Re: How to get current timeline of host in postgres 10.4?

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От Debraj Manna
Тема Re: How to get current timeline of host in postgres 10.4?
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Msg-id CAF6DVKM1rX5GtqOr_yL-PwwnrpPrLBQ611jV2Dh=t-WT0i4gNA@mail.gmail.com
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Ответ на Re: How to get current timeline of host in postgres 10.4?  (Shreeyansh Dba <shreeyansh2014@gmail.com>)
Ответы Re: How to get current timeline of host in postgres 10.4?  (Rui DeSousa <rui.desousa@icloud.com>)
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Hi Shreeyansh

I have executed the below query on master. But it is giving output like below

postgres=# select pg_current_wal_lsn();
 pg_current_wal_lsn
--------------------
 0/4B17D198
(1 row)

In slave side it is saying timeline 6

ubuntu@platform1:~$ psql -h "localhost" -F' ' -c 'IDENTIFY_SYSTEM' 'dbname=replication replication=true' -U postgres
      systemid       | timeline |  xlogpos   | dbname
---------------------+----------+------------+--------
 6567260231287314481 |        6 | 0/4B1786E0 |

How can I get the timeline from the output of the query in master?



On Fri, Jun 15, 2018 at 9:57 PM, Shreeyansh Dba <shreeyansh2014@gmail.com> wrote:
Hi Debraj,

Execute below query on Master Side :
select pg_current_wal_lsn();
Execute below query on Slave Side:
using replication protocol (example from version 10.4)
psql -h "$host" -F' ' -c 'IDENTIFY_SYSTEM' 'dbname=replication replication=true'
Hope it helps.




On Fri, Jun 15, 2018 at 9:35 PM, Debraj Manna <subharaj.manna@gmail.com> wrote:
HI

Can someone let me know what is the best way to get current timeline of host (in both master and the slaves) in postgres 10.4?

Thanks,


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