Compute maintenance playbooks #53
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…isors These may be used to perform package updates that require a reboot: * disable compute service (nova-compute-disable.yml) * live migrate VMs away (nova-compute-drain.yml) * reboot (reboot.yml) * enable compute service (nova-compute-enable.yml) They may also be used to drain a compute node before a rebuild: * disable compute service (nova-compute-disable.yml) * live migrate VMs away (nova-compute-drain.yml) * stop services (kayobe overcloud service stop)
Starting from python-openstackclient 5.5.0, it is not necessary to specify the --block-migration argument when instance disks are not on shared storage [1]. Instead, we can request the use of Nova API version 2.25, which added the auto value for block_migration. This was added to Mitaka so it is safe to use on all our deployments. This client version is only available from Wallaby. On Victoria, the change is a no-op. Note that a warning will be written to stderr about --disk-overcommit and --no-disk-overcommit options. This is a bug in openstackclient [2]. [1] https://review.opendev.org/c/openstack/python-openstackclient/+/771801 [2] https://storyboard.openstack.org/#!/story/2009657
Note that `kayobe overcloud host package update` doesn't support serial execution.
cityofships
approved these changes
May 30, 2022
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Add playbooks and scripts to aid in performing maintainence on hypervisors
These may be used to perform package updates that require a reboot:
They may also be used to drain a compute node before a rebuild: