Thanks Jan for the reply .
On Adding the "reboot" option , fencing is working fine for me .
<fence>
<method name="1">
<device action="" name="SSDGDB2"/>
</method>
</fence>
Thanks
Zaman
On Saturday, 23 November 2013 12:30 AM, Jan Pokorný <jpokorny@xxxxxxxxxx> wrote:
Just a quick correction...
On 22/11/13 19:29 +0100, Jan Pokorný wrote:
> On 22/11/13 14:24 +0800, Zama Ques wrote:
>> I configured fence_ipmilan as fencing device for my cluster . From
>> the command line , it works fine but when I try to fence a node from
>> luci interface it is failing .
>>
>> fencing config info from cluster.conf
>>
>> ====
>>
>> <cman expected_votes="1" two_node="1"/>
>> <fencedevices>
>> <fencedevice agent="fence_ipmilan" power_wait="10" auth="password" ipaddr="192.168.2.181" lanplus="1" login="aman" name="DB1" passwd="xxxx"/>
>> <fencedevice agent="fence_ipmilan" power_wait="10" auth="password" ipaddr="192.168.2.183" lanplus="1" login="aman" name="DB2" passwd="xxxx"/>
>> </fencedevices>
>> ====
>>
>>> From system log file (/var/log/messages..)
>>
>>
>> ====
>> Apr 15 23:32:18 db2 fence_node[17909]: agent "fence_ipmilan" reports: Rebooting machine @ IPMI:192.168.2.181...Failed
>> Apr 15 23:32:18 db2 fence_node[17909]: Fence of "db1.example.com" was unsuccessful
>> ====
>>
>> From the command line , it works fine with the parameters provided above
>>
>> # fence_ipmilan -t 10 -A password -l aman -p xxxx -P -a 192.168.2.183
>> Rebooting machine @ IPMI:192.168.2.183...
>>
>>
>> Version and hardware related info
>>
>> ====
>> # rpm -q cman
>> cman-2.0.115-34.el5
>>
>> ~]# cat /etc/redhat-release
>> CentOS release 5.5 (Final)
>>
>> # dmidecode -t system
>>
>> System Information
>> Manufacturer: HP
>> Product Name: ProLiant DL580 G7
>> ====
>
>
> so far, I can see two problematic places:
>
> 1. "power_wait" parameter for fence_ipmilan seems not be supported yet
> in el5.5 based distro; to achieve the same as with "-t 10", please
> use "timeout" parameter instead
>
> - not sure if this will explain what you observe or not
>
> 2. as of el5.5, conga is still using direct /sbin/fence_node
> invocation (direct library call is used since some later version),
> so you can mimic (and possibly debug, e.g., with strace) what luci
> triggers with "fence this node" by running on the
> respective node:
actually, run the command on the other node, not only this how luci
does it, it also to prevent unexpected "blackout" when expecting
the command to return...
> /sbin/fence_node -O NODENAME
>
> where NODENAME is the respective clusternode's "name" parameter in
> cluster.conf
>
>
> Hope this helps.
--
Jan
--
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Linux-cluster@xxxxxxxxxx
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On 22/11/13 19:29 +0100, Jan Pokorný wrote:
> On 22/11/13 14:24 +0800, Zama Ques wrote:
>> I configured fence_ipmilan as fencing device for my cluster . From
>> the command line , it works fine but when I try to fence a node from
>> luci interface it is failing .
>>
>> fencing config info from cluster.conf
>>
>> ====
>>
>> <cman expected_votes="1" two_node="1"/>
>> <fencedevices>
>> <fencedevice agent="fence_ipmilan" power_wait="10" auth="password" ipaddr="192.168.2.181" lanplus="1" login="aman" name="DB1" passwd="xxxx"/>
>> <fencedevice agent="fence_ipmilan" power_wait="10" auth="password" ipaddr="192.168.2.183" lanplus="1" login="aman" name="DB2" passwd="xxxx"/>
>> </fencedevices>
>> ====
>>
>>> From system log file (/var/log/messages..)
>>
>>
>> ====
>> Apr 15 23:32:18 db2 fence_node[17909]: agent "fence_ipmilan" reports: Rebooting machine @ IPMI:192.168.2.181...Failed
>> Apr 15 23:32:18 db2 fence_node[17909]: Fence of "db1.example.com" was unsuccessful
>> ====
>>
>> From the command line , it works fine with the parameters provided above
>>
>> # fence_ipmilan -t 10 -A password -l aman -p xxxx -P -a 192.168.2.183
>> Rebooting machine @ IPMI:192.168.2.183...
>>
>>
>> Version and hardware related info
>>
>> ====
>> # rpm -q cman
>> cman-2.0.115-34.el5
>>
>> ~]# cat /etc/redhat-release
>> CentOS release 5.5 (Final)
>>
>> # dmidecode -t system
>>
>> System Information
>> Manufacturer: HP
>> Product Name: ProLiant DL580 G7
>> ====
>
>
> so far, I can see two problematic places:
>
> 1. "power_wait" parameter for fence_ipmilan seems not be supported yet
> in el5.5 based distro; to achieve the same as with "-t 10", please
> use "timeout" parameter instead
>
> - not sure if this will explain what you observe or not
>
> 2. as of el5.5, conga is still using direct /sbin/fence_node
> invocation (direct library call is used since some later version),
> so you can mimic (and possibly debug, e.g., with strace) what luci
> triggers with "fence this node" by running on the
> respective node:
actually, run the command on the other node, not only this how luci
does it, it also to prevent unexpected "blackout" when expecting
the command to return...
> /sbin/fence_node -O NODENAME
>
> where NODENAME is the respective clusternode's "name" parameter in
> cluster.conf
>
>
> Hope this helps.
--
Jan
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