Clustered Ignite Server

[hpuxrox]

Has anyone had any experance with clustering an Ignite server.

So far I have,

Install
MC/Serviceguard 11.16
MC/Serviceguard NFS toolkit
Ignite 5.4.50 both nodes

Create VG, LVOL and file systems, export map, check swicthing exclusivy, etc, etc, etc,

Create ignite package in SG
IP 0.0.0.0
VG[0] = vgign01
LV[0] = /dev/vgign01/lvol1
FS[0] = /var/opt/ignite


Make sure that all golden image files refernce the package IP for NFS.


Please let me know if you know any "gotcha"s

Thanks,

Yates

[Steven E. Protter · Accepted solution]

I've seen such servers in operation. They key issue is for the ignite images to be on a volume group on shared storage.

If you task an IP address to fail over and the disk is accessible by all nodes, there should be a momentary delay as the volume group on the primary node is deactivated and the volume group on the secondary is activated.

I saw the finished product and was told that it was a little bumpy getting it set up and that it was very important to test the failover while an ignite image was reading or writing or both.

Also, they chose to store the images outside of the /Var filesystem since thats generally a local filesystem, not something to fail over from machine to machine.

You could get around that by mounting a filesystem from /var/opt/ignite folder to provide a common area for configuration files.

SEP

[jamesps]

I am trying to do the same thing using RAID1 (VxVM) and VCS.
Have you had any issues with booting clients off of the virtual IP of the cluster? Have you used a "boot helper"?

Thanks,
James