The Red Hat cluster suite includes software to create a high availability cluster. It enables applications to be highly available by reducing downtime and ensuring that there's no single point of failure in a cluster. It also isolates unresponsive applications and nodes so they can't corrupt ...

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Running a service in ALL RHCS cluster nodes

I'm tryng to configure a service to be run in all nodes of a RHCS. I've tried placing the service without failover domain, but it appears to run only in one node <rm> ...
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103 views

How to tune gfs2 to get better performance

We are testing gfs2 file system with storage partition on 2 node cluster. I added line into cluster.conf to avoid default 100 locks/sec value for getting more performance. But i still get less ...
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1answer
42 views

shared file system with rhcs

We have 2 node cluster which is attached with storage to share single parition between both cluster node. So for that we configure rhcs with gfs2. We aaded resources with gfs and ip address. So when ...
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1answer
98 views

Red-Hat Cluster failover notification?

Is there anyway to get a notification / setup a notification mechanizem when the cluster fails over?
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1answer
87 views

Red-Hat Cluster doesnt migrate services on node shutdown

I have a RHCS with two nodes and manual fencing. when I restart Node 1 (the primary) it migrates both services to Node 2 automatically. but when I shutdown Node 1, it doesnt happen and I need to use ...
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1answer
1k views

RHCS: GFS2 in A/A cluster with common storage. Configuring GFS with rgmanager

I'm configuring a two node A/A cluster with a common storage attached via iSCSI, which uses GFS2 on top of clustered LVM. So far I have prepared a simple configuration, but am not sure which is the ...
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3answers
2k views

Red Hat cluster: Failure of one of two services sharing the same virtual IP tears down IP

I'm creating a 2+1 failover cluster under Red Hat 5.5 with 4 services of which 2 have to run on the same node, sharing the same virtual IP address. One of the services on each node (called disk1 and ...
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3answers
1k views

HP ILO and Vmware ESXi, how to assign HP ILO to specific virtual guest machine?

I m using RHCS, and one of the important part is to have fencing working for my environment. Normally using a physical server, i can simply used the ILO as my fence device. However as guest machine ...
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1answer
161 views

Considerations for certificate revocation for intermittently isolated ad-hoc networks

I'm trying to decide on a certificate revocation strategy for a solution I'm designing (that will utilize Dogtag PKI, per customer request). The obvious choices seem to be using a CRL or using OCSP. ...
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2answers
747 views

RHCS 5 NFS cluster node not releasing TCP 2049 on relocate

Imagine if you will you have a 2 node Red Hat NFS Cluster; each node is RHEL5.4 64bit and they share a SAN LUN for the data. The primary interface on each server is HA failover bonded (bond0, ...
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2answers
310 views

Xen guests accessing LUNs

We are using RHEL5.3 with a Clarion SAN attached by FC. Our situation is that we have a number of LUNs presented to Hosts and we want to dynamically present the LUNs to Xen Guests. We are not sure ...
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5answers
4k views

Disable fencing in RedHat Cluster?

Whilst I'm developing with RedHat Cluster, I'd like to be able to disable fencing completely. The documentation for this stuff is fairly lacking - can I do this at all, or should I be looking to fake ...