JCPs in active/active environment only start on one server
Article ID: 367342
Updated On:
Products
Issue/Introduction
In an active/active multi server setup, the JCP processes only start on one server.
Trying to start the JCP on the second server returned the error message:
U02001017 It was not possible to create a listen socket because port number '8444' is already in use.
Environment
Automic v21
Cause
The hostname in the ucsrv.ini file on both AE servers had the same server name.
Resolution
Stopped both AE systems.
On the second server, updated the ucsrv.ini to change the hostname value from
myserver1.domain.com
to
myserver2.domain.com
Started Automic on server one, verified it was up and running and could log in, then started Automic on server two.
JCPs were running on both servers as expected.
Additional Information
The problem was that on both servers, ucsrv.ini had
WS.PORT=8444-8445
but they also both had the hostname set as
hostname=myserver1.domain.com
The system on server 2 was started, and JCPs were started as myserver1.domain.com
Then the system on server 1 was started and the JCP couldn't start because port 8444 was already being used by myserver1.domain.com.
As soon as the hostname on server 2 was updated correctly, everything started as expected.
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