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Re: Recovery - New Slave PostgreSQL 9.2 - Mailing list pgsql-admin

From drum.lucas@gmail.com
Subject Re: Recovery - New Slave PostgreSQL 9.2
Date
Msg-id CAE_gQfVzvXRZhL84F9BZes8chixU2ry4kbMvpo0GKKbf_A=ZnA@mail.gmail.com
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In response to Re: Recovery - New Slave PostgreSQL 9.2  (Shreeyansh Dba <shreeyansh2014@gmail.com>)
Responses Re: Recovery - New Slave PostgreSQL 9.2
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Hi, thanks for your reply... I've been working on this problem for 20h =(

# cat postgresql.conf | grep synchronous_standby_names
#synchronous_standby_names = '' - It's commented 

# cat postgresql.conf |  grep application_name
log_line_prefix = '%m|%p|%q[%c]@%r|%u|%a|%d '
( %a = application name )

I can't resyc all the DB again, because it has 2TB of data :(

Is there anything else I can do?
Thank you



Lucas Possamai


On 10 January 2016 at 04:22, Shreeyansh Dba <shreeyansh2014@gmail.com> wrote:


On Sat, Jan 9, 2016 at 3:28 PM, drum.lucas@gmail.com <drum.lucas@gmail.com> wrote:
My recovery was like that!
I was already using that way.. I still have the problem =\

Is there anything I can do?



Lucas Possamai


On 9 January 2016 at 22:53, Shreeyansh Dba <shreeyansh2014@gmail.com> wrote:

Hi Lucas,

Yes , now recovery.conf looks good.
Hope this solve you problem.


Thanks and regards,
ShreeyanshDBA Team
Shreeyansh Technologies



On Sat, Jan 9, 2016 at 3:07 PM, drum.lucas@gmail.com <drum.lucas@gmail.com> wrote:
Hi there!

Yep, it's correct: 
It looks like You have a set up A (Master) ---> B (Replica) ---> C Replica (Base backup from Replica B)

Master (A): 192.168.100.1
Slave1 (B): 192.168.100.2
Slave2 (C): 192.168.100.3

My recovery.conf in slave2(C) is:
restore_command = 'exec nice -n 19 ionice -c 2 -n 7 ../../bin/restore_wal_segment.bash "../wal_archive/%f" "%p"'
archive_cleanup_command = 'exec nice -n 19 ionice -c 2 -n 7 ../../bin/pg_archivecleaup_mv.bash -d "../wal_archive" "%r"'
recovery_target_timeline = 'latest'
standby_mode = on
primary_conninfo = 'host=192.168.100.2 port=5432 user=replicator application_name=replication_slave02'
So, seems to be right to me... Is that u mean?

Thanks


Lucas Possamai


On 9 January 2016 at 22:25, Shreeyansh Dba <shreeyansh2014@gmail.com> wrote:
On Sat, Jan 9, 2016 at 8:29 AM, drum.lucas@gmail.com <drum.lucas@gmail.com> wrote:
* NOTE: I ran the pg_basebackup from another STANDBY SERVER. Not from the MASTER



Lucas Possamai


On 9 January 2016 at 15:28, drum.lucas@gmail.com <drum.lucas@gmail.com> wrote:
Still trying to solve the problem...
Anyone can help please?

Lucas


Lucas Possamai


On 9 January 2016 at 14:45, drum.lucas@gmail.com <drum.lucas@gmail.com> wrote:
Sure... Here's the total information:

recovery.conf:
restore_command = 'exec nice -n 19 ionice -c 2 -n 7 ../../bin/restore_wal_segment.bash "../wal_archive/%f" "%p"'
archive_cleanup_command = 'exec nice -n 19 ionice -c 2 -n 7 ../../bin/pg_archivecleaup_mv.bash -d "../wal_archive" "%r"'
recovery_target_timeline = 'latest'
standby_mode = on
primary_conninfo = 'host=192.168.100.XX port=5432 user=replicator application_name=replication_new_slave'



Lucas Possamai


On 9 January 2016 at 14:37, Ian Barwick <ian@2ndquadrant.com> wrote:
On 16/01/09 9:23, drum.lucas@gmail.com wrote:
> Hi all!
>
> I've done the pg_basebackup from the live to a new slave server...
>
> I've recovery the wal files, but now that I configured to replicate from the master (recovery.conf) I got this error:
>
> ../wal_archive/0000000400000C68000000C8` not found
> ../wal_archive/00000005.history` not found
>
> FATAL:  timeline 2 of the primary does not match recovery target timeline 1

Can you post the contents of your recovery.conf file, suitably
anonymised if necessary?

Regards

Ian Barwick


Hi Lucas,

I followed your question I generated the same error:

cp: cannot stat `/pgdata/arch/00000003.history': No such file or directory
2016-01-09 14:11:42 IST FATAL:  timeline 1 of the primary does not
match recovery target timeline 2

It looks like You have a set up A (Master) ---> B (Replica) ---> C Replica (Base backup from Replica B)

It seems you have used recovery.conf (to replicate from master to slave) to new replica setup C and there is high probability not changing the primary connection info
in C's recovery.conf (Replica B's Connection info)

During testing providing B's connection info in C's recovery.conf resolved the issue.

Please verify the Primary connection info parameter in recovery.conf (C replica) might resolve your problem.



Thanks and regards,
ShreeyanshDBA Team
Shreeyansh Technologies





Hi Lucas,

It looks like application_name parameter that set in recovery.conf may mismatch. 
Please verify the value to synchronous_standby_names  value set in the postgresql.conf of Replica - C and the value that using as application_name in recovery.conf

Also, check whether the Async replication works with out using application_name in recovery.conf of replica -C and check the status in pg_stat_replication catalog table.


Thanks and regards
ShreeyanshDBA Team
Shreeyansh Technologies

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