pgpool-II 4.1.4 Documentation
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# PGPOOL SHOW

## Name

PGPOOL SHOW -- show the value of a configuration parameter

## Synopsis

       PGPOOL SHOW configuration_parameter
       PGPOOL SHOW configuration_parameter_group
       PGPOOL SHOW ALL

## Description

`PGPOOL SHOW` will display the current value of Pgpool-II configuration parameters. This command is similar to the `SHOW` 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

`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.

  `other_pgpool`

    Configuration group of all watchdog node config parameters.

  `heartbeat`

    configuration group of all watchdog heartbeat node 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 black_function_list:

         PGPOOL SHOW black_function_list;
         black_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.
        other_pgpool_hostname0   | localhost               | Hostname of other pgpool node for watchdog connection.
        .
        .
        .
        ssl                      | off                     | Enables SSL support for frontend and backend connections
        (138 rows)

## See Also

PGPOOL SET

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