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/692123/ Signed-off-by: Kamil Sambor <ksambor@redhat.com> Change-Id: I1afb5f2ef31ec61b3b224e5e1672fb9f12bcb110 (cherry picked from commitad1ef91aa4
) (cherry picked from commitca335af7cb
) (cherry picked from commita429b0cf0b
) (cherry picked from commit298788bc78
)
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@ -54,6 +54,10 @@ parameters:
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description: >
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Setting this to a unique value will re-run any deployment tasks which
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perform configuration on a Heat stack-update.
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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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puppet_debug_enabled: {get_param: ConfigDebug}
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@ -92,6 +96,7 @@ outputs:
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- 'pcmklatest'
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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::dbs_timeout: {get_param: OVNDBSPacemakerTimeout}
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logging_source: {get_attr: [OVNDbsBase, role_data, logging_source]}
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logging_groups: {get_attr: [OVNDbsBase, role_data, logging_groups]}
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service_config_settings: {get_attr: [OVNDbsBase, role_data, service_config_settings]}
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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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