MariaDB Minor Patch Upgrade [ 10.4.10 to 10.4.21 ] with HA Topology
MariaDB Minor Patch Upgrade [ 10.4.10 to 10.4.21 ] with HA Topology x This blog will be explain about , how to apply the Minor patch of MariaDB Version [ For eg : from 10.4.10 to 10.4.21 ] with HA Topology. [ If it is Tarball Installation ] Let us assume , We have Environment like this , 2 MariaDB Servers with GTID Replication running [ Main and Replica ] along with MaxScale 2 Servers [ Active and Passive MaxScale Servers ] and keepalived is enabled . High level steps Details Explanation with commands for above steps Rollback steps From 10.4.21 to 10.4.10 High level steps Patch Upgrade of MariaDB servers Step - 1 :- Check the status of " maxctrl list servers " command in Both Active and Passive MaxScale servers [ Maintenance mode ] Step - 2 :- In this step all Application are connected to Main server Step - 3 :- Perform the MariaDB version 10.4.10 to 10.4.21 in Current Replica Server of MariaDB Step - 4 :- Now clear the maintenance mode for replica [ Server 2 ] from Ac