[pgpool-general: 4243] Load balancing in master slave not working, backends stanby status 0

[Roman Barczyński]

Hello,

I can't make load balancing to work, all queries are sent to backend0
(primary), even if I set very small weight:

$ psql -h pgpool -c "show pool_nodes;" -n
 node_id |  hostname  | port | status | lb_weight |  role
---------+------------+------+--------+-----------+---------
 0       | 10.0.0.1   | 5432 | 2      | 0.000500  | primary
 1       | 10.0.0.2   | 5432 | 0      | 0.499750  | standby
 2       | 10.0.0.3   | 5432 | 0      | 0.499750  | standby

Each node is accesible and if I swap backend_host0 for second IP every
query is sent to it. Additionally primary node is not detected when its IP
is in backend_host1 or backend_host2:

$ psql -h pgpool -c "show pool_nodes;" -n
 node_id |  hostname  | port | status | lb_weight |  role
---------+------------+------+--------+-----------+---------
 0       | 10.0.0.2   | 5432 | 2      | 0.000500  | standby
 1       | 10.0.0.1   | 5432 | 0      | 0.499750  | standby
 2       | 10.0.0.3   | 5432 | 0      | 0.499750  | standby


My config:

listen_addresses = '*'
port = 5432
pcp_port = 9898

backend_hostname0 = '10.0.0.1'
backend_port0 = 5432
backend_weight0 = 1

backend_hostname1 = '10.0.0.2'
backend_port1 = 5432
backend_weight1 = 1000

backend_hostname2 = '10.0.0.3'
backend_port2 = 5432
backend_weight2 = 1000

enable_pool_hba = on
pool_passwd = 'pool_passwd'

ssl = off
num_init_children = 32
max_pool = 4
child_life_time = 300
child_max_connections = 0
connection_life_time = 0
client_idle_limit = 0

connection_cache = off
reset_query_list = 'ABORT; DISCARD ALL'

replicate_select = off

master_slave_mode = on
master_slave_sub_mode = 'stream'
sr_check_period = 0
sr_check_user = 'replica_test'
sr_check_password = 'replica_test'
delay_threshold = 0

wd_lifecheck_query = 'SELECT 1'
wd_lifecheck_dbname = 'template1'
wd_lifecheck_user = 'replica_test'
wd_lifecheck_password = 'replica_test'

load_balance_mode = on
ignore_leading_white_space = on
white_function_list = ''
black_function_list = 'nextval,setval'

Any advice?

Roman Barczyński
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