This information may not be current, but I seem to remember hearing some 
really nasty stories about people putting MySQL data dirs on NFS 
exports.  I would research the appropriate documentation before 
attempting such a configuration.

-----Original Message-----
From: mysql-digest-help [mailto:[EMAIL PROTECTED]
Sent: Tuesday, December 02, 2003 5:10 PM
To: halla3; mysql
Cc: John.Griffin
Subject: RE: mysql disaster recovery


Hi Andrew,

I am not a Guru. I would suggest that you look at MySQL's excellent 
replication facility rather than NFS mount a drive. Having your data on 
an NFS mounted drive will significantly degrade the performance of your 
database. Replication will not.


John Griffin

-----Original Message-----
From: Andrew Hall [mailto:[EMAIL PROTECTED]
Sent: Tuesday, December 02, 2003 4:51 PM
To: [EMAIL PROTECTED]
Subject: mysql disaster recovery


Greetings Gurus,

I have a mysql server that I need to create a disaster recovery system
for.  What I am planning on doing is putting the data dir on a NFS
mounted directory so that I can start mysql on either of two servers in
case one dies.  The inbound connections would be load balanced in a fail
over scenario, so the IP that clients will connect to will be on the
load balancer.

I'm wondering if there is anything already developed that would test
mysql on the primary server, and if its not functioning, kill any
remaining mysql processes if necessary, and start it on the secondary.  
This logic seems to be the biggest problem.

Any suggestions, or other methodologies to implement this would be
welcome. 

Thank you for your time in advance,

Andrew


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