I have dreaded that answer. Maybe I can fix vote quorum on corosync 1.4. Or
maybe I can get 2.X working on EL6. Really don't wanna deal with another
layer.
Thanks.
On Thu, Apr 13, 2017 at 2:10 PM, Digimer <li...@alteeve.ca> wrote:
> On 13/04/17 05:07 PM, neeraj ch wrote:
> > Hi,
> >
> > I have three node cluster set up. My corosync config is as follows.
> >
> > compatibility: whitetank
> > totem {
> > version: 2
> > secauth: on
> > threads: 0
> > interface {
> > member{
> > memberaddr: ip
> > }
> > member{
> > memberaddr:ip
> > }
> > member{
> > memberaddr:ip
> > }
> > bindnetaddr:172.31.31.12
> > ringnumber: 0
> > mcastport: 5405
> > ttl: 1
> > }
> > transport: udpu
> > }
> > logging {
> > fileline: off
> > to_stderr:yes
> > to_logfile: yes
> > to_syslog:yes
> > logfile:/var/log/cluster/corosync.log
> > debug:off
> > timestamp: on
> > logger_subsys {
> > subsys: AMF
> > debug:off
> > }
> > }
> > service {
> > name: pacemaker
> > ver: 1
> > }
> > amf {
> > mode: disabled
> > }
> >
> >
> >
> > I went on to partition the master, the rest of the cluster considered
> > the master down and elected a new master.
> >
> > But the corosync on the partitoned node didnt realize loss of quoram and
> > consequently pacemaker didnt shut down the resources. Giving me a
> > multi-master scenario.
> >
> > I have tried adding , quorum tool as votequoram and it seems to give the
> > same result.
> >
> > Why isn't corosync not detecting this scenario ? any ideas.
> >
> > I used IP tables to block all UDP traffic in and out of the node . I
> > didn't block traffic on lo.
> >
> > any help would be appreciated.
>
> On EL6, cman is the quorum provider. You need to have a skeleton
> cluster.conf setup with it's fencing passed over to pacemaker via
> fence_pcmk.
>
> It you use pcs/pcsd, it will configure everything for you. Do NOT
> configure corosync directly; You need to configure it inside cman
> itself. Reset corosync.conf back to defaults.
>
> Reference;
>
> http://clusterlabs.org/doc/en-US/Pacemaker/1.1-plugin/html-
> single/Clusters_from_Scratch/index.html
>
> --
> Digimer
> Papers and Projects: https://alteeve.com/w/
> "I am, somehow, less interested in the weight and convolutions of
> Einstein’s brain than in the near certainty that people of equal talent
> have lived and died in cotton fields and sweatshops." - Stephen Jay Gould
>
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