[K12OSN] RSYNC Question

Stephen Liu satimis at icare.com.hk
Thu Mar 11 11:06:00 UTC 2004


- snip -

> If you have a second server which can handle all of the same tasks (or
> some subset of critical tasks)you can set that server up with the same
> services enabled and ready to go.  This is where 'rsync' and 'cron' come
> in to play.  Set up an 'rsync' command to synchronize the critical data
> from the main server (home directories, mail spool, web content etc) to
> the spare server.  Use 'cron' to run the 'rsync' command on a regular
> basis (once a day, once an hour, depends on your needs). this will keep
> the data up to date on the spare server.  Then on the spare server I
> would create a 'swapserver' script to change the IP address to that of
> the main server, and enable the services required.

Hi Paul,

Kindly advise what is the difference in application between 'rsync' and 
'clustering'

TIA

B.R.
Stephen Liu


> Once all that is in place, then all you would need to do to swap in the
> server in the event of a failure would be to log in to the spare and run
> the 'swapserver' script.
>
> You could do some googleing for terms like 'hot spare' 'heartbeat' and
> 'disaster recovery'  for some additional info.
>
> Paul Davison





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