puppet-tripleo/releasenotes/notes/setup_timeouts_ovn_dbs-630a7ccfda5976a5.yaml
Kamil Sambor 95a7f217e2 Add configurable monitor timeouts for ovn dbs
Under pressure, the default monitor timeout value of 20 seconds is not
enough to prevent unnecessary failovers of the ovn-dbs pacemaker resource.
While spawning a few VMs in the same time this could lead to unnecessary
movements of master DB, then re-connections of ovn-controllers (slaves are
read-only), further peaks of load on DBs, and at the end it could lead to
snowball effect. Now this value can be configurable by dbs_timeout in
tripleo::profile::pacemaker::ovn_dbs_bundle and by default is set to 60s.

Change-Id: Ib95c6b7614631eed264d42e6cf61672b705e7893
Signed-off-by: Kamil Sambor <ksambor@redhat.com>
Partial-Bug: #1853000
(cherry picked from commit 15e21010a8)
2019-11-18 13:56:58 +00:00

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YAML

---
features:
- |
Under pressure, the default monitor timeout value of 20 seconds is not
enough to prevent unnecessary failovers of the ovn-dbs pacemaker resource.
While spawning a few VMs in the same time this could lead to unnecessary
movements of master DB, then re-connections of ovn-controllers (slaves are
read-only), further peaks of load on DBs, and at the end it could lead to
snowball effect. Now this value can be configurable by dbs_timeout in
tripleo::profile::pacemaker::ovn_dbs_bundle and by default is set to 60s.