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Re: [Linux-cluster] Basic Active Active File Server


For what it's worth, I have had a similar problem, with our central networking department telling me that "it should work". I have had a single node unable to join the 3-node cluster I'm currently trying to get working. All physical machines,
no VMs.

Solution: Hook them all up on the same switch, no more problems with that part...

Jason Fitzpatrick wrote:

I have tried both multicast and broadcast to no avail, as above I am
moving the systems to the same ESX to try and rule out the networking
end of things, I have not tried the tcpdump but was running wireshark
in an attempt to do the same as you recommended


On 21 June 2010 16:49, Kaloyan Kovachev <kkovachev varna net> wrote:
On Mon, 21 Jun 2010 16:07:34 +0100, Jason Fitzpatrick
<jayfitzpatrick gmail com> wrote:
Hi all

I am having no end of trouble getting a basic Active Active Cluster
working. at the moment it is in test / proof of concept and has manual
fencing in place but I cannot for the life of me get the 2 nodes to
join to the one cluster (they both report joined in crm_tool status
but only to a local clustered instance if that makes any sence)

I have tried to use luci and system-config-cluster to get this up and
running and have been at it over a week, the network guys swear that
there is nothing blocking multicast traffic between them and the
firewalls have been disabled (they are on the same VLAN but connected
to different switches) servers have been rebuilt and have RHEL 5.5

your problem is the multicast traffic - check with tcpdump if it is
comming to the other server at all (network) and if it is, then doublecheck
the firewall.
alternatively you may try using broadcast instead of multicast

Shared Storage is being provided by an Active Active DRBD setup
(tested and working)

I have attached a copy of my cluster.conf

Thanks in advance



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