Rick Noel
Systems Programmer | Westwood One
[email protected]

-----Original Message-----
From: Chuck Caldarale <[email protected]> 
Sent: Monday, April 22, 2024 4:41 PM
To: Tomcat Users List <[email protected]>
Subject: [EXT]Re: Tomcat 10 skipping state transfer. No members active in 
cluster group


> On Apr 22, 2024, at 09:54, Rick Noel <[email protected]> wrote:
>
> Could someone please explain why I am getting the error............
>
> skipping state transfer. No members active in cluster group


Need a bit more information.


> On one sever the reciever  is bound  to                          
> 127.0.0.1:4002
> And on the other server the receiver is bound to       127.0.0.1:4001


Are both Tomcat instances running on the same system (VM or real)?

Tomcats are two different VMs


> But both servers report ->     no active members in cluster group


Indicates they can’t see each other, so they could be on different systems or 
in separate VMs (containers).


> Apr 22, 2024 10:20:01 AM org.apache.catalina.util.SessionIdGeneratorBase 
> createSecureRandom
> WARNING: Creation of SecureRandom instance for session ID generation using 
> [SHA1PRNG] took [51,791] milliseconds.


This long random ID generation is typical for a low-entropy VM or container 
rather than a real system. If the two Tomcats are in separate containers, 
you’ll have to configure clustering to use each container’s published IP 
address rather than assuming they can share the same loopback network.

What do you mean each containers published IP

  - Chuck


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