So unexpectedly with the rpms, it installed it on a different place and it is working from command line [root@cmd-dev1 pgbouncer]# /bin/pgbouncer /etc/pgbouncer/pgbouncer.ini -u postgres 2018-09-19 15:38:36.081 46322 LOG File descriptor limit: 1024 (H:4096), max_client_conn: 100, max fds possible: 230 2018-09-19 15:38:36.082 46322 LOG Stale pidfile, removing 2018-09-19 15:38:36.082 46322 LOG listening on 0.0.0.0:6543 2018-09-19 15:38:36.082 46322 LOG listening on ::/6543 2018-09-19 15:38:36.083 46322 WARNING Cannot listen on unix:/tmp/.s.PGSQL.6543: bind(): Address already in use 2018-09-19 15:38:36.083 46322 LOG process up: pgbouncer 1.8.1, libevent 2.0.21-stable (epoll), adns: c-ares 1.10.0, tls: OpenSSL 1.0.2k-fips 26 Jan 2017 [root@cmd-dev1 ~]# psql -U ncontu -p 6543 cmd3dev -h IP_ADD Password for user ncontu: psql (10.5) Type "help" for help. cmd3dev=# \q So at this point... I don't really know why compiled from source it does not work. -- Sent from: http://www.postgresql-archive.org/PostgreSQL-general-f1843780.html