ovirt_affinity_group – Module to manage affinity groups in oVirt/RHV

Synopsis

  • This module manage affinity groups in oVirt/RHV. It can also manage assignments of those groups to VMs.

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.
cluster
-
Name of the cluster of the affinity group.
description
-
Description of the affinity group.
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.
host_enforcing
boolean
    Choices:
  • no
  • yes
If yes VM cannot start on host if it does not satisfy the host_rule.
This parameter is support since oVirt/RHV 4.1 version.
host_rule
-
    Choices:
  • negative
  • positive
If positive all VMs in this group should run on the this host.
If negative no VMs in this group should run on the this host.
This parameter is support since oVirt/RHV 4.1 version.
hosts
-
List of the hosts names, which should have assigned this affinity group.
This parameter is support since oVirt/RHV 4.1 version.
name
- / required
Name of the affinity group to manage.
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.
state
-
    Choices:
  • absent
  • present ←
Should the affinity group be present or absent.
timeout
integer
Default:
180
The amount of time in seconds the module should wait for the instance to get into desired state.
vm_enforcing
boolean
    Choices:
  • no
  • yes
If yes VM cannot start if it does not satisfy the vm_rule.
vm_rule
-
    Choices:
  • disabled
  • negative
  • positive
If positive all VMs in this group should run on the host defined by host_rule.
If negative no VMs in this group should run on the host defined by host_rule.
If disabled this affinity group doesn't take effect.
vms
-
List of the VMs names, which should have assigned this affinity group.
wait
boolean
    Choices:
  • no
  • yes ←
yes if the module should wait for the entity to get into desired state.

Notes

Note

  • 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:

- name: Create(if not exists) and assign affinity group to VMs vm1 and vm2 and host host1
  ovirt_affinity_group:
    name: mygroup
    cluster: mycluster
    vm_enforcing: true
    vm_rule: positive
    host_enforcing: true
    host_rule: positive
    vms:
      - vm1
      - vm2
    hosts:
      - host1

- name: Detach VMs from affinity group and disable VM rule
  ovirt_affinity_group:
    name: mygroup
    cluster: mycluster
    vm_enforcing: false
    vm_rule: disabled
    host_enforcing: true
    host_rule: positive
    vms: []
    hosts:
      - host1
      - host2

- name: Remove affinity group
  ovirt_affinity_group:
    state: absent
    cluster: mycluster
    name: mygroup

Return Values

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

Key Returned Description
affinity_group
string
On success if affinity group is found.
Dictionary of all the affinity group attributes. Affinity group attributes can be found on your oVirt/RHV instance at following url: http://ovirt.github.io/ovirt-engine-api-model/master/#types/affinity_group.
id
string
On success if affinity group is found.
ID of the affinity group which is managed

Sample:
7de90f31-222c-436c-a1ca-7e655bd5b60c


Status

Authors

  • Ondra Machacek (@machacekondra)

Hint

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