On Feb 6, 2009, at 11:29 AM, Priyanka Ranjan wrote:
On Fri, Feb 6, 2009 at 3:24 PM, Andrew Beekhof <beek...@gmail.com>
wrote:
On Feb 6, 2009, at 10:49 AM, Romi Verma wrote:
On Fri, Feb 6, 2009 at 3:09 PM, Andrew Beekhof <beek...@gmail.com>
wrote:
On Feb 6, 2009, at 10:29 AM, Romi Verma wrote:
> i want the partition without quorum to reset the nodes instead of
killing .
> is it possible.
define the difference between reset node and kill node?
According to me , killing a node means powering it off but
reseting a node means rebooting it.
This is controlled with the stonith-action option
but dont you think in two nodes cluster if we get spilit brain
situation both node will try to stonith each other.
which is why two node clusters are good for demonstrations and
thats about it.
there are some limited uses for them, but in general you need 3
nodes for a sane cluster
so do you mean two nodes cluster are not good for production
environment because both will try to stonith each other in spilit
brain??
amongst other things.
even though one side wins the initial "race-to-stonith", if the
looser comes up again and the cause of the split-brain still
exists... then they'll just shoot the "winner" so it can start
resources... then that node comes up and shoots the other host so it
can start resources... etc etc
ooh it's so horrible. Cant we do something to overcome this
situation or , we will simply suggest not to use 2 nodes cluster at
all.
you can set the stonith-action option to poweroff, but its still not
ideal
one more question , why we need to configure stonith in two node
cluster. we can always set no-quorum policy to "suicide"
which works by using stonith
wow it's interesting. i had no idea that stonith is behind this . i
saw some stonith devices by doing stonith -L . so which stonith
device should i configure for this.
is it stonith -suicide device??
consider I have configured stonith in my cluster .
if no-quorum-policy is set to "ignore" then i guess no stonith will
be executed and
if no-quorum-policy is set to "suicide", "stop" or "freeze" then
stonith will be executed. Right??
no. only for suicide
Hey i must say this is wonderful list. you ppl are really very
helpful . Thanks.
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