0 
1 
===================================
 node_id | hostname | port | status | pg_status | lb_weight |  role   | pg_role | select_cnt | load_balance_node | replication_delay | replication_state | replication_sync_state | last_status_change  
---------+----------+------+--------+-----------+-----------+---------+---------+------------+-------------------+-------------------+-------------------+------------------------+---------------------
 0       | pgdb-a   | 5432 | up     | up        | 0.500000  | primary | primary | 18784      | true              | 0                 |                   |                        | 2023-04-21 10:57:31
 1       | pgdb-b   | 5432 | up     | up        | 0.500000  | standby | standby | 13509      | false             | 0                 |                   |                        | 2023-04-21 10:57:31
(2 rows)