Documentation

ovirt_snapshots - Module to manage Virtual Machine Snapshots in oVirt/RHV

New in version 2.3.

Synopsis

  • Module to manage Virtual Machine Snapshots in oVirt/RHV

Requirements

The below requirements are needed on the host that executes this module.

  • python >= 2.7
  • ovirt-engine-sdk-python >= 4.2.4

Parameters

Parameter Choices/Defaults Comments
auth
required
Dictionary with values needed to create HTTP/HTTPS connection to oVirt:
username[required] - The name of the user, something like [email protected]. Default value is set by OVIRT_USERNAME environment variable.
password[required] - The password of the user. Default value is set by OVIRT_PASSWORD environment variable.
url - A string containing the API URL of the server, usually something like `https://server.example.com/ovirt-engine/api`. Default value is set by OVIRT_URL environment variable. Either url or hostname is required.
hostname - A string containing the hostname of the server, usually something like `server.example.com`. Default value is set by OVIRT_HOSTNAME environment variable. Either url or hostname is required.
token - Token to be used instead of login with username/password. Default value is set by OVIRT_TOKEN environment variable.
insecure - A boolean flag that indicates if the server TLS certificate and host name should be checked.
ca_file - A PEM file containing the trusted CA certificates. The certificate presented by the server will be verified using these CA certificates. If `ca_file` parameter is not set, system wide CA certificate store is used. Default value is set by OVIRT_CAFILE environment variable.
kerberos - A boolean flag indicating if Kerberos authentication should be used instead of the default basic authentication.
headers - Dictionary of HTTP headers to be added to each API call.
description
Description of the snapshot.
fetch_nested
(added in 2.3)
If True the module will fetch additional data from the API.
It will fetch IDs of the VMs disks, snapshots, etc. User can configure to fetch other attributes of the nested entities by specifying nested_attributes.
nested_attributes
(added in 2.3)
Specifies list of the attributes which should be fetched from the API.
This parameter apply only when fetch_nested is true.
poll_interval Default:
3
Number of the seconds the module waits until another poll request on entity status is sent.
snapshot_id
ID of the snapshot to manage.
state
    Choices:
  • restore
  • present ←
  • absent
Should the Virtual Machine snapshot be restore/present/absent.
timeout Default:
180
The amount of time in seconds the module should wait for the instance to get into desired state.
use_memory
If true and state is present save memory of the Virtual Machine if it's running.
If true and state is restore restore memory of the Virtual Machine.
Note that Virtual Machine will be paused while saving the memory.
vm_name
required
Name of the Virtual Machine to manage.
wait
True if the module should wait for the entity to get into desired state.

Notes

Note

  • Note that without a guest agent the data on the created snapshot may be inconsistent.
  • Deleting a snapshot does not remove any information from the virtual machine - it simply removes a return-point. However, restoring a virtual machine from a snapshot deletes any content that was written to the virtual machine after the time the snapshot was taken.
  • In order to use this module you have to install oVirt Python SDK. To ensure it’s installed with correct version you can create the following task: pip: name=ovirt-engine-sdk-python version=4.2.4

Examples

# Examples don't contain auth parameter for simplicity,
# look at ovirt_auth module to see how to reuse authentication:

# Create snapshot:
- ovirt_snapshots:
    vm_name: rhel7
    description: MySnapshot
  register: snapshot

# Create snapshot and save memory:
- ovirt_snapshots:
    vm_name: rhel7
    description: SnapWithMem
    use_memory: true
  register: snapshot

# Restore snapshot:
- ovirt_snapshots:
    state: restore
    vm_name: rhel7
    snapshot_id: "{{ snapshot.id }}"

# Remove snapshot:
- ovirt_snapshots:
    state: absent
    vm_name: rhel7
    snapshot_id: "{{ snapshot.id }}"

Return Values

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

Key Returned Description
id
str
On success if snapshot is found.
ID of the snapshot which is managed

Sample:
7de90f31-222c-436c-a1ca-7e655bd5b60c
snapshot
dict
On success if snapshot is found.
Dictionary of all the snapshot attributes. Snapshot attributes can be found on your oVirt/RHV instance at following url: http://ovirt.github.io/ovirt-engine-api-model/master/#types/snapshot.



Status

This module is flagged as preview which means that it is not guaranteed to have a backwards compatible interface.

Author

  • Ondra Machacek (@machacekondra)

Hint

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