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oVirt Disaster Recovery

The oVirt.disaster-recovery role responsible to manage the disaster recovery scenarios in oVirt.

Requirements

  • Ansible version 2.5 or higher
  • Python SDK version 4.2.4 or higher

Role Variables

Name Default value
dr_ignore_error_clean False Specify whether to ignore errors on clean engine setup.
This is mainly being used to avoid failures when trying to move a storage domain to maintenance/detach it.
dr_ignore_error_recover True Specify whether to ignore errors on recover.
dr_partial_import True Specify whether to use the partial import flag on VM/Template register.
If True, VMs and Templates will be registered without any missing disks, if false VMs/Templates will fail to be registered in case some of their disks will be missing from any of the storage domains.
dr_target_host secondary Specify the default target host to be used in the ansible play.
This host indicates the target site which the recover process will bedone.
dr_source_map primary Specify the default source map to be used in the play.</br/> The source map indicates the key which is used to get the target value for each attribute which we want to register with the VM/Template.
dr_reset_mac_pool True If true, then once a VM will be registered, it will automatically reset the mac pool, if configured in the VM.
dr_cleanup_retries_maintenance 3 Specify the number of retries of moving a storage domain to maintenace VM as part of a fail back scenario.
dr_cleanup_delay_maintenance 120 Specify the number of seconds between each retry as part of a fail back scenario.
dr_clean_orphaned_vms: True Specify whether to remove any VMs which have no disks from the setup as part of cleanup.
dr_clean_orphaned_disks: True Specify whether to remove lun disks from the setup as part of engine setup.

Dependencies

No.

Example Playbook

---
- name: Setup oVirt environment
  hosts: localhost
  connection: local
  vars_files:
     - ovirt_passwords.yml
     - disaster_recovery_vars.yml
  roles:
     - {role: oVirt.disaster-recovery}

Generate var file mapping demo
Fail over scenario demo

Scripts

The ovirt-dr script should provide the user a more convinient way to run disaster recovery actions as a way to avoid using ansible playbooks directly. There are four actions which the user can execute: validate validate the var file mapping which is used for failover and failback generate Generate the mapping var file based on the primary and secondary setup, to be used for failover and failback failover Start a failover process to the target setup failback Start a failback process from the target setup to the source setup

Each of those actions is using a configuration file which its default location is oVirt.disaster-recovery/files/dr.conf

Example Script

For mapping file generation: ./ovirt-dr generate For mapping file validation: ./ovirt-dr validate For fail-over operation: ./ovirt-dr failover For fail-back operation: ./ovirt-dr failback

License

Apache License 2.0