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PostgreSQL + haproxy with multiple IP
I have setup a postgresql cluster (with one master node and one slave/standby node) using Patroni. I want to use HA proxy in front of my cluster.
I think in this case HA proxy itself could be a single point of failure.
So to avoid this problem if I use multiple nodes for the HA proxy. Then not sure how client will handle the connection in case of failure of IP of HA proxy to which client is corrently connected.
( Or we can say how client/client_app will switch over between different available IP’s of HA proxy).