4.58. fence-agents

An updated fence-agents package that fixes various bugs and adds several enhancements is now available for Red Hat Enterprise Linux 6.
Red Hat fence agents are a collection of scripts to handle remote power management for cluster devices. They allow failed or unreachable cluster nodes to be forcibly restarted and removed from the cluster.
The fence-agents package has been upgraded to upstream version 3.1.5, which provides a number of bug fixes and enhancements over the previous version. (BZ#707123)

Bug Fixes

BZ#731166
Due to a change in REST API, the fence_rhevm utility incorrectly reported status "UP" as "RUNNING". Consequently, the "fence_rhevm -o status" command always reported "OFF". This bug has been fixed, and fence_rhevm now reports status correctly.
BZ#718924
The fence_drac5 agent failed to clear its SSH sessions on exit as expected by firmware. Consequently, the fence agent appeared to be still connected to the device, and once the connection limit was reached, further logins to the device were not allowed. This bug has been fixed, and fence_drac5 now clears its SSH sessions properly.
BZ#693428
The "monitor" and "status" commands of the fence_ipmilan agent returned chassis status instead of the fence device status. As a result, when a server chassis was powered off, the fence_ipmilan agent exited with the incorrect result code "2" when passed one of these commands. Now, fence_ipmilan returns the correct result code "0" in the described scenario.
BZ#708052
When a blade server was removed from a blade chassis and was fenced via the fence_bladecenter utility with the "--missing-as-off" option enabled, and was scheduled with the "reboot" action, the fence failed. This bug has been fixed, and fence_bladecenter no longer returns an error if a blade server is missing.
BZ#718196
A list operation on fence_drac5 agents resulted in unexpected termination of fence agents. A patch has been provided to address this issue, and fence_drac5 agents now work correctly in the described scenario.
BZ#718207
When the pyOpenSSL package was not present in the system, when an error occurred, the fence_ilo agent terminated with a generic error message, making it difficult to debug the problem. Now, fence_ilo reports that a dependent package is missing in the described scenario, thus fixing this bug.
BZ#732372
The verbose mode of the fence_ipmilan agent exposed user passwords when the whole command was logged by an IPMI tool. Now, the fence_ipmilan output has been changed, and passwords remain undisclosed in the described scenario.
BZ#738384
During simultaneous unfencing operations performed via the fence_scsi agent, all nodes launched their reservation commands at the same time. Consequently, some of the commands failed. Now, fence_scsi retries to unfence a node until its reservation command succeeds.
BZ#734429
A null dereference was discovered in the fence_kdump agent, when the strchr() function returned the NULL value. With this update, the dereference has been fixed in the code and no longer occurs.

Enhancements

BZ#624673
With this update, the new fence_vmware_soap() function has been provided to enable fencing of VMware guests in ESX environments.
BZ#461948
The fence_kdump utility has been updated to integrate fencing with the kernel dump environment.
BZ#698365
With this update, the RelaxNG schema generation for fence-agents has been updated with the rha:description and rha:name attributes in its output to fence attribute group elements.
BZ#726571
The fence_ipmilan agent has been updated to support the -L option of the ipmilan daemon, thus supporting fencing with user session privileges level.
Users of fence-agents are advised to upgrade to this updated package, which fixes these bugs and adds these enhancements.
An updated fence-agents package that fixes one bug is now available for Red Hat Enterprise Linux 6.
Red Hat fence agents are a collection of scripts to handle remote power management for several devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster.

Bug Fix

BZ#785816
The fence_rhevm fencing agent uses the Red Hat Enterprise Virtualization API to check the power status ("on" or "off") of a virtual machine. In addition to the states of "up" and "down", the API includes other states like "unassigned", "powering_up", "paused", "migrating", "unknown", "not_responding", "wait_for_launch", "reboot_in_progress", "saving_state", "restoring_state", "suspended", "image_illegal", "image_locked" or "powering_down". Previously, only if the machine was in the "up" state, the "on" power status was returned. The "off" status was returned for all other states although the machine was actually running. This allowed for successful fencing even before the machine was really powered off. With this update, the fence_rhevm agent detects power status of a cluster node more conservatively, and the "off" status is returned only if the machine is really powered off, it means in the "off" state.
All users of fence-agents are advised to upgrade to this updated package, which fixes this bug.
Updated fence-agents packages that fix one bug are now available for Red Hat Enterprise Linux 6.
Red Hat fence agents are a collection of scripts to handle remote power management for cluster devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster.

Bug Fix

BZ#811873
Previously, the fence_vmware_soap fence agent did not expose the full path to a virtual machine that is required for fencing. With this update, fence_vmware_soap has been modified to support identification of virtual machines as expected.
All users of fence-agents are advised to upgrade to these updated packages, which fix this bug.
Updated fence-agents packages that fix one bug are now available for Red Hat Enterprise Linux 6.
Red Hat fence agents are a collection of scripts for handling remote power management for cluster devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster.

Bug Fix

BZ#814843
Previously, fencing a Red Hat Enterprise Linux cluster node with the fence_soap_vmware fence agent running in a virtual machine on VMWare could fail with the following error message:
KeyError: 'config.uuid'
This was because the fence agent was not able to work with more than one hundred machines in a cluster. With this update, the underlying source code has been modified to support fencing of such clusters.
All users of fence-agents are advised to upgrade to these updated packages, which fix this bug.
Updated fence-agents packages that fix two bugs are now available for Red Hat Enterprise Linux 6.
Red Hat fence agents are a collection of scripts for handling remote power management for cluster devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster.

Bug Fix

BZ#1012574
Prior to this update, the fence agent for IPMI (Intelligent Platform Management Interface) could return an invalid return code when the "-M cycle" option was used. This invalid return code could cause invalid interpretation of success of a fence action, eventually causing the cluster to become unresponsive. This bug has been fixed and only predefined return codes are now returned in the described scenario.
Users of fence-agents are advised to upgrade to these updated packages, which fix this bug.