*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. *
*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*
