Health Check to Prevent Primary Flapping
Feature Summary and Revision History
Applicable Product(s) or Functional Area |
CPS |
Applicable Platform(s) |
Not Applicable |
Default Setting |
Disabled - Configuration Required |
Related Changes in This Release |
Not Applicable |
Related Documentation |
CPS Installation Guide for VMware CPS Installation Guide for OpenStack |
Revision Details |
Release |
---|---|
First introduced |
20.2.0 |
Feature Description
In GR setup, when the primary of a replica-set keeps on flapping between the sites (Site1 and Site2) because of continuous reboot scenario in Session Manager VMs, the application fails to detect the appropriate primary member for write operation which brings QNS process down.
CPS now supports health check to prevent primary flapping from impacting the remote sites.
To enable this feature in VMware environment, the flag prevent_primary_flapping_enabled
is set to true in Configuration.csv file
To enable this feature in OpenStack environment, the flag preventPrimaryFlappingEnabled
is set to true in YAML file.
Restriction |
|
For more information, see the following sections:
-
General Configuration Parameters table in the CPS Installation Guide for VMware
-
Configuration Parameters - HA System, Enable Health Check to Prevent Flapping, and Disable Health Check to Prevent Flapping sections in the CPS Installation Guide for OpenStack