ovirt_snapshot – Module to manage Virtual Machine Snapshots in oVirt/RHV

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 >= 4.3.0

Parameters

Parameter Choices/Defaults Comments
auth
dictionary / required
Dictionary with values needed to create HTTP/HTTPS connection to oVirt:
ca_file
string
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.
headers
dictionary
Dictionary of HTTP headers to be added to each API call.
hostname
string
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.
insecure
boolean
    Choices:
  • no
  • yes
A boolean flag that indicates if the server TLS certificate and host name should be checked.
kerberos
boolean
    Choices:
  • no
  • yes
A boolean flag indicating if Kerberos authentication should be used instead of the default basic authentication.
password
string / required
The password of the user.
Default value is set by OVIRT_PASSWORD environment variable.
token
string
Token to be used instead of login with username/password.
Default value is set by OVIRT_TOKEN environment variable.
url
string
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.
username
string / required
The name of the user, something like admin@internal.
Default value is set by OVIRT_USERNAME environment variable.
description
-
Description of the snapshot.
disk_id
-
added in 2.8
Disk id which you want to upload or download
To get disk, you need to define disk_id or disk_name
disk_name
-
added in 2.8
Disk name which you want to upload or download
download_image_path
-
added in 2.8
Path on a file system where snapshot should be downloaded.
Note that you must have an valid oVirt/RHV engine CA in your system trust store or you must provide it in ca_file parameter.
Note that the snapshot is not downloaded when the file already exists, but you can forcibly download the snapshot when using force I (true).
fetch_nested
boolean
    Choices:
  • no
  • yes
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.
keep_days_old
-
added in 2.8
Number of days after which should snapshot be deleted.
It will check all snapshots of virtual machine and delete them, if they are older.
nested_attributes
list
Specifies list of the attributes which should be fetched from the API.
This parameter apply only when fetch_nested is true.
poll_interval
integer
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
integer
Default:
180
The amount of time in seconds the module should wait for the instance to get into desired state.
upload_image_path
-
added in 2.8
Path to disk image, which should be uploaded.
use_memory
boolean
    Choices:
  • no
  • yes
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.

aliases: restore_memory, save_memory
vm_name
- / required
Name of the Virtual Machine to manage.
wait
boolean
    Choices:
  • no
  • yes ←
yes 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=4.3.0

Examples

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

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

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

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

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

# Upload local image to disk and attach it to vm:
# Since Ansible 2.8
- ovirt_snapshot:
    name: mydisk
    vm_name: myvm
    upload_image_path: /path/to/mydisk.qcow2

# Download snapshot to local file system:
# Since Ansible 2.8
- ovirt_snapshot:
    snapshot_id: 7de90f31-222c-436c-a1ca-7e655bd5b60c
    disk_name: DiskName
    vm_name: myvm
    download_image_path: /home/user/mysnaphost.qcow2

# Delete all snapshots older than 2 days
- ovirt_snapshot:
    vm_name: test
    keep_days_old: 2

Return Values

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

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

Sample:
7de90f31-222c-436c-a1ca-7e655bd5b60c
snapshot
dictionary
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.
snapshots
list
On success returns deleted snapshots
List of deleted snapshots when keep_days_old is defined and snapshot is older than the input days


Status

Authors

  • Ondra Machacek (@machacekondra)

Hint

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