[Linux-cluster] linux cluster on rhel5 without using gfs and shared storage

[Maciej Bogucki]

sajith napisał(a):
> Hai all,
> 
> 	I am new to linux cluster. I want to set up a two node cluster using
> rhcs. In my application I am using tomcat and mysql as database. My aim is
> to configure both servers in active-passive configuration. I have tested the
> failover of ip and process using conga. But I am stuck with the
> configuration of mysql failover. I am confused with how to make the data
> files redundant for mysql. If I am using nfs for data files the files are
> not accessible if nfs server is down. How can I create an online back up of
> my data files so that if my main server is down then also I can access my
> data from the online backup? I don't have gfs and SAN storage. My data files
> and application reside in same machine. Please help

Hello,

You can use drbd[1] to mirror block device via network. You also need
some automatic failover mechanism fe. RHCS or heratbeat[2].

[1] - http://www.drbd.org/
[2] - http://www.linux-ha.org/

Best Regards
Maciej Bogucki