# psql -h localhost -U pgcheck -d postgres --pset pager=off -c "show pool_nodes"
 node_id |   hostname   | port | status | lb_weight |  role   | select_cnt | load_balance_node | replication_delay | replication_state | replication_sync_state | last_status_change  
---------+--------------+------+--------+-----------+---------+------------+-------------------+-------------------+-------------------+------------------------+---------------------
 0       | customerdb-a | 5432 | up     | 0.500000  | primary | 37720815   | true              | 0                 |                   |                        | 2023-09-26 12:58:24
 1       | customerdb-b | 5432 | down   | 0.500000  | standby | 0          | false             | 0                 |                   |                        | 2023-09-21 00:33:43
(2 rows)