I have 3 server (PgPool-II installed) and 2 Db (PostgreSQL installed) server.
I followed https://www.pgpool.net/docs/43/en/html/example-cluster.html
But can't execute psql template1 -c "CREATE EXTENSION pgpool_recovery"
What can i do?
Is it possible to install Postgresql and Pgpool on different servers in the first place?
You need to install Pgpool-II extension on the Postgresql machine to execute following command.
psql template1 -c "CREATE EXTENSION pgpool_recovery"
see details here: https://www.pgpool.net/docs/43/en/html/install-pgpool-recovery.html
And yes, its possible to have Pgpool-II and Postgresql on two different machines.