Question Tomcat not functioning

[BramP]

Hello all,

Happy Plesk user for quite a while, unfortunately I have a problem with Apache Tomcat which I can't seem to resolve so I hoped anybody could help me.

In the past I had Tomcat running fine, however it seems like it is turned of and might be misconfigured. When I check the currently turned on services Tomcat is turned of. In the update and upgrade menu where I first installed Tomcat Java Servlets, when I check the Plesk services it is notlisted there anymore. My guess is that there is a problem over there but unfortunately I am not able to find it in the KB.

Does anybody know what the problem might be?

Regards,

 

[UFHH01]

Hi BramP,

did you consider to investigate the correspnding logs from tomcat? ( => /var/log/tomcatX , where X depend on your current installed tomcat version on your server )

 

[BramP]

Hello @UFHH01 ,

Thank you so much for your reply and suggestion. By checking the logs I found that there are quite many HTTP Get requests and furthermore I found the following log:
http://pastebin.com/bGntyR0L

 

[UFHH01]

Hi BramP,

I'm not a tomcat Expert, but I would focus on:

mrt 11, 2017 1:28:04 AM org.apache.catalina.core.StandardContext listenerStop
SEVERE: Exception sending context destroyed event to listener instance of class websocket.drawboard.DrawboardContextListener
java.lang.NoClassDefFoundError: javax/websocket/Endpoint

...

Caused by: java.lang.ClassNotFoundException: javax.websocket.Endpoint

...

... while trying to solve your issue.​