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From Felix Schumacher <felix.schumac...@internetallee.de>
Subject Re: Is LDAP connection failing?
Date Wed, 11 Apr 2018 09:30:26 GMT
Am 05.04.2018 15:32, schrieb Suvendu Sekhar Mondal:
> Hello Everyone,
> 
> Recently in one of our environments I am seeing following log in
> Catalina.out. It seems that LDAP connection is failing. This issue is
> sporadic and goes away with Tomcat recycle.
> 
> One interesting thing is "localhost:389" part. I could not find out
> any configuration related to that. It could happen that I am not
> looking at the correct place.
> 
> We have 200+ JVMs out there which were starting up simultaneously but
> this happens for some of them sporadically. I suspect that some race
> condition might be causing this failure but could not found any
> evidence so far. Can someone please suggest how can I identify what is
> failing? and why it is failing?

It would be nice to include the version of tomcat you are using.
(I am guessing it is something like 7.0.55 as the source code matches 
the line
numbers in the stacktrace)

If it is this version, then the message will be generated, when your 
ldap server
configured by connectionURL is not reachable on startup. Tomcat will try 
to
connect to the ldap server configured by alternateURL. It seems to me, 
that
you have not configured one (again guessing, as you didn't give 
configuration
details). In that case the jre is using localhost:389 and as there is no
LDAP server listening you get the exception.

Regards,
  Felix

> 
> Thanks!
> Suvendu
> 
> Stack trace:
> 2018-04-02 20:34:27,293 INFO org.apache.catalina.startup.HostConfig -
> Deploying web application directory D:\xxx\webapps\ROOT
> 2018-04-02 20:34:33,341 SEVERE org.apache.catalina.realm.CombinedRealm
> - Failed to start "org.apache.catalina.realm.JNDIRealm/1.0" realm
> org.apache.catalina.LifecycleException: Failed to start component
> [Realm[JNDIRealm]]
>      at 
> org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
>      at
> org.apache.catalina.realm.CombinedRealm.startInternal(CombinedRealm.java:201)
>      at 
> org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
>      at
> org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5373)
>      at 
> org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
>      at
> org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
>      at 
> org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
>      at 
> org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)
>      at
> org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1247)
>      at
> org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1898)
>      at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>      at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>      at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>      at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>      at java.lang.Thread.run(Thread.java:745)
> Caused by: org.apache.catalina.LifecycleException: Exception opening
> directory server connection
>      at 
> org.apache.catalina.realm.JNDIRealm.startInternal(JNDIRealm.java:2191)
>      at 
> org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
>      ... 14 more
> Caused by: javax.naming.CommunicationException: localhost:389 [Root
> exception is java.net.ConnectException: Connection refused: connect]
>      at com.sun.jndi.ldap.Connection.<init>(Connection.java:216)
>      at com.sun.jndi.ldap.LdapClient.<init>(LdapClient.java:137)
>      at com.sun.jndi.ldap.LdapClient.getInstance(LdapClient.java:1614)
>      at com.sun.jndi.ldap.LdapCtx.connect(LdapCtx.java:2746)
>      at com.sun.jndi.ldap.LdapCtx.<init>(LdapCtx.java:319)
>      at
> com.sun.jndi.ldap.LdapCtxFactory.getInitialContext(LdapCtxFactory.java:70)
>      at 
> javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:684)
>      at 
> javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:313)
>      at javax.naming.InitialContext.init(InitialContext.java:244)
>      at javax.naming.InitialContext.<init>(InitialContext.java:216)
>      at
> javax.naming.directory.InitialDirContext.<init>(InitialDirContext.java:101)
>      at org.apache.catalina.realm.JNDIRealm.open(JNDIRealm.java:2108)
>      at 
> org.apache.catalina.realm.JNDIRealm.startInternal(JNDIRealm.java:2189)
>      ... 15 more
> Caused by: java.net.ConnectException: Connection refused: connect
>      at java.net.TwoStacksPlainSocketImpl.socketConnect(Native Method)
>      at
> java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
>      at
> java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
>      at
> java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
>      at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
>      at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
>      at java.net.Socket.connect(Socket.java:589)
>      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>      at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>      at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>      at java.lang.reflect.Method.invoke(Method.java:498)
>      at com.sun.jndi.ldap.Connection.createSocket(Connection.java:350)
>      at com.sun.jndi.ldap.Connection.<init>(Connection.java:203)
>      ... 27 more
> 
> 2018-04-02 20:34:35,059 INFO org.apache.catalina.startup.HostConfig -
> Deployment of web application directory D:\xxx\webapps\ROOT has
> finished in 7,766 ms
> 2018-04-02 20:34:35,075 INFO
> org.apache.coyote.http11.Http11AprProtocol - Starting ProtocolHandler
> ["http-apr-18110"]
> 2018-04-02 20:34:35,091 INFO org.apache.coyote.ajp.AjpAprProtocol -
> Starting ProtocolHandler ["ajp-apr-18111"]
> 2018-04-02 20:34:35,091 INFO org.apache.catalina.startup.Catalina -
> Server startup in 235096 ms
> 
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