DOKK / manpages / debian 12 / pgpool2 / PGPOOL_SHOW.1.en
PGPOOL SHOW(1) pgpool-II 4.3.5 Documentation PGPOOL SHOW(1)

PGPOOL_SHOW - show the value of a configuration parameter



   PGPOOL SHOW configuration_parameter


   PGPOOL SHOW configuration_parameter_group


   PGPOOL SHOW ALL

PGPOOL SHOW will display the current value of Pgpool-II configuration parameters. This command is similar to the SHOW[1] command in PostgreSQL with an addition of PGPOOL keyword to distinguish it from the PostgreSQL SHOW command.

configuration_parameter

The name of a Pgpool-II configuration parameter. Available parameters are documented in Chapter 5, Server Configuration, in the documentation.


Note
If the parameter contains uppercase letters (e.g. delegate_IP), the parameter name must be enclosed in double quotes.

configuration_parameter_group

The name of the Pgpool-II configuration parameter group. Currently there are three parameter groups.

backend

Configuration group of all backend config parameters.

watchdog

Configuration group of all watchdog node config parameters.

heartbeat

configuration group of all watchdog heartbeat config parameters.

health_check

configuration group of all health check parameters.

ALL

Show the values of all configuration parameters, with descriptions.

Show the current setting of the parameter port:

PGPOOL SHOW port;
port
------
9999
(1 row)

Show the current setting of the parameter write_function_list:

PGPOOL SHOW write_function_list;
write_function_list
---------------------
nextval,setval
(1 row)

Show the current settings of all the configuration parameters belonging to backend group:

PGPOOL SHOW backend;
item                     |          value          |              description
-------------------------+-------------------------+-----------------------------------------------------------
backend_hostname0        | 127.0.0.1               | hostname or IP address of PostgreSQL backend.
backend_port0            | 5434                    | port number of PostgreSQL backend.
backend_weight0          | 0                       | load balance weight of backend.
backend_data_directory0  | /var/lib/pgsql/data     | data directory of the backend.
backend_flag0            | ALLOW_TO_FAILOVER       | Controls various backend behavior.
backend_hostname1        | 127.0.0.1               | hostname or IP address of PostgreSQL backend.
backend_port1            | 5432                    | port number of PostgreSQL backend.
backend_weight1          | 1                       | load balance weight of backend.
backend_data_directory1  | /home/work/installed/pg | data directory of the backend.
backend_flag1            | ALLOW_TO_FAILOVER       | Controls various backend behavior.
(10 rows)

Show all settings:

PGPOOL SHOW ALL;
item                     |          value          |              description
-------------------------+-------------------------+-----------------------------------------------------------
backend_hostname0        | 127.0.0.1               | hostname or IP address of PostgreSQL backend.
backend_port0            | 5434                    | port number of PostgreSQL backend.
backend_weight0          | 0                       | load balance weight of backend.
backend_data_directory0  | /var/lib/pgsql/data     | data directory of the backend.
backend_flag0            | ALLOW_TO_FAILOVER       | Controls various backend behavior.
backend_hostname1        | 127.0.0.1               | hostname or IP address of PostgreSQL backend.
backend_port1            | 5432                    | port number of PostgreSQL backend.
backend_weight1          | 1                       | load balance weight of backend.
backend_data_directory1  | /home/work/installed/pg | data directory of the backend.
backend_flag1            | ALLOW_TO_FAILOVER       | Controls various backend behavior.
hostname0                | localhost               | Hostname of pgpool node for watchdog connection.
.
.
.
ssl                      | off                     | Enables SSL support for frontend and backend connections
(138 rows)

PGPOOL SET (PGPOOL_SET(1))

1.

SHOW
https://www.postgresql.org/docs/current/static/sql-show.html
2023 pgpool-II 4.3.5