BUG #13573: Load Balancing

The following bug has been logged on the website:

Bug reference: 13573
Logged by: Ha Le
Email address: nlp.sr@shaw.ca
PostgreSQL version: 9.4.3
Operating system: Ubuntu 14
Description:

Dear Michael,

It is me, Quan Ha Le from Blackberry company,

This time may you support me with 2 questions:

I have a Master and a Standby by Repmgr Cloning, on a Postgresql Database
cluster

QUESTION 1: Why my pg_xlog for Master is huge up to 8GB and it doesnot clean
up (removal of wal logs) automatically ?
And the pg_xlog for Standby is only 300MB ?

The pg_resetxlog needs running off-line (by service postgresql stop), but
how to run online (during postgresql service still on) because there is a
software connect to my master all the time ?

QUESTION 2: Is there any way to make HAPROXY+PGBOUNCER Load balancing for my
Postgresql Master and Standby ? I can only read /write on the Master and the
Reads donot load balancing to happen at the same time on Standby ?

Best,
Quan Ha Le.

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