Coherence 3.6 and ECHO Service port (Port 7)
778958Aug 16 2010 — edited Nov 30 2010We are currently upgrading to Coherence 3.6 from 3.5. We have 2 WKA nodes running behind a firewall (on a virtual appliance cluster). WKA ports are already opened up in firewall.
In addition to this, we had to open up Port 7 (Used for ECHO Service) for a client node running on different machine to join the cluster.
Coherence 3.5 did not have this requirement.
Client nodes on the same virtual appliance cluster were able to join the coherence cluster even when Port 7 was blocked.
Could you tell us how Port 7 is used by Coherence ? Is it mandatory to open up this port for proper cluster formation? If yes, do we need to open it up for both TCP and UDP traffic?
Following is the error message that we get at the client node, when Port 7 is not open...
2010-08-16 16:49:10.989/33.062 Oracle Coherence GE 3.6.0.0 <Warning> (thread=Cluster, member=n/a): Delaying formation of a new cluster; failed to verify the reachability senior Member(Id=1, Timestamp=2010-08-13 21:25:31.911, Address=172.23.73.148:9010, MachineId=62100, Location=site:lss.emc.com,machine:lglor148,process:6488,member:srm_coherence_cache_server-0, Role=cache-server) IP