[pgpool-general: 6457] Load balancing and unused status

[Fernando Luizão]

Hi,

I'm new to pgpool, and I'm trying to use the load balancer.
I have a primary and a hot standby, using native streaming replication.

Versions:
postgresql - 11.2
pgpool - 4.0.2

Here's what I changed in pgpool.conf:

listen_addresses = '*'
port = 5432

backend_hostname0 = '192.168.51.186'
backend_port0 = 5433
backend_weight0 = 0.4
backend_data_directory0 = '/var/lib/postgresql/11/main'
backend_flag0 = 'ALWAYS_MASTER'

backend_hostname1 = '192.168.51.185'
backend_port1 = 5433
backend_weight1 = 0.6
backend_data_directory1 = '/var/lib/postgresql/11/main'

load_balance_mode = on

master_slave_mode = on
master_slave_sub_mode = 'stream'

However, when I inspect the nodes on pgpool, I get the following:

postgres=# show pool_nodes;
 node_id |    hostname    | port | status | lb_weight |  role   |
select_cnt | load_balance_node | replication_delay | last_status_change
---------+----------------+------+--------+-----------+---------+------------+-------------------+-------------------+---------------------
 0       | 192.168.51.186 | 5433 | up     | 0.400000  | primary | 6113
 | true              | 0                 | 2019-03-14 11:39:15
 1       | 192.168.51.185 | 5433 | unused | 0.600000  | standby | 0
  | false             | 0                 | 2019-03-14 11:39:15

All queries are being redirected to primary. I can query the standby
directly, so everything seems fine with my replication setup.

Why it says the standby is unused? I'm missing something in the
configuration?

Thanks,
Fernando
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