[Pacemaker] dampen / pingd - how to be sure pingd will be updated

Thomas Guthmann tguthmann at iseek.com.au
Tue Jan 18 00:46:26 UTC 2011


Hey,

>> This may be dumb or obvious but it took me a long time to understand why my pingd with
>> dampen never got updated! So I think that this may be useful for everybody to share.
>> In short:
>>
>>   " You MUST define a monitor interval HIGHER than the the dampen delay. "
> Which version was this?
> I seem to recall fixing something similar to this (its a bug in attrd)
> but 1.0.10 should be ok.

It was 1.0.8 and 1.0.9. 

BTW, what would the best way to do : 
  " if 3 pings fail with an interval of 30 seconds between each 
    then 
       set pingd to 0.
    else
       keep pingd to 1
  " 

My main goal is to migrate _nothing_ if an external IP (usually 
gateway) has a temporary hiccup. I am doing this right now but I
am open for comments.

primitive pingd ocf:pacemaker:ping \
        params host_list="EXT.ERN.AL.IP" attempts="3" timeout="2" debug="true" options="-i30" \
        op monitor interval="120" timeout="130" \
        op start interval="0" timeout="90" \
        op stop interval="0" timeout="90"

Note that sometimes I have strange pacemaker timeout errors. 
What does exactly represent "timeout" in op monitor ?

Thomas











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