Adding upstream version 4.12.1.upstream/4.12.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/agents/apc_snmp/README b/agents/apc_snmp/README
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+This is an snmp based fence agent for APC power switches to be used
+with RHEL4 Red Hat Cluster Suite.
+
+The reasons to use this agent rather than the current fence_apc agent are:
+1) This script has been tested with EVERY powerswitch that APC currently
+makes.
+2) It will work on many older models that are no longer supported by APC.
+I have been told that it even works with the AP9200 switch. Older switches
+usually don't do well with the fence_apc script.
+3) This agent works with large power switches that have more than 8 outlets.
+The fence_apc script will also, in the next update -- this script will work for you now.
+
+If feedback on this beta version of the agent is good, and if ganged switches 
+can be supported, then this agent may replace fence_apc.
+
+In order to use this agent, you will need to have net-snmp-utils installed 
+on every node in your cluster. net-snmp-utils is scheduled for inclusion 
+in the base RHEL distribution for Update 4, and is yummable in FC5.
+
+After net-snmp-utils is installed, there will be a directory named:
+/usr/share/snmp/mibs/
+
+Place the accompanying powernet369.mib file in this directory.
+
+To use the agent, cp the agent to the /sbin directory on every
+cluster node. The interface for the fence_apc_snmp agent is identical to
+the existing fence_apc agent, so if you are using APC for fencing in 
+your cluster, you *could* backup your current fence_apc agent, and 
+rename this agent from fence_apc_snmp to fence_apc, and it should just work.
+
+NOTE: The fence_apc_snmp agent does not yet support ganged or 'daisy-chained'
+APC switches. 
+
+If you would rather not copy over your fence_apc agent, you can still use 
+the fence_apc_snmp agent by dropping it into /sbin on every node, and then
+defining a <fencedevice> in the cluster.conf file with agent="fence_apc_snmp"
+as an attribute, and use it that way. Note, please, that the GUI does
+not support this agent yet, and you will have to edit your cluster.conf 
+by hand and then propagate it yourself. If you need help with this, email
+me on linux-cluster or at the address below.
+
+Big thanks to Nate Straz who laid the foundation for this agent.
+
+Please let me know how this agent works.
+--Jim Parsons - jparsons@redhat.com