*Hi,* *I have postgresql 9.3 setup with 2 nodes (active/standby with streaming replication & continuos archiving).* *I have created 2 failover & failback script in order to perform a switchover between the DB servers:* *1. failover - create a trigger file in order to promote the new primary.* *2. failback - perform a base backup as mentions in :* * a. start backup on the primary.* * b. stop the failed node .* didn't delete the DB directory on the failed node * c. performing rsync between the nodes.* * d.stopping the backup on the primary.* * e.performing rsync on the pg_xlog.* * f. creating a recovery.conf*
* standby_mode = 'on'* * primary_conninfo = 'host=10.50.1.153 port=5432 user=usr password=pass'* * restore_command = 'scp 10.50.1.153:/home/postgres/archive/%f %p'* * trigger_file = '/home/postgres/databases/fabrix/trigger'* * archive_cleanup_command = 'ssh 10.50.1.153 /home/postgres/pg_utils/archive_cleanup.sh %r'* * g. starting the failed node as secondary.* *the switchover method:* *1. stop the primary node.* *2. promote the secondary node (failover.sh).* *3. perform failback on the failed node.* *4. start the failed node.* *this method works great! * *but if I perform multiple switchovers (>20), each time the new primary gets promoted (trigger file) - it takes longer because it searches the timelines on the archive. * *is there any way to prevent the multiple 'scp' archive commands which makes the promotion longer! * *for example:* *[2015-12-12 20:35:10.769 IST] LOG: trigger file found: /home/postgres/databases/fabrix/trigger* *[2015-12-12 20:35:10.769 IST] FATAL: terminating walreceiver process due to administrator command* *scp: /home/postgres/archive/0000009400000002000000DC: No such file or directory* *[2015-12-12 20:35:10.893 IST] LOG: record with zero length at 2/DC000168* *[2015-12-12 20:35:10.893 IST] LOG: redo done at 2/DC000100* *scp: /home/postgres/archive/0000009400000002000000DC: No such file or directory* *scp: /home/postgres/archive/0000009300000002000000DC: No such file or directory* *scp: /home/postgres/archive/0000009200000002000000DC: No such file or directory* *.* *.* *.* *scp: /home/postgres/archive/0000009100000002000000DC: No such file or directory* *scp: /home/postgres/archive/0000009000000002000000DC: No such file or directory* *scp: /home/postgres/archive/00000095.history: No such file or directory* *[2015-12-12 20:35:11.801 IST] LOG: selected new timeline ID: 149* *[2015-12-12 20:35:11.931 IST] LOG: restored log file "00000094.history" from archive* *[2015-12-12 20:35:12.173 IST] LOG: archive recovery complete* *[2015-12-12 20:35:12.181 IST] LOG: database system is ready to accept connections* *[2015-12-12 20:35:12.181 IST] LOG: autovacuum launcher started* *this could take for a least 1 min.....or more.* *is there any way to skip the timeline searching in order to decrease the promotion?* *Thanks,* *ShayC*