[pgpool-general: 6111] Re: How can I send a query to any replication node?

[Bo Peng]

Hi,

> There is the comment /*NO LOAD BALANCE*/ to sent a query to the primary
> node... is there a similar way to send the query to a replication node.

You mean master_slave_mode using PostgreSQL streaming replication?
It can not be configure for particular standby node.


But you can send all SELECT queries to standby node by using following parameters:
  
  backend_weight0 = 0
  backend_weight1 = 1
 
Also you can specify the list of "database-name:node id" pairs to 
send SELECT queries to a particular backend node for a particular database connection. 

  database_redirect_preference_list

http://www.pgpool.net/docs/latest/en/html/runtime-config-load-balancing.html#GUC-DATABASE-REDIRECT-PREFERENCE-LIST


On Wed, 30 May 2018 08:56:17 -0400
Araujo Manuel Emilio <emilio.araujo at gmail.com> wrote:

> Hello guys.
> 
> There is the comment /*NO LOAD BALANCE*/ to sent a query to the primary
> node... is there a similar way to send the query to a replication node.
> 
> Environment:
> - pgpool version: 3.6.4 (subaruboshi)
> - nodes count: 2 (primary and replicated).
> - replication mode: PostgreSQL native,  hot standby streaming replication
> 
> 
> Regards,


-- 
Bo Peng <pengbo at sraoss.co.jp>
SRA OSS, Inc. Japan