PGPOOL_SHOW1
Show the value of a configuration parameter
Usage
PGPOOL SHOW
configuration_parameter
PGPOOL SHOW
configuration_parameter_group
PGPOOL SHOW
ALL
Overview
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.
Parameters
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 four 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.
Examples
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)
Notes
- 1.
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SHOW
https://www.postgresql.org/docs/current/static/sql-show.html
Releases
3 releases since Debian 11 (Bullseye); the text changed 2 times.