ERA not starting after few days running on 6.5 version

[martyz 4]

Hi guys, after few days running ERAS Virtual Appliance (upgraded from 6.3 to 6.5) suddenly ERA web service stopped working, after restart VM it is same - webUI says

HTTP Status 404 -
type Status report
message
description The requested resource () is not available.
Apache Tomcat/6.0.24

and after stoping and starting tomcat 

/etc/init.d/tomcat6 start

/usr/share/tomcat6/logs/catalina.out says

Apr 06, 2017 11:44:31 AM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
Apr 06, 2017 11:44:32 AM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8443
Apr 06, 2017 11:44:32 AM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 831 ms
Apr 06, 2017 11:44:32 AM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Apr 06, 2017 11:44:32 AM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.24
Apr 06, 2017 11:44:32 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory era
Apr 06, 2017 11:44:32 AM org.apache.catalina.core.StandardContext resourcesStart
SEVERE: Error starting static Resources
java.lang.IllegalArgumentException: Document base /usr/share/tomcat6/webapps/era does not exist or is not a readable directory
	at org.apache.naming.resources.FileDirContext.setDocBase(FileDirContext.java:142)
	at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4358)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4527)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526)
	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)
	at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)
	at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
	at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
	at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
	at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)
	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
	at org.apache.catalina.core.StandardService.start(StandardService.java:516)
	at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:593)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)

Apr 06, 2017 11:44:32 AM org.apache.catalina.core.StandardContext start
SEVERE: Error in resourceStart()
Apr 06, 2017 11:44:32 AM org.apache.catalina.core.StandardContext start
SEVERE: Error getConfigured
Apr 06, 2017 11:44:32 AM org.apache.catalina.core.StandardContext start
SEVERE: Context [/era] startup failed due to previous errors
Apr 06, 2017 11:44:32 AM org.apache.catalina.core.StandardContext stop
INFO: Container org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/era] has not been started
Apr 06, 2017 11:44:32 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory ROOT
Apr 06, 2017 11:44:32 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory era.bkp
Apr 06, 2017 11:44:32 AM sk.eset.era.g2webconsole.server.modules.logger.FileLogWriter addItem
INFO: [2017-04-06 11:44:32.754] V1 [] <INFO> ERA Web Server starting...
Apr 06, 2017 11:44:32 AM sk.eset.era.g2webconsole.server.modules.logger.FileLogWriter addItem
INFO: [2017-04-06 11:44:32.764] V1 [] <INFO> ERA Web Server Version: 6.2.155.0
Apr 06, 2017 11:44:32 AM sk.eset.era.g2webconsole.server.modules.logger.FileLogWriter addItem
INFO: [2017-04-06 11:44:32.767] V1 [] <DEBUG> ERA Web Server starting...
Apr 06, 2017 11:44:32 AM sk.eset.era.g2webconsole.server.modules.logger.FileLogWriter addItem
INFO: [2017-04-06 11:44:32.768] V1 [] <DEBUG> ERA Web Server Version:6.2.155.0
Apr 06, 2017 11:44:32 AM sk.eset.era.g2webconsole.server.modules.logger.FileLogWriter addItem
INFO: [2017-04-06 11:44:32.802] V1 [] <INFO> ERA Web Server has started.
Apr 06, 2017 11:44:32 AM sk.eset.era.g2webconsole.server.modules.logger.FileLogWriter addItem
INFO: [2017-04-06 11:44:32.804] V1 [] <DEBUG> contextInitialized
Apr 06, 2017 11:44:32 AM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8443
Apr 06, 2017 11:44:32 AM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Apr 06, 2017 11:44:32 AM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/18  config=null
Apr 06, 2017 11:44:32 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 575 ms

any ideas pls? Unfortunately no snapshot - no way back ...

Thank you

[martyz 4]

selfsolved - I should have read logs carefully - somehow rights were scrambled

ll /usr/share/tomcat6/webapps/
celkem 12
drwxr-x---. 5 root   root   4096  6. dub 10.02 era
drwxrwxrwx. 5 tomcat tomcat 4096 15. zář  2015 era.bkp
drwxr-xr-x. 2 root   root   4096 28. kvě  2014 ROOT

changed ownership to tomcat and boom - webIF up and ready ;-)