[Linux-cluster] Node is randomly fenced

[Digimer]

The first thing I would do is get a second NIC and configure 
active-passive bonding. network issues are too common to ignore in HA 
setups. Ideally, I would span the links across separate stacked switches.

As for debugging the issue, I can only recommend to look closely at the 
system and switch logs for clues.

On 11/06/14 02:55 PM, Schaefer, Micah wrote:
> I have the issue on two of my nodes. Each node has 1ea 10gb connection. No
> bonding, single link. What else can I look at? I manage the network too. I
> don¹t see any link down notifications, don¹t see any errors on the ports.
>
>
>
>
> On 6/11/14, 2:29 PM, "Digimer" <lists at alteeve.ca> wrote:
>
>> On 11/06/14 02:21 PM, Schaefer, Micah wrote:
>>> It failed again, even after deleting all the other failover domains.
>>>
>>> Cluster conf
>>> http://pastebin.com/jUXkwKS4
>>>
>>> I turned corosync output to debug. How can I go about troubleshooting if
>>> it really is a network issue or something else?
>>>
>>>
>>>
>>> Jun 09 13:06:59 corosync [QUORUM] Members[4]: 1 2 3 4
>>> Jun 11 14:10:17 corosync [TOTEM ] A processor failed, forming new
>>> configuration.
>>> Jun 11 14:10:29 corosync [QUORUM] Members[3]: 1 2 3
>>> Jun 11 14:10:29 corosync [TOTEM ] A processor joined or left the
>>> membership and a new membership was formed.
>>> Jun 11 14:10:29 corosync [CPG   ] chosen downlist: sender r(0)
>>> ip(10.70.100.101) ; members(old:4 left:1)
>>
>> This is, to me, *strongly* indicative of a network issue. It's not
>> likely switch-wide as only one member was lost, but I would certainly
>> put my money on a network problem somewhere, some how.
>>
>> Do you use bonding?
>>
>> --
>> Digimer
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>>
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>
>


-- 
Digimer
Papers and Projects: https://alteeve.ca/w/
What if the cure for cancer is trapped in the mind of a person without 
access to education?