tomcat6 not run solr4.9 on centos : Application at context path /solr could not be started

Question

I was following this instructions, but it didn't work.

I use tomcat6 and Solr4.9 on CentOS.

Tomcat run perfect, but when I press start the Solr in Tomcat Web Application Manager, this message appear:

FAIL - Application at context path /solr could not be started

In /solr I've

In my web.xml I have :

<env-entry>
  <env-entry-name>solr/home</env-entry-name>
  <env-entry-value>/home/solr</env-entry-value>
  <env-entry-type>java.lang.String</env-entry-type>
</env-entry>

This is in the error log:

Jun 26, 2014 4:34:30 PM org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8009 Jun 26, 2014 4:34:30 PM org.apache.jk.server.JkMain start INFO: Jk running ID=0 time=0/25 config=null Jun 26, 2014 4:34:30 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 1045 ms Jun 26, 2014 4:34:51 PM org.apache.catalina.core.StandardContext start SEVERE: Error filterStart Jun 26, 2014 4:34:51 PM org.apache.catalina.core.StandardContext start SEVERE: Context [/solr] startup failed due to previous errors root@server.smarttags-lab.com [conf]#

And what is there on `/solr`? Is the context path set correctly? What is the configuration. We need more info. — EWit, Jun 26 '14 at 16:27
ok this is web.xml " solr/home /home/solr java.lang.String " i just change this file — user3780152, Jun 26 '14 at 16:37
this is the error log " Jun 26, 2014 4:34:30 PM org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8009 Jun 26, 2014 4:34:30 PM org.apache.jk.server.JkMain start INFO: Jk running ID=0 time=0/25 config=null Jun 26, 2014 4:34:30 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 1045 ms Jun 26, 2014 4:34:51 PM org.apache.catalina.core.StandardContext start SEVERE: Error filterStart Jun 26, 2014 4:34:51 PM org.apache.catalina.core.StandardContext start SEVERE: Context [/solr] startup failed due to previous errors root@server.smarttags-lab.com [conf]# — user3780152, Jun 26 '14 at 16:48
yes know i work on ubuntu localy after that i will go back to centos — user3780152, Sep 22 '14 at 09:32
Possible duplicate of [How to fix Solr Exception: Could not find necessary SLF4j logging jars?](http://stackoverflow.com/questions/16415948/how-to-fix-solr-exception-could-not-find-necessary-slf4j-logging-jars) — kenorb, Feb 09 '16 at 19:21

score 0 · Answer 1 · edited May 23 '17 at 12:23

The error:

Application at context path /solr could not be started.

is very general, so you should look for more specific error further up in your localhost log.

The most common issue is misconfiguration of Solr (assuming all the files are in the right place) by not placing necessary SLF4j logging jars into Java class folder therefore Apache Solr failed to initialize.

If that's the case, you need to copy the SLF4j logging jars from <solr>/example/lib/ext/*.jar into Tomcat Lib (e.g. TOMCAT_HOME/lib, /usr/share/tomcat/lib) or Webapp Lib directory (e.g. TOMCAT_HOME/webapps/solr/WEB-INF/lib). These jars will set up SLF4J and log4j. If you're using Jetty, these SLF4j logging jars need to go in the jetty lib/ext directory. For other containers, the corresponding directory should be used, so check SolrLogging page for further information.

See: How to fix Solr Exception: Could not find necessary SLF4j logging jars? for more details.

tomcat6 not run solr4.9 on centos : Application at context path /solr could not be started

1 Answers1