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SLES 12 High Availability Cluster - scsi persistant reservation fencing

I'm trialling SLES 12 w/ HAE to run a Fileserver cluster consisting of two nodes. Idea was to use SCSI persistant reservation as a fencing method using the fence_scsi script from stonith fence agents. ...
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What fence device setup would prevent a mutual-STONITH in a two-node RHEL cluster?

I've got a Red Hat cluster (corosync+rgmanager) software on RHEL 6.6 on physical Dell servers with iDRAC. This cluster is for stateless application (stunnel, a TLS gateway), so it doesn't need and ...
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1answer
121 views

Why to use fencing when you already have redundant communication links?

This article stays that you should use both fencing (aka STONITH) and redundant communication links. I'm trying to understand what benefits STONITH gives in case of split-brain. Consider for example ...
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1answer
459 views

Simple fencing/STONITH script in Centos 7

I am installing a simple Corosync/pacemaker/drbd high availability cluster using Centos 7 and would like to provide fencing/STONITH using custom hardware (power switches using USB connections). As ...
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902 views

Fence device for RHEL cluster node on vmware workstation

I have a host with Windows 7. I installed VMware Workstation where I have installed two virtual machines. Each virtual machine is a rhel 6.2 node running clustersuite. Do you know which fence device ...
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551 views

How Ganeti deals with Fencing

I found out that proxmox doc says a lot abou Fencing. I haven't found anything about it in Ganeti doc. Also I screeched Ganeti Google Group Archive and I found similar question but answer was that ...
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2answers
576 views

Red Hat Clustering Fencing fails

I'm trying to demo (and learn) a Red Hat Cluster on ESXi 3.5 update2.I've set a shared fencing device with the info for my ESXi server. I try fencing a node from Luci, but it only tells me that ...