/usr/bin/pcp_attach_node
/usr/bin/pcp_detach_node
/usr/bin/pcp_node_count
/usr/bin/pcp_node_info
/usr/bin/pcp_pool_status
/usr/bin/pcp_proc_count
/usr/bin/pcp_proc_info
/usr/bin/pcp_promote_node
/usr/bin/pcp_recovery_node
/usr/bin/pcp_stop_pgpool
/usr/bin/pcp_systemdb_info
/usr/bin/pg_md5
/usr/bin/pgpool
You may install this package on CentOS with
yum
install postgresql-pgpool-II