Geoserver stopped working in centOS server - centos

The Geoserver was working fine. I restarted Tomcat on CentOS. Then after that, Geoserver stopped working.
I am getting following error:
Tomcat version: 7.0.99
Geoserver version: 2.18.2
Update:

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I have nodemanager running in 9.2 env. When managed server is started with nodemanager; no files/dirs are created under domainhome/servers/managed_home/data(nodemanager).
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I am using JBOSS EAP 6.3.GA on CentOs with open JDK 6 64 bit.
Previously, I started the JBOSS in standalone mode and it was working well.
Now, I was trying to start JBOSS in domain mode with 1 server only. It was working fine but after 20-30 mintues it shutdown itself with no error printing in log file.
I am unable to find what causes the error.
Need help.

Tomcat integrated in Eclipse starts in normal mode, but fails to start in debug mode (on CentOS platform)

I'm using tomcat 6 integrated with eclipse (kepler) on centOS platform. When I start tomcat on normal mode, it works fine but when I try to start it in debug mode, it fails to start.
It gives the error "Server Tomcat v6.0 Server at localhost failed to start."
Has anyone faced this problem before? Any suggeastions ?