pcp_node_info

pgpool-II 4.0.1 Documentation
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Name

pcp_node_info -- displays the information on the given node ID

Synopsis

pcp_node_info [ option ...] [ node_id ]

Description

pcp_node_info displays the information on the given node ID.

Options

-n node_id --node-id= node_id: The index of backend node to get information of.
Other options: See pcp_common_options .

Example

Here is an example output:

$ pcp_node_info -h localhost -U postgres 1
/tmp 11003 2 0.500000 up standby 208 2018-07-03 08:26:39

The result is in the following order:

1. hostname
2. port number
3. status
4. load balance weight
5. status name
6. backend role
7. replication delay
8. last status change time

Status is represented by a digit from [0 to 3].

0 - This state is only used during the initialization. PCP will never display it.
1 - Node is up. No connections yet.
2 - Node is up. Connections are pooled.
3 - Node is down.

The load balance weight is displayed in normalized format.

The --verbose option can help understand the output. For example:

$ pcp_node_info --verbose -h localhost -U postgres 1
Hostname          : /tmp
Port              : 11003
Status            : 2
Weight            : 0.500000
Status Name       : up
Role              : standby
Replication Delay : 208
Last Status Change: 2018-07-03 08:26:39