Re: postgres standby won't start

Hi Adrian,
After a few attempts I used the following (without method=stream as it is not working on 9.1) and restored the DB on
standbysite successfully. The log says it is connecting to primary 
streaming replication successfully connected to primary

but still complains about some log files.

2015-10-08 00:47:37 EDT LOG:  streaming replication successfully connected to primary
2015-10-08 00:53:53 EDT LOG:  received smart shutdown request
2015-10-08 00:53:53 EDT FATAL:  terminating walreceiver process due to administrator command
2015-10-08 00:53:53 EDT LOG:  shutting down
2015-10-08 00:53:53 EDT LOG:  database system is shut down
2015-10-08 00:54:04 EDT LOG:  database system was shut down in recovery at 2015-10-08 00:53:53 EDT
cp: cannot stat `/db_logs/pgsql/archive/0000001A.history': No such file or directory
2015-10-08 00:54:04 EDT LOG:  entering standby mode
cp: cannot stat `/db_logs/pgsql/archive/0000001A00000845000000C9': No such file or directory
2015-10-08 00:54:04 EDT LOG:  redo starts at 845/C9000020
2015-10-08 00:54:04 EDT LOG:  consistent recovery state reached at 845/CA000000
2015-10-08 00:54:04 EDT LOG:  database system is ready to accept read only connections
cp: cannot stat `/db_logs/pgsql/archive/0000001A00000845000000CA': No such file or directory
2015-10-08 00:54:04 EDT LOG:  streaming replication successfully connected to primary
2015-10-08 00:56:21 EDT LOG:  connection received: host=[local]
2015-10-08 00:56:21 EDT LOG:  connection authorized: user=postgres database=clients


Thanks
Kumar Ramalingam
X6015288


-----Original Message-----
From: Adrian Klaver [mailto:adrian.klaver@aklaver.com]
Sent: Wednesday, October 07, 2015 8:06 PM
To: Ramalingam, Sankarakumar; pgsql-general@postgresql.org
Subject: Re: [GENERAL] postgres standby won't start

On 10/07/2015 01:30 PM, Ramalingam, Sankarakumar wrote:
> Hello Adrian,
> Can I use this command so that all the data is streamed directly to the target. Target is pretty much unusable now.
ShouldI get rid of all items under my $PGDATA and leave the empty before doing the following? 
>
> pg_basebackup -h <my target hostname>  -D <my target host directory>
> -P -U replication --xlog-method=stream

Just to be sure the target is the standby server, correct?

If so you do not want this:

-h <my target hostname>

-h is for the server you are taking the backup of, or to put it another way the flow is from -h to -D.

If you are running pg_basebackup on the same machine as the primary then:

pg_basebackup  -D <my target host directory>  -P -U replication --xlog-method=stream

This assumes there is only one instance of Postgres running on that machine and it is running on port 5432. If not then
youwill need to specify -p <correct_port> 

pg_basebackup is a client program, so like other such programs you have to tell it what database(cluster) to connect to
usingthe normal switches, see below. Actually pg_basebackup does not connect to a specific database but to the database
cluster,so any database name you supply will be ignored. 

http://www.postgresql.org/docs/9.4/interactive/app-pgbasebackup.html

"The following command-line options control the database connection parameters."

>
>
>
> Thanks
> Kumar Ramalingam
> X6015288
>
>



--
Adrian Klaver
adrian.klaver@aklaver.com
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