Nagios Support Forum

Hi Everyone,

We have setup Weblogic monitoring using WLSAgent and we are getting the following error when WLSagent is trying to connect to the Weblogic Server. Not sure what could be reason for this error?
Weblogic version is 12c
Java version is 1.7


prdomn1@mcspetappls001:prdomn1/wlsagent/wlsagent>wget -q -O - 'http://10.175.209.1:9090/wlsagent/WLSAgent' --post-data='hostname=10.175.209.1&port=27460&username=admin&password=********'
2019-09-04 17:13:23.629:WARN:oejs.ServletHandler:Error for /wlsagent/WLSAgent
java.lang.NoClassDefFoundError: weblogic/utils/io/UnsyncByteArrayInputStream
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at weblogic.transaction.internal.PlatformHelper.getPlatformHelper(PlatformHelper.java:29)
at weblogic.transaction.internal.TransactionHelperImpl.<clinit>(TransactionHelperImpl.java:18)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at weblogic.transaction.TransactionHelper.getTransactionHelper(TransactionHelper.java:71)
at weblogic.corba.client.ClientORBInitializer.initialize(ClientORBInitializer.java:94)
at weblogic.jndi.WLInitialContextFactory.<init>(WLInitialContextFactory.java:34)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at java.lang.Class.newInstance(Class.java:383)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:671)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:307)
at javax.naming.InitialContext.init(InitialContext.java:242)
at javax.naming.InitialContext.<init>(InitialContext.java:216)
at weblogic.management.remote.common.ClientProviderBase.makeConnection(ClientProviderBase.java:215)
at weblogic.management.remote.common.ClientProviderBase.newJMXConnector(ClientProviderBase.java:119)
at javax.management.remote.JMXConnectorFactory.newJMXConnector(JMXConnectorFactory.java:369)
at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:267)
at net.wait4it.nagios.wlsagent.core.WLSProxy.init(WLSProxy.java:85)
at net.wait4it.nagios.wlsagent.core.WLSStatsManager.process(Unknown Source)
at net.wait4it.nagios.wlsagent.core.WLSServlet.doGet(Unknown Source)
at net.wait4it.nagios.wlsagent.core.WLSServlet.doPost(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:565)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:479)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1031)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:965)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
at org.eclipse.jetty.server.Server.handle(Server.java:349)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:452)
at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:894)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:948)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:857)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:77)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)
at java.lang.Thread.run(Thread.java:745)
Caused by:
java.lang.ClassNotFoundException: weblogic.utils.io.UnsyncByteArrayInputStream
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at weblogic.transaction.internal.PlatformHelper.getPlatformHelper(PlatformHelper.java:29)
at weblogic.transaction.internal.TransactionHelperImpl.<clinit>(TransactionHelperImpl.java:18)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at weblogic.transaction.TransactionHelper.getTransactionHelper(TransactionHelper.java:71)
at weblogic.corba.client.ClientORBInitializer.initialize(ClientORBInitializer.java:94)
at weblogic.jndi.WLInitialContextFactory.<init>(WLInitialContextFactory.java:34)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at java.lang.Class.newInstance(Class.java:383)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:671)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:307)
at javax.naming.InitialContext.init(InitialContext.java:242)
at javax.naming.InitialContext.<init>(InitialContext.java:216)
at weblogic.management.remote.common.ClientProviderBase.makeConnection(ClientProviderBase.java:215)
at weblogic.management.remote.common.ClientProviderBase.newJMXConnector(ClientProviderBase.java:119)
at javax.management.remote.JMXConnectorFactory.newJMXConnector(JMXConnectorFactory.java:369)
at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:267)
at net.wait4it.nagios.wlsagent.core.WLSProxy.init(WLSProxy.java:85)
at net.wait4it.nagios.wlsagent.core.WLSStatsManager.process(Unknown Source)
at net.wait4it.nagios.wlsagent.core.WLSServlet.doGet(Unknown Source)
at net.wait4it.nagios.wlsagent.core.WLSServlet.doPost(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:565)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:479)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:225)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1031)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:406)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:965)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)
at org.eclipse.jetty.server.Server.handle(Server.java:349)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:452)
at org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:894)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:948)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:857)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:77)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:609)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:45)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:599)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:534)
at java.lang.Thread.run(Thread.java:745)

Did you follow all the steps on page 2 of this doc?
https://assets.nagios.com/downloads/nag ... ios-XI.pdf

I did follow all the steps in from this document.

Please show the output of the following on the remote server: