[Linux-cluster] fence_apc unknown screen encountered

[Matt Harrington]

I am encountering an unknown screen exception from fence_apc when trying 
to fence a system in a 3-node cluster (centos5.2 cman-2.0.84-2.el5).  
What is interesting, is that I can fence the other two nodes in my 
cluster.  I believe the difference is that the problem node has two 
power supplies which means that fence_apc is called with off/on instead 
of restart.  This also requires connecting to two different pdus.  It 
could also be that there is something wrong with the config which was 
taken from an older system and updated with luci.  I am unable to 
descern any differences between the menus of the two pdus.



[root at fs102 ~]# /sbin/fence_node fs103
agent "fence_apc" reports: Traceback (most recent call last):
  File "/sbin/fence_apc", line 829, in ?
    main()
  File "/sbin/fence_apc", line 303, in main
    do_power_off(sock)
  File "/sbin/fence_apc", line 813, in do_power_off
    x = do_power_switch(sock, "off")
  File "/sbi
agent "fence_apc" reports: n/fence_apc", line 611, in do_power_switch
    result_code, response = power_off(txt + ndbuf)
  File "/sbin/fence_apc", line 817, in power_off
    x = power_switch(buffer, False, "2", "3");
  File "/sbin/fence_apc", line 810, in power_switch
    raise "un
agent "fence_apc" reports: known screen encountered in \n" + str(lines) 
+ "\n"
unknown screen encountered in
['', '> 2', '', '', '------- Configure Outlet 
------------------------------------------------------', '', '    #  
State  Ph  Name                     Pwr On Dly  Pwr Off D
agent "fence_apc" reports: ly  Reboot Dur.', '   
----------------------------------------------------------------------------', 
'    2  ON     1   fs103                    0 sec       0 sec        5 
sec', '', '     1- Outlet Name         : fs103', '     2- Power On 
Delay(sec) : 0',
agent "fence_apc" reports:  '     3- Power Off Delay(sec): 0', '     4- 
Reboot Duration(sec): 5', '     5- Accept Changes      : ', '', '     ?- 
Help, <ESC>- Back, <ENTER>- Refresh, <CTRL-L>- Event Log']


[root at fs102 ~]# /sbin/fence_apc -a 10.10.1.200 -l pdu -p pdu -n 13 -o status
Status check successful. Port 13 is OFF
[root at fs102 ~]# /sbin/fence_apc -a 10.10.1.201 -l pdu -p pdu -n 2 -o status
Status check successful. Port 2 is ON
[root at fs102 ~]# /sbin/fence_apc -a 10.10.1.201 -l pdu -p pdu -n 2 -o off
Traceback (most recent call last):
  File "/sbin/fence_apc", line 829, in ?
    main()
  File "/sbin/fence_apc", line 303, in main
    do_power_off(sock)
  File "/sbin/fence_apc", line 813, in do_power_off
    x = do_power_switch(sock, "off")
  File "/sbin/fence_apc", line 611, in do_power_switch
    result_code, response = power_off(txt + ndbuf)
  File "/sbin/fence_apc", line 817, in power_off
    x = power_switch(buffer, False, "2", "3");
  File "/sbin/fence_apc", line 810, in power_switch
    raise "unknown screen encountered in \n" + str(lines) + "\n"
unknown screen encountered in
['2', '', '', '------- Configure Outlet 
------------------------------------------------------', '', '    #  
State  Ph  Name                     Pwr On Dly  Pwr Off Dly  Reboot 
Dur.', '   
----------------------------------------------------------------------------', 
'    2  ON     1   fs103                    0 sec       0 sec        5 
sec', '', '     1- Outlet Name         : fs103', '     2- Power On 
Delay(sec) : 0', '     3- Power Off Delay(sec): 0', '     4- Reboot 
Duration(sec): 5', '     5- Accept Changes      : ', '', '     ?- Help, 
<ESC>- Back, <ENTER>- Refresh, <CTRL-L>- Event Log']




<cluster config_version="143" name="gfs_cluster">
    <fence_daemon clean_start="0" post_fail_delay="0" post_join_delay="3"/>
    <clusternodes>
        <clusternode name="fs101" nodeid="1" votes="1">
            <fence>
                <method name="1">
                    <device name="pdu102.eons.dev" port="12"/>
                </method>
            </fence>
        </clusternode>
        <clusternode name="fs102" nodeid="2" votes="1">
            <fence>
                <method name="1">
                    <device name="pdu101.eons.dev" port="8"/>
                </method>
            </fence>
        </clusternode>
        <clusternode name="fs103" nodeid="3" votes="1">
            <fence>
                <method name="1">
                    <device name="pdu101.eons.dev" option="off" port="13"/>
                    <device name="pdu102.eons.dev" option="off" port="2"/>
                    <device name="pdu101.eons.dev" option="on" port="13"/>
                    <device name="pdu102.eons.dev" option="on" port="2"/>
                </method>
            </fence>
        </clusternode>
    </clusternodes>
        <fencedevices>
                <fencedevice agent="fence_apc" ipaddr="10.10.1.200" 
login="pdu" name="pdu101.eons.dev" passwd="pdu"/>
                <fencedevice agent="fence_apc" ipaddr="10.10.1.201" 
login="pdu" name="pdu102.eons.dev" passwd="pdu"/>
        </fencedevices>
...
</cluster>




[root at fs102 ~]# cat /etc/redhat-release
CentOS release 5.2 (Final)
[root at fs102 ~]# rpm -qf /sbin/fence_apc
cman-2.0.84-2.el5
[root at fs102 ~]# rpm -q luci
luci-0.12.0-7.el5.centos.3


pdu101:
American Power Conversion               Network Management Card AOS      
v3.5.9
(c) Copyright 2008 All Rights Reserved  Rack PDU APP                     
v3.5.8

pdu102:
American Power Conversion               Network Management Card AOS      
v3.5.9
(c) Copyright 2008 All Rights Reserved  Rack PDU APP                     
v3.5.8