do you know what the error message is ?
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creating standby Postgresql database server using WAL
I have two identical Cent OS 5.3 computers configured identically with Postgresql 8.3.7. I'm trying to create a warm standby using WAL following the instructions at:
http://www.postgresql.org/
Both servers have access to the directory /path/to/archive
I configured postgresql.conf on the master server with:
archive_mode = on
archive_command = 'cp "%p" /path/to/archive/"%f"'
arvhice_timeout = 300
Then restarted postgresql. Then I logged into the database "psql db" and created the base backup "SELECT pg_start_backup('label');"
Then on the slave postgresql server, I shut down the database, and created the recovery.conf file with
restore_command = 'cp /path/to/archive/%f %p'
When I try to restart postgresql on the slave, I get an error. What am I doing wrong?
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Answers
The error message is:
cp cannot stat '/path/to/archive/00000001
This file doesn't exist, but it isn't created in the backup process.
And I realize the restore command is more complex than that, I'm just trying to do a single manual restore first, then I'll add the more complex automation.
I realize the step I missed was copying the data directory from the primary database server to the backup server before trying to "recover". What I was trying to do was initially load both databases the exact same way and then start reading WAL files from the 1st on the 2nd. This obviously didn't work... This question can be closed now.
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by: earthman2Posted on 2009-04-11 at 04:36:27ID: 24121655
The restore command is more complex than a simple copy.
see docs
http://www.postgresql.org/
24.4.1
"A working example of a waiting restore_command is provided as a contrib module named pg_standby. This example can be extended as needed to support specific configurations or environments."