lxc_container – Manage LXC Containers¶
Requirements¶
The below requirements are needed on the host that executes this module.
- lxc >= 1.0 # OS package
- python >= 2.6 # OS Package
- lxc-python2 >= 0.1 # PIP Package from https://github.com/lxc/python2-lxc
Parameters¶
Notes¶
Note
- Containers must have a unique name. If you attempt to create a container with a name that already exists in the users namespace the module will simply return as “unchanged”.
- The “container_command” can be used with any state except “absent”. If used with state “stopped” the container will be “started”, the command executed, and then the container “stopped” again. Likewise if the state is “stopped” and the container does not exist it will be first created, “started”, the command executed, and then “stopped”. If you use a “|” in the variable you can use common script formatting within the variable itself The “container_command” option will always execute as BASH. When using “container_command” a log file is created in the /tmp/ directory which contains both stdout and stderr of any command executed.
- If “archive” is true the system will attempt to create a compressed tarball of the running container. The “archive” option supports LVM backed containers and will create a snapshot of the running container when creating the archive.
- If your distro does not have a package for “python2-lxc”, which is a requirement for this module, it can be installed from source at “https://github.com/lxc/python2-lxc” or installed via pip using the package name lxc-python2.
Examples¶
- name: Create a started container
lxc_container:
name: test-container-started
container_log: true
template: ubuntu
state: started
template_options: --release trusty
- name: Create a stopped container
lxc_container:
name: test-container-stopped
container_log: true
template: ubuntu
state: stopped
template_options: --release trusty
- name: Create a frozen container
lxc_container:
name: test-container-frozen
container_log: true
template: ubuntu
state: frozen
template_options: --release trusty
container_command: |
echo 'hello world.' | tee /opt/started-frozen
# Create filesystem container, configure it, and archive it, and start it.
- name: Create filesystem container
lxc_container:
name: test-container-config
backing_store: dir
container_log: true
template: ubuntu
state: started
archive: true
archive_compression: none
container_config:
- "lxc.aa_profile=unconfined"
- "lxc.cgroup.devices.allow=a *:* rmw"
template_options: --release trusty
# Create an lvm container, run a complex command in it, add additional
# configuration to it, create an archive of it, and finally leave the container
# in a frozen state. The container archive will be compressed using bzip2
- name: Create a frozen lvm container
lxc_container:
name: test-container-lvm
container_log: true
template: ubuntu
state: frozen
backing_store: lvm
template_options: --release trusty
container_command: |
apt-get update
apt-get install -y vim lxc-dev
echo 'hello world.' | tee /opt/started
if [[ -f "/opt/started" ]]; then
echo 'hello world.' | tee /opt/found-started
fi
container_config:
- "lxc.aa_profile=unconfined"
- "lxc.cgroup.devices.allow=a *:* rmw"
archive: true
archive_compression: bzip2
register: lvm_container_info
- name: Debug info on container "test-container-lvm"
debug:
var: lvm_container_info
- name: Run a command in a container and ensure its in a "stopped" state.
lxc_container:
name: test-container-started
state: stopped
container_command: |
echo 'hello world.' | tee /opt/stopped
- name: Run a command in a container and ensure its it in a "frozen" state.
lxc_container:
name: test-container-stopped
state: frozen
container_command: |
echo 'hello world.' | tee /opt/frozen
- name: Start a container
lxc_container:
name: test-container-stopped
state: started
- name: Run a command in a container and then restart it
lxc_container:
name: test-container-started
state: restarted
container_command: |
echo 'hello world.' | tee /opt/restarted
- name: Run a complex command within a "running" container
lxc_container:
name: test-container-started
container_command: |
apt-get update
apt-get install -y curl wget vim apache2
echo 'hello world.' | tee /opt/started
if [[ -f "/opt/started" ]]; then
echo 'hello world.' | tee /opt/found-started
fi
# Create an archive of an existing container, save the archive to a defined
# path and then destroy it.
- name: Archive container
lxc_container:
name: test-container-started
state: absent
archive: true
archive_path: /opt/archives
# Create a container using overlayfs, create an archive of it, create a
# snapshot clone of the container and and finally leave the container
# in a frozen state. The container archive will be compressed using gzip.
- name: Create an overlayfs container archive and clone it
lxc_container:
name: test-container-overlayfs
container_log: true
template: ubuntu
state: started
backing_store: overlayfs
template_options: --release trusty
clone_snapshot: true
clone_name: test-container-overlayfs-clone-snapshot
archive: true
archive_compression: gzip
register: clone_container_info
- name: debug info on container "test-container"
debug:
var: clone_container_info
- name: Clone a container using snapshot
lxc_container:
name: test-container-overlayfs-clone-snapshot
backing_store: overlayfs
clone_name: test-container-overlayfs-clone-snapshot2
clone_snapshot: true
- name: Create a new container and clone it
lxc_container:
name: test-container-new-archive
backing_store: dir
clone_name: test-container-new-archive-clone
- name: Archive and clone a container then destroy it
lxc_container:
name: test-container-new-archive
state: absent
clone_name: test-container-new-archive-destroyed-clone
archive: true
archive_compression: gzip
- name: Start a cloned container.
lxc_container:
name: test-container-new-archive-destroyed-clone
state: started
- name: Destroy a container
lxc_container:
name: '{{ item }}'
state: absent
with_items:
- test-container-stopped
- test-container-started
- test-container-frozen
- test-container-lvm
- test-container-config
- test-container-overlayfs
- test-container-overlayfs-clone
- test-container-overlayfs-clone-snapshot
- test-container-overlayfs-clone-snapshot2
- test-container-new-archive
- test-container-new-archive-clone
- test-container-new-archive-destroyed-clone
Return Values¶
Common return values are documented here, the following are the fields unique to this module:
Status¶
- This module is not guaranteed to have a backwards compatible interface. [preview]
- This module is maintained by the Ansible Community. [community]
Authors¶
- Kevin Carter (@cloudnull)
Hint
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