ServiceGuard Monocluster

[Maurizio Fulli]

Hi,
I want to configure service guard on one machine with the monocluster configuration.
I want to know, if is it possible, to do this, without assigns an Virtual ip to the package, and if the FS in monocluster can reside on volume gruop VG00.
Regards

Maurizio

[Victor Fridyev]

Hi Maurizio,

Definitely you can build SG cluster on one machine. You can use or not use floating IPs, you can use only vg00 volume group, you can use additional volume groups and file systems built on them with or withiut activating them from packages.
I'm not sure that you can mount a FS on vg00 from a SG package.

Good luck

[Stephen Doud]

Serviceguard does not need a volume group on a 1-node cluster. Neither is a cluster lock VG or quorum server necessary in a "monocluster". However, if you create a package that uses a logical volume in vg00, I suggest you don't reference that logical volume in the package control script... Just mount all lvols at boot time since no other node will access them.

A relocatable / virtual / floating IP is not a requirement of Serviceguard - it is a feature that you may take advantage of if you need it.

-=StephenDoud

[JW_8]

Hi Maurizio,
The answer to what you asked are yes to all of them. You may want to say a few more words on what you want to accomplish. Most of the people use 1-node cluster to do initial development for applications to be run in cluster environment. So, floating IP and separate VG are used even during the development. Hope this helps.
JW

[Scott J. Showalter]

You can even make a single node cluster without any packages. The purpose being network failover.

[RAJESH GANGADHARAN]

Let me add some more to scott,
We can have packages in single node cluster where we can automate the package (applciation ) restart in case of a failure.

Raj

[Geoff Wild]

Yes you can do what you want - I'm doing that on a B2000 Workstation - just for script testing.

Rgds...Geoff

[maurizio_6]

Thanks to all,
I've configured a SG monocluster without VIP, and it's configured on vg00, only for restart the package in case of failure, like RAJESH did.

regards
Maurizio

[Navid Hussain_1]

Hi Maurizio

You should appreciate for all participant suggestions in terms of assigning points as well.

It is just a reminder to you to encourage users to participate in forum.

Cheers ..

NAVID