After searching (on www.postgresql.org/Google) I found that the following steps can be used to perform a switchover in Postgres (version 9.3):
Step 1. Do clean shutdown of Primary (-m fast or smart).
Step 2. Check for sync status and recovery status of Standby before promoting it.
Once Standby is in complete sync. At this stage we are safe to promote it as Primary.
Step 3. Open the Standby as new Primary by pg_ctl promote or creating a trigger file.
Step 4. Restart old Primary as standby and allow to follow the new timeline by passing "recovery_target_timline='latest'" in \
$PGDATA/recovery.conf file.
But I also read in one of the google post that this procedure requires the WAL archive location to exist on a shared storage to which both the Master and Slave should have access to.
So wanted to clarify if this procedure really requires the WAL archive location on a shared storage ?
