Hey,

This is an example of what I see when starting up a replica and attaching
it to a master.

In this case the master is in timeline 3, but the archive log goes up to
timeline 6.

2015-05-08 16:23:07 AEST @ ( 0 00000)LOG:  database system was interrupted;
last known up at 2015-05-08 16:21:14 AEST
2015-05-08 16:23:07 AEST @ ( 0 00000)LOG:  restored log file
"00000004.history" from archive
2015-05-08 16:23:08 AEST @ ( 0 00000)LOG:  restored log file
"00000005.history" from archive
2015-05-08 16:23:08 AEST @ ( 0 00000)LOG:  restored log file
"00000006.history" from archive
scp: /backup/production/archived_wals/00000007.history: No such file or
directory
2015-05-08 16:23:08 AEST @ ( 0 00000)LOG:  entering standby mode
2015-05-08 16:23:09 AEST @ ( 0 00000)LOG:  restored log file
"00000006.history" from archive
scp: /backup/production/archived_wals/000000060000000B000000C2: No such
file or directory
scp: /backup/production/archived_wals/000000050000000B000000C2: No such
file or directory
scp: /backup/production/archived_wals/000000040000000B000000C2: No such
file or directory
2015-05-08 16:23:11 AEST @ ( 0 00000)LOG:  restored log file
"000000030000000B000000C2" from archive
2015-05-08 16:23:11 AEST @ ( 0 XX000)FATAL:  requested timeline 6 is not a
child of this server's history
2015-05-08 16:23:11 AEST @ ( 0 XX000)DETAIL:  Latest checkpoint is at
B/C2000060 on timeline 3, but in the history of the requested timeline, the
server forked off from that timeline at B/BE000060.
2015-05-08 16:23:11 AEST @ ( 0 00000)LOG:  startup process (PID 21893)
exited with exit code 1
2015-05-08 16:23:11 AEST @ ( 0 00000)LOG:  aborting startup due to startup
process failure


Cheers,


James Sewell,
PostgreSQL Team Lead / Solutions Architect
______________________________________


 Level 2, 50 Queen St, Melbourne VIC 3000

*P *(+61) 3 8370 8000  *W* www.lisasoft.com  *F *(+61) 3 8370 8099


On Fri, May 8, 2015 at 4:28 PM, James Sewell <james.sew...@lisasoft.com>
wrote:

> Hello All,
>
> I am running 9.4 on Centos.
>
> I have three servers, one master and two slaves. The slaves have the
> following recovery.conf
>
> standby_mode = 'on'
> primary_conninfo = 'user=postgres host=mastervip port=5432'
> restore_command = 'scp -o BatchMode=yes postgres@backuphost:/archived_wals/%f
> %p'
> recovery_target_timeline= 'latest'
>
> Is there any way to combine following
>
>    - a master switch (ie: if node1 dies and node2 is promoted then node3
>    follows node2)
>    - using a WAL archive, such that if node2 goes down for two days it
>    will get WALs from the archive if they are no longer on the master
>
> At the moment the master switch works fine, but if I was to have a WAL
> archive with multiple timelines in it then I would end up in the newest
> timeline.
>
> I suppose what I want is the following:
>
> If I am a streaming replica only follow streamed timeline switches, not
> archive timeline switches.
>
> Obviously if I am not a streaming replica I need to follow archive
> timeline switches so I don't break PIT recovery.
>
> Possible?
>
>
> James Sewell,
> PostgreSQL Team Lead / Solutions Architect
> ______________________________________
>
>
>  Level 2, 50 Queen St, Melbourne VIC 3000
>
> *P *(+61) 3 8370 8000  *W* www.lisasoft.com  *F *(+61) 3 8370 8099
>
>

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