Bug 241217

Summary:	fence_apc 1.32.45 doesn't work
Product:	[Retired] Red Hat Cluster Suite	Reporter:	Jonny <jschulz>
Component:	fence	Assignee:	Marek Grac <mgrac>
Status:	CLOSED NEXTRELEASE	QA Contact:	Cluster QE <mspqa-list>
Severity:	high	Docs Contact:
Priority:	medium
Version:	4	CC:	cluster-maint, mgrac, newbery
Target Milestone:	---	Keywords:	Reopened
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-03-04 09:43:52 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Jonny 2007-05-24 13:34:58 UTC

Description of problem:

The cluster manager try to fence a cluster node and it fails with the following
error (from /var/log/messages):

----------------------------------------------------------------------------
May 24 14:26:26 hostname fenced[5139]: fencing node "cl-node-74"
May 24 14:26:41 hostname fenced[5139]: agent "fence_apc" reports: Traceback 
(most recent call last):   File "/sbin/fence_apc", line 798, in ?     mai
n()   File "/sbin/fence_apc", line 345, in main     do_power_off(sock)   File "/
sbin/fence_apc", line 782, in do_power_off     x = do_power_switch(sock, "o
ff")   File "/sbi
May 24 14:26:41 hostname fenced[5139]: agent "fence_apc" reports: n/fence_apc", 
line 590, in do_power_switch     result_code, response = power_off(tx
t + ndbuf)   File "/sbin/fence_apc", line 786, in power_off     x = 
power_switch(buffer, False, "2", "3");   File "/sbin/fence_apc", line 779, in 
power_swi
tch     raise "un
May 24 14:26:41 hostname fenced[5139]: agent "fence_apc" reports: known screen 
encountered in \n" + str(lines) + "\n" unknown screen encountered in  
['3', '', '', '------- Power Supply Status -------------------------------------
--------------', '', '          Primary Power Supply Status: OK', '        
Secondary Power S
May 24 14:26:41 hostname fenced[5139]: agent "fence_apc" reports: upply Status: 
OK', '', '', '     <ESC>- Back, <ENTER>- Refresh', '> ']  
----------------------------------------------------------------------------


Then I copied an older version (1.32.25) from another cluster into /sbin at it 
works really nice but that cannot be the solution.


Version-Release number of selected component (if applicable):

fence-1.32.45-1

How reproducible:

Just test it with "ifdown bond0" and take a look to /var/log/messages. Th 
cluster manager will try to fence the node because he missed him to many 
heartbeats ... and so on ...

Additional info:

uname -a
Linux hostname 2.6.9-55.ELsmp #1 SMP Fri Apr 20 16:36:54 EDT 2007 x86_64 x86_64 
x86_64 GNU/Linux

Comment 1 Robert Clark 2007-06-05 13:42:49 UTC

I see the same error with fence-1.32.45-1.0.1 on an i686 system. This is
definitely a regression from 1.32.25-1 which I was using before the upgrade to 4U5.

APC details:
Model: AP7920
Manufacture Date: 07/02/2006
Hardware Revision: B2
Network Management Card AOS: 2.7.0
Rack PDU APP: 2.7.3

Comment 2 Robert Clark 2007-06-05 14:56:07 UTC

Here's the relevant piece of code:

elif i.find(DEVICE_MANAGER) != (-1):
  if switchnum != "":
    res = switchnum + "\r"
  else:
    res = "3\r"
  return (NOT_COMPLETE, res)

which operaties on the following menu:

------- Device Manager --------------------------------------------------------

     1- Phase Monitor
     2- Outlet Control
     3- Power Supply Status

Looks like the code is assuming "Outlet Control" will be option 3, which it
isn't in this case. The old version uses a regular expression to identifiy the
correct option which succeeds.

Comment 3 Jim Parsons 2008-02-27 14:26:05 UTC

This is a duplicate of 246216

*** This bug has been marked as a duplicate of 246216 ***

Comment 5 Marek Grac 2009-03-04 09:43:52 UTC

There will be new fence agent for APC in RHCS 4.8 (same as in 5.3) which includes ssh support, non-root accounts support and also fix for this problem.