Re: WAL shipping question

SHARMILA JOTHIRAJAH wrote:
>> Im trying to play a bit with log shipping between 2 servers primary
> and standby. These servers are running versions 8.3betat3. I had set up
> continuous archiving at the primary server. The manuals' example of
> archive_command is
>> archive_command = 'cp -i %p /mnt/server/archivedir/%f </dev/null'
>>
>> This basically archives the data in the primary server
> itself...right!!!
>> But how can I set up continuous archiving from primary to a directory
> (WAL archive directory)
>> on the stand-by server ?
>
>>> a. Mount the remote directory via NFS/SMBFS/...
>>> b. Use a remote copy, e.g. scp, FTP...
>
>
> Thanks...
> I tried this command to both copy in the primary server and scp to standby server.
>
> archive_command = 'cp -i "%p" .../archivedir/"%f" &&
> scp -B "%p".../archivedir/"%f" "%p" user(at)172(dot)31(dot)0(dot)21:/....archivedir/"%f"'
>
> cp works but scp doesnt work. Is it becoz scp generally asks for password. I can do scp or ssh without password authentication but Im not sure if it is safe to do that.
>
> What is the alternative for getting this done?

You can generate a public/private key pair on the database server and
store the public version in ~/.ssh/authorized_keys on the remote server.
Google for details.

--
Richard Huxton
Archonet Ltd