CentOS - Mar 2009 - Two sets of Heartbeat HTTPD clusters on same subnet

Hi all,

I am new to Hearbeat so please be kind :) I also posted this on
Linux-HA lists with no responses so I posted it here.

I have successfully configure two machines to use heartbeat to cluster
httpd. The two nodes are called etk-1 and etk-2. I am trying to
configure another two machines to act as a separate cluster (on the
same IP subnet). These two nodes are called radu-1 and radu-2.

Obviously being a broadcast protocol radu-1 and radu-2 get these
messages from etk-1 and I can't seem to get radu-1 and radu-2 to
cluster (mostly probably because they are not getting the messages
from the right nodes).

Should I just change the name of the test, if I do that I get heaps of
WARNING log messages.

Is it possible to have two sets of clusters in the one IP subnet?

If yes what do I have to change so these clusters don't send messages
to the wrong nodes.

heartbeat[3745]: 2009/03/30_04:48:02 ERROR: process_status_message:
bad node [etk-1] in message
heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG: Dumping message with 10 fields
heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[0] : [t=NS_ackmsg]
heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[1] : [dest= etk-2]
heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[2] : [ackseq=1a9601]
heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[3] :
[(1)destuuid=0xdf38de8(37 28)]
heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[4] : [src= etk-1]
heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[5] :
[(1)srcuuid=0xdf39248(36 27)]
heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[6] : [hg=499a2a65]
heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[7] : [ts=49cfb452]
heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[8] : [ttl=3]


-- 
"The secret impresses no-one, the trick you use it for is everything"
- Alfred Borden (The Prestiege)

> Is it possible to have two sets of clusters in the one IP subnet?
Indeed, it is
> If yes what do I have to change so these clusters don't send messages
> to the wrong nodes.
Somebody might be able to help if you post your configuration files
(ha.cf and haresources) for both clusters.

Even better do it your self it's not really difficould:
try assigning different udp port for broadcast in?both the
clusters,?default port used is #udpport 694 you also need them to be
running in different chroot environments.

Per
--- Original message follows ---
SUBJECT:?Re: [CentOS] Two sets of Heartbeat HTTPD clusters on same
subnet
FROM: ?"Kumar, Ashish" 
TO:?"CentOS mailing list" 
DATE:?01-04-2009 18:03
> Is it possible to have two sets of clusters in the one IP subnet?
Indeed, it is
> If yes what do I have to change so these clusters don't send
messages
> to the wrong nodes.
Somebody might be able to help if you post your configuration files
(ha.cf and haresources) for both clusters.
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Devraj Mukherjee wrote:
> Hi all,
> 
> I am new to Hearbeat so please be kind :) I also posted this on
> Linux-HA lists with no responses so I posted it here.
> 
> I have successfully configure two machines to use heartbeat to cluster
> httpd. The two nodes are called etk-1 and etk-2. I am trying to
> configure another two machines to act as a separate cluster (on the
> same IP subnet). These two nodes are called radu-1 and radu-2.
> 
> Obviously being a broadcast protocol radu-1 and radu-2 get these
> messages from etk-1 and I can't seem to get radu-1 and radu-2 to
> cluster (mostly probably because they are not getting the messages
> from the right nodes).
> 
> Should I just change the name of the test, if I do that I get heaps of
> WARNING log messages.
> 
> Is it possible to have two sets of clusters in the one IP subnet?
> 
> If yes what do I have to change so these clusters don't send messages
> to the wrong nodes.
> 
> heartbeat[3745]: 2009/03/30_04:48:02 ERROR: process_status_message:
> bad node [etk-1] in message
> heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG: Dumping message with 10
fields
> heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[0] : [t=NS_ackmsg]
> heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[1] : [dest= etk-2]
> heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[2] : [ackseq=1a9601]
> heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[3] :
> [(1)destuuid=0xdf38de8(37 28)]
> heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[4] : [src= etk-1]
> heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[5] :
> [(1)srcuuid=0xdf39248(36 27)]
> heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[6] : [hg=499a2a65]
> heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[7] : [ts=49cfb452]
> heartbeat[3745]: 2009/03/30_04:48:02 ERROR: MSG[8] : [ttl=3]
> 
> 
I suppose your /etc/ha.d/authkeys files are configured correctly (and 
not configured to use the same 'secret' for both clusters)
You can change the port used by the second cluster , or even better 
(what i do usually) broadcast in a separate vlan for the heartbeat 
signal (you don't broadcast to the production network that way, so more 
efficient)


-- 
--
Fabian Arrotin
  idea=`grep -i clue /dev/brain`
  test -z "$idea" && echo "sorry, init 6 in
progress" || sh ./answer.sh