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Re: [Linux-cluster] fence_ipmilan not working



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 redhat com> 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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