Getting error, need a bit of guidance...

[Aaron]

I’m new and not as experienced as I would like with java applications, but I have a need to use a monitoring tool like this to help monitor my webserver.  I’m using tomcat5.5 on FreeBSD.

 

I tried following the instructions on the website.  Copied the 2 jars into the webapps restarted tomcat, but getting errors.

 

Is there anyone who can help point me how to troubleshoot this?  Thanks in advance.

 

Aaron

 

Error:

 

2010-11-18 20:53:53,214 ERROR [/jasperserver],main:3670 - Exception starting filter monitoring

java.lang.InternalError: errno: 2 error: Unable to open /compat/linux/proc/self/stat

 

       at com.sun.management.UnixOperatingSystem.getCommittedVirtualMemorySize(Native Method)

       at net.bull.javamelody.MemoryInformations.buildMemoryDetails(MemoryInformations.java:118)

       at net.bull.javamelody.MemoryInformations.<init>(MemoryInformations.java:84)

       at net.bull.javamelody.JavaInformations.<init>(JavaInformations.java:136)

       at net.bull.javamelody.Collector.collectLocalContextWithoutErrors(Collector.java:233)

       at net.bull.javamelody.MonitoringFilter.initCollect(MonitoringFilter.java:265)

       at net.bull.javamelody.MonitoringFilter.init(MonitoringFilter.java:139)

       at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:221)

       at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:302)

       at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:78)

       at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3666)

       at org.apache.catalina.core.StandardContext.start(StandardContext.java:4258)

       at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)

       at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)

       at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)

       at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:980)

       at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:943)

       at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:500)

       at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1203)

       at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:319)

       at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)

       at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022)

       at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)

       at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)

       at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)

       at org.apache.catalina.core.StandardService.start(StandardService.java:448)

       at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)

       at org.apache.catalina.startup.Catalina.start(Catalina.java:552)

       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

       at java.lang.reflect.Method.invoke(Method.java:597)

       at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)

       at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)

 

[evernat]

For this question, there is a start of response in issue 65:
http://code.google.com/p/javamelody/issues/detail?id=65