Database Administrators Asked by Jayson Gonzaga on December 31, 2020
I have successfully set up a postgres
master-replica with repmgr
for automatic failover which can be found over here https://github.com/mgonzaga1990/pg-rpi-failover
Now what I’m planning to do next is to set up HAProxy
However, I can’t find resources that could teach me how to properly set up load balancing together with repmgr
.
My Scenario is
When master
failed. One of the replicas/slave/standby servers will become the master.
Now if that happened should I always change the configuration of HAProxy
do we have a way to make it automatic as well?? where HAProxy
could detect who the next master is?? Then route every request to do WRITE
operations on that newly elected master
?
Moreover, the old master; once comes back up will not be the master but becomes slave/replica or standby.
I’m using postgres-9.6
Thanks for the response.
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