[ClusterLabs] Interface confusion

[Adam Budziński]

Hello Tomas,

Thank you! So far I  need to say how great this community is, would never
expect so much positive vibes! A big thank you your doing a great job!

Now let's talk business :)

So if pcsd is using ring0 and it fails will ring1 not be used at all?

So in regards to VMware that would mean that the interface should be
configured with a network that can access the  vCenter to fence right? But
wouldn't it then use only ring0 so if that fails it wouldn't switch to
ring1?

Thank you!

pt., 15.03.2019, 13:14 użytkownik Tomas Jelinek <tojeline at redhat.com>
napisał:

> Dne 15. 03. 19 v 12:32 Adam Budziński napsal(a):
> > Hello Folks,____
> >
> > __ __
> >
> > Tow node active/passive VMware VM cluster.____
> >
> > __ __
> >
> > /etc/hosts____
> >
> > __ __
> >
> > 10.116.63.83    srv1____
> >
> > 10.116.63.84    srv2____
> >
> > 172.16.21.12    srv2cr1____
> >
> > 172.16.22.12    srv2cr2____
> >
> > 172.16.21.11    srv1cr1____
> >
> > 172.16.22.11    srv1cr2____
> >
> > __ __
> >
> > __ __
> >
> > I have 3 NIC’s on each VM:____
> >
> > __ __
> >
> > 10.116.63.83    srv1  and 10.116.63.84    srv2 are networks used to
> > access the VM’s via SSH or any resource directly if not via a VIP.____
> >
> > __ __
> >
> > Everything with cr in its name is used for corosync communication, so
> > basically I have two rings (this are two no routable networks just for
> > that).____
> >
> > __ __
> >
> > My questions are:____
> >
> > __ __
> >
> > __1.__With ‘pcs cluster auth’ which interface / interfaces should I use
> > ?____
>
> Hi Adam,
>
> I can see you are using pcs-0.9.x. In that case you should do:
> pcs cluster auth srv1cr1 srv2cr1
>
> In other words, use the first address of each node.
> Authenticating all the other addresses should not cause any issues. It
> is pointless, though, as pcs only communicates via ring0 addresses.
>
> >
> > __2.__With ‘pcs cluster setup –name’ I would use the corosync interfaces
> > e.g. ‘pcs cluster setup –name MyCluster srv1cr1,srv1cr2 srv2cr1,srv2cr2’
> > right ?____
>
> Yes, that is correct.
>
> >
> > __3.__With fence_vmware_soap inpcmk_host_map="X:VM_C;X:VM:OTRS_D" which
> > interface should replace X ?____
>
> X should be replaced by node names as seen by pacemaker. Once you set up
> and start your cluster, run 'pcs status' to get (amongs other info) the
> node names. In your configuration, they should be srv1cr1 and srv2cr1.
>
>
> Regards,
> Tomas
>
> > __ __
> >
> > Thank you!
> >
> >
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