir/filename filename. See the first example below.

Examples

# An example for creating a Ubuntu container and install python
- hosts: localhost
  connection: local
  tasks:
    - name: Create a started container
      lxd_container:
        name: mycontainer
        state: started
        source:
          type: image
          mode: pull
          server: https://images.linuxcontainers.org
          protocol: lxd # if you get a 404, try setting protocol: simplestreams
          alias: ubuntu/xenial/amd64
        profiles: ["default"]
        wait_for_ipv4_addresses: true
        timeout: 600

    - name: check python is installed in container
      delegate_to: mycontainer
      raw: dpkg -s python
      register: python_install_check
      failed_when: python_install_check.rc not in [0, 1]
      changed_when: false

    - name: install python in container
      delegate_to: mycontainer
      raw: apt-get install -y python
      when: python_install_check.rc == 1

# An example for creating an Ubuntu 14.04 container using an image fingerprint.
# This requires changing 'server' and 'protocol' key values, replacing the
# 'alias' key with with 'fingerprint' and supplying an appropriate value that
# matches the container image you wish to use.
- hosts: localhost
  connection: local
  tasks:
    - name: Create a started container
      lxd_container:
        name: mycontainer
        state: started
        source:
          type: image
          mode: pull
          # Provides current (and older) Ubuntu images with listed fingerprints
          server: https://cloud-images.ubuntu.com/releases
          # Protocol used by 'ubuntu' remote (as shown by 'lxc remote list')
          protocol: simplestreams
          # This provides an Ubuntu 14.04 LTS amd64 image from 20150814.
          fingerprint: e9a8bdfab6dc
        profiles: ["default"]
        wait_for_ipv4_addresses: true
        timeout: 600

# An example for deleting a container
- hosts: localhost
  connection: local
  tasks:
    - name: Delete a container
      lxd_container:
        name: mycontainer
        state: absent

# An example for restarting a container
- hosts: localhost
  connection: local
  tasks:
    - name: Restart a container
      lxd_container:
        name: mycontainer
        state: restarted

# An example for restarting a container using https to connect to the LXD server
- hosts: localhost
  connection: local
  tasks:
    - name: Restart a container
      lxd_container:
        url: https://127.0.0.1:8443
        # These client_cert and client_key values are equal to the default values.
        #client_cert: "{{ lookup('env', 'HOME') }}/.config/lxc/client.crt"
        #client_key: "{{ lookup('env', 'HOME') }}/.config/lxc/client.key"
        trust_password: mypassword
        name: mycontainer
        state: restarted

# Note your container must be in the inventory for the below example.
#
# [containers]
# mycontainer ansible_connection=lxd
#
- hosts:
    - mycontainer
  tasks:
    - name: copy /etc/hosts in the created container to localhost with name "mycontainer-hosts"
      fetch:
        src: /etc/hosts
        dest: /tmp/mycontainer-hosts
        flat: true

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key Returned Description
actions
list
success
List of actions performed for the container.

Sample:
["create", "start"]
addresses
dictionary
when state is started or restarted
Mapping from the network device name to a list of IPv4 addresses in the container

Sample:
{'eth0': ['10.155.92.191']}
logs
list
when ansible-playbook is invoked with -vvvv.
The logs of requests and responses.

Sample:
(too long to be placed here)
old_state
string
when state is started or restarted
The old state of the container

Sample:
stopped


Status

Authors

  • Hiroaki Nakamura (@hnakamur)

Hint

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