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Re: How to fence a RHEL5 cluster with HP DL585 Rilo ?

 
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Devesh Pant_1
Esteemed Contributor

How to fence a RHEL5 cluster with HP DL585 Rilo ?

I have a working two node cluster with HP DL585 RHEL5 servers. Ehile shutting down any of the nodes it gets hung at
Stopping fencing ....

Also while coming up Starting fencing is a big delay.

I am not sure if we can live without fencing ?
even not very clear if the HP Rilo fencing works

Any help would be appreciated

thanks
DP
4 REPLIES 4
Steven E. Protter
Exalted Contributor
Solution

Re: How to fence a RHEL5 cluster with HP DL585 Rilo ?

Shalom,

1) Set up ilo with password and ip address.
2) configure that with system-config-cluster going through normal fencing steps.

ilo devices control power to the system and therefore can be used to boot the system via a power reset. To avoid split brain syndrome, e.g. both modes trying to modify the same data at the same time fencing permits the cluster service to fence one node to avoid data corruption.

Without fencing your cluster is not reliable and can not deal with problems and maintain data integrity.

So no, you can not live without fencing.

SEP
Steven E Protter
Owner of ISN Corporation
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Ivan Ferreira
Honored Contributor

Re: How to fence a RHEL5 cluster with HP DL585 Rilo ?

>>> even not very clear if the HP Rilo fencing works


Disconnect the interconnect cable to test.
Por que hacerlo dificil si es posible hacerlo facil? - Why do it the hard way, when you can do it the easy way?
Devesh Pant_1
Esteemed Contributor

Re: How to fence a RHEL5 cluster with HP DL585 Rilo ?

Thanks SEp

Ivan,
I got the fencing working fine with the iLO

the best way to test is
/sbin/fence_ilo -a ilo_hostname -l ilo_username -p ilo_password -o off -v

I had to download and install perl-Crypt-SSLeay-0.56-1.el5.rf.x86_64.rpm
to get this to work.

thanks
DP
freeman7107
New Member

Re: How to fence a RHEL5 cluster with HP DL585 Rilo ?

Hi:
I have the same problem,while stopping fencing,it takes a long time and then has an error "leaving cluster failed,device or resource busy".
Mine is HP DL580G5 with ilo2,i have a usrname password and ip address with ilo2.
Can anyone tell me how to config the fence and how to deal with the problem?
thanks a lot!
Freeman
My email:freeman_7107@163.com
If you have any files about it,send me please,thank you!