Do you have any tutorial about patroni + ha-proxy with postgresql (what about load balancing with this setup?)
Regards.
-----Mensaje original----- De: Stephen Frost [mailto:sfrost@snowman.net] Enviado el: martes, 6 de febrero de 2018 06:12 a. m. Para: Dhandapani Shanmugam CC: pgsql-admin; pgsql-general@postgresql.org Asunto: Re: PostgreSQL Active-Active
Greetings,
* Dhandapani Shanmugam (postgresql95@gmail.com) wrote: > Do we have active-active setup in postgreSQL, like we have in oracle RAC?. > Sorry if this question has been addressed already. What will be best > open source HA for postgresql with zero RTO and RPO.
What you're probably looking for is a 3 (or more) node setup with patroni, etcd, and synchronous replication. Note that this will be a shared-nothing architecture, avoiding the risk that something bad happens with the storage system but requiring that the data be replicated multiple times. Using synchronous replication means that you have to have the nodes all close to each other, of course, but meets the zero RPO. Zero RTO is just silly, but with patroni and haproxy you can detect and failover pretty darn fast.