I am trying Solr for the first time, and I am stuck at the error "SEVERE: Error filterStart"
My setup: - Centos 6.x - OpenJDK 1.7 - Tomcat 7 >From reading [1] I believe the issue is missing JAR files, but I have no idea where to put them, even the wiki is a bit vague on that. Lib directories that I am aware of - /usr/share/tomcat/lib (for tomcat) - /opt/solr/example/solr/collection1/lib (for my instance) This is the error I get: Apr 15, 2014 11:35:36 PM org.apache.catalina.core.StandardContext filterStart SEVERE: Exception starting filter SolrRequestFilter java.lang.NoClassDefFoundError: Failed to initialize Apache Solr: Could not find necessary SLF4j logging jars. If using Jetty, the SLF4j logging jars need to go in the jetty lib/ext directory. For other containers, the corresponding directory should be used. For more information, see: http://wiki.apache.org/solr/SolrLogging at org.apache.solr.servlet.CheckLoggingConfiguration.check(CheckLoggingConfiguration.java:28) at org.apache.solr.servlet.BaseSolrFilter.<clinit>(BaseSolrFilter.java:31) 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:374) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:134) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:256) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:103) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4650) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5306) 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:633) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:657) at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1637) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:744) I would like to get past this so I can try out Solr. I have gone as far as putting `<lib dir="/opt/solr/example/solr/collection1/lib/" regex="*\.jar" />` into /opt/solr/example/solr/collection1/conf/solrconfig.xml but that did not help. I have used Java before, but purely for academic purposes, so I do not have experience resolving these dependencies. ---- [1] https://wiki.apache.org/solr/SolrLogging
