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
OVNDBSPacemakerTimeout which will configure
tripleo::profile::pacemaker::ovn_dbs_bundle (default is set to 60s)
Depends-On: https://review.opendev.org/#/c/692114/
Signed-off-by: Kamil Sambor <ksambor@redhat.com>
Closes-Bug: #1853000
Change-Id: I1afb5f2ef31ec61b3b224e5e1672fb9f12bcb110
(cherry picked from commit ad1ef91aa4
)
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parent
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@ -68,6 +68,10 @@ parameters:
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type: string
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description: Specifies the default CA cert to use if TLS is used for
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services in the internal network.
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OVNDBSPacemakerTimeout:
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description: timeout for monitor of ovn dbs resource in seconds
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type: number
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default: 60
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conditions:
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@ -110,6 +114,7 @@ outputs:
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- tripleo::profile::pacemaker::ovn_dbs_bundle::nb_db_port: {get_param: OVNNorthboundServerPort}
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- tripleo::profile::pacemaker::ovn_dbs_bundle::sb_db_port: {get_param: OVNSouthboundServerPort}
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- tripleo::profile::pacemaker::ovn_dbs_bundle::container_backend: {get_param: ContainerCli}
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- tripleo::profile::pacemaker::ovn_dbs_bundle::dbs_timeout: {get_param: OVNDBSPacemakerTimeout}
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- tripleo::haproxy::ovn_dbs_manage_lb: false
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- tripleo::ovn_dbs::firewall_rules:
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'121 OVN DB server ports':
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@ -0,0 +1,11 @@
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---
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features:
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- |
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Under pressure, the default monitor timeout value of 20 seconds is not
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enough to prevent unnecessary failovers of the ovn-dbs pacemaker resource.
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While spawning a few VMs in the same time this could lead to unnecessary
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movements of master DB, then re-connections of ovn-controllers (slaves are
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read-only), further peaks of load on DBs, and at the end it could lead to
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snowball effect. Now this value can be configurable by
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OVNDBSPacemakerTimeout which will configure
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tripleo::profile::pacemaker::ovn_dbs_bundle (default is set to 60s).
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