Welcome to the most active Linux Forum on the web.
Go Back > Forums > Enterprise Linux Forums > Linux - Enterprise
User Name
Linux - Enterprise This forum is for all items relating to using Linux in the Enterprise.


  Search this Thread
Old 05-01-2007, 02:18 AM   #1
LQ Newbie
Registered: Mar 2007
Posts: 14

Rep: Reputation: 0
Unhappy How to configure fencing in RHEL cluster ?


I am currently configuring RHEL cluster and as this is my first time to configure RHEL cluster so i am facing few problems: I need you guys input an help.

1. My first question is about fencing, I have configured HP ILO for both of the cluster nodes. But while configuraing these fence devices for nodes in cluster configuration tool , i am confused. Should i place both fence devices(comil01 & comilo2) in same fence level and assign this fence level to both cluster nodes.OR i should create two fence levels ( each with one fence device ) and then assign these levels to each node.

2. How i can create a ethernet based heartbeat channel between the cluster nodes. I have two nodes comm1 with ip address of and comm2 with ip address of i place a cross cable between the other interface available on the nodes and put ip like & on them . Then how can tell my cluster to use this ethernet link as heartbeat between the nodes?

Please advice as i am a newbie for this sort of cluster configuration on RHEL

Best Regards

Old 06-11-2007, 02:59 AM   #2
Registered: Jun 2007
Location: Munich, Germany
Distribution: RHEL, CentOS, Fedora, SLES (...)
Posts: 399

Rep: Reputation: 39
First of all I do not recommend the GUI system-config-cluster for complex cluster configurations. Editing /etc/cluster/cluster.conf is easier and safer.

With the fence level settings you simply adjust the priority of the fencing agents. You can place your fencing agent on level 1 on both nodes. It is wise to add an additional fence level at least for fence manual.

Productive environments should use more than one fencing agent to avoid a single point of failure.

Your desired heartbeat network can be configured with changes to the /etc/hosts file. You should add the 192.168.10.x IPs and choose a descriptive name for them. That name then should be used in the cluster.conf for the hostname of the cluster nodes.

The heartbeating will resolve the correct IP address with /etc/hosts and select the right interface for communication.

Both NICs can be connected with a crossover cable.

Last edited by brianmcgee; 06-11-2007 at 03:02 AM.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
RHEL cluster suite hardeep_ubhi Linux - Hardware 1 09-07-2006 04:59 AM
RHEL with Cluster services: can I use LVM? mjgsantos Linux - Enterprise 7 08-15-2006 08:02 AM
iLO fencing with Cluster Suite depdiver Red Hat 1 02-09-2006 08:50 AM
Oracle on RHEL AS3 Cluster dippelw Linux - Enterprise 2 06-05-2005 08:38 AM
configure cluster in redhat advanced server 2.1 sathishraks Red Hat 1 02-13-2004 12:19 PM > Forums > Enterprise Linux Forums > Linux - Enterprise

All times are GMT -5. The time now is 02:42 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration