Clustering with UDP

[joydeep.sarkar]

Dear All,

I am trying to form a cluster with 2 physical machines using UDP in Linux box. The goal is to achieve singleton clustering. Due to scarcity of Servers, I am using 2 Machines where two instances are already running in non-clustered mode. Let me elaborate the scenario below,

Server A is running instance A1.

Server B is running instance B1.

In both the servers I made a duplicate of  "All" instance and renamed the same (as masterslave) which I will refer as A2 and B2.

Now, I started both A2 and B2 with the same UDP address but they did not recognize each other. I did not get any exception either.

Following is the command that I used,

./run.sh -c masterslave -u 233.3.4.5 -Djboss.service.binding.set=ports-01 -Djboss.messaging.ServerPeerID=1

I see the following message only in both the server's log,

12:35:11,590 INFO  [GroupMember] I am (127.0.0.1:36935)
12:35:11,590 INFO  [GroupMember] New Members : 1 ([127.0.0.1:36935])
12:35:11,590 INFO  [GroupMember] All Members : 1 ([127.0.0.1:36935])

I am not really sure why the cluster is not being formed. Could anyone please help me with the same?

Sorry, forgot to mention, I am using JBoss5.1.0GA.

TIA,

Joydeep

[sandesh.satam]

It's seems like your hostname is binded to localhost, check your hosts file for hostname.

~SS

[joydeep.sarkar]

Hi,

In order to bind the IP I used '-b' option as follows. Even though all the services are bound to the respective IPs, the cluster is still not formed.

./run.sh -b 10.1.0.236 -c masterslave -u 233.3.4.5 -Djboss.service.binding.set=ports-01 -Djboss.messaging.ServerPeerID=1
14:07:46,618 INFO  [GroupMember] I am (10.1.0.71:47136)
14:07:46,619 INFO  [GroupMember] New Members : 1 ([10.1.0.71:47136])
14:07:46,619 INFO  [GroupMember] All Members : 1 ([10.1.0.71:47136])

./run.sh -b 10.1.0.71 -c masterslave -u 233.3.4.5 -Djboss.service.binding.set=ports-01 -Djboss.messaging.ServerPeerID=1

30:04,979 INFO  [GroupMember] I am (10.1.0.236:56131)
14:30:04,979 INFO  [GroupMember] New Members : 1 ([10.1.0.236:56131])
14:30:04,979 INFO  [GroupMember] All Members : 1 ([10.1.0.236:56131])

Is there any possibility that the UDP address I am using is wrong? In that case how do I check that?

Is there anything else that I need to check?

Regards,

Joydeep

[joydeep.sarkar]

Hi,

Not sure if this is any helpful info, but when I ping 233.3.4.5 on either machines, I receive reply only from the host IP. I tried the same with 228.8.8.8 as well, but still the same story.

I wonder if it has anything to do with configuration of UDP inside the instance.

Regards,

Joydeep
 

[joydeep.sarkar]

Hi,

Finally I have managed to form the cluster.

The reason was silly though.. the UDP addresses that I was trying out, were not configured.

Thanks a ton for the support.

Regards,

Joydeep