e98393c5c2
This change allows the nova-scheduler `discover hosts` periodic task to be enabled on multiple scheduler instances without racing. This is done by modifying the periodic to do a very simple form of leader election. implements: blueprint distributed-host-discovery Change-Id: I96d74981e1cff8cc1fce4a74c8db3f7d58e20f33
13 lines
628 B
YAML
13 lines
628 B
YAML
---
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features:
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- |
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The nova scheduler now supports enabling the nova cell discover hosts
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perodic task on multiple schedulers. In prior release enabling this
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feature required setting the discover_hosts_in_cells_interval option
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to a value greater than 0 in at most one scheduler, with the 2025.1
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release it was possible to enable the feature on multiple schedulers
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via the introduction of leader election. This simplifies deployment
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of nova in kubernetes by allowing the operator to deploy
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multiple schedulers and have them elect a single leader that will run
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the discover hosts perodic task.
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