Apache Solr 4.6.1 Tomcat7 Setup on Ubuntu 12.04 ( Simple and Clear Steps )

We need a tomcat server to install and run Apache solr search engine .

Setup Java run time environment by following blog post 

http://gagannaidu.blogspot.in/2013/06/installation-of-oracle-java-7-on-ubuntu.html

Install Tomcat 7 and Solr 4.6

sudo apt-get install tomcat7 tomcat7-admin

Click here to download Solr : http://apache.tradebit.com/pub/lucene/solr/4.6.1/solr-4.6.1.zip

tar zxvf solr-4.6.1.tgz

sudo mv solr-4.6.1 /usr/share/solr

Setup Solr on Tomcat

sudo cp /usr/share/solr/example/webapps/solr.war /usr/share/solr/example/multicore/solr.war 

From the Apache Solr lib, copy all the jar files to the tomcat lib

sudo cp -r solr/example/lib/ext/* /usr/share/tomcat7/lib

sudo cp -r solr/example/resources/log4j.properties /usr/share/tomcat7/lib

Edit /usr/share/tomcat7/lib/log4j.properties and set your log path by setting

solr.log=/usr/share/solr

Now add solr to the Catalina config

cd /etc/tomcat7/Catalina/localhost

sudo gedit solr.xml

add the following to solr.xml

<Context docBase="/usr/share/solr/example/multicore/solr.war" debug="0" crossContext="true">

  <Environment name="solr/home" type="java.lang.String" value="/usr/share/solr/example/multicore" override="true" />

</Context>

Setup Tomcat Manager

sudo gedit /etc/tomcat7/tomcat-users.xml

add the tomcat user within the users block:

<tomcat-users>

  <role rolename="manager-gui"/>

  <user username="giluxe" password="giluxe" roles="manager-gui"/>

</tomcat-users>

sudo chown -R tomcat7 /usr/share/solr/example/multicore

Test tomcat

sudo service tomcat7 restart

Test Solr

Navigate to  http://localhost:8080/solr

Note : If you get any problem while restarting tomcat   " no JDK found - please set JAVA_HOME "

follow this step 

sudo gedit /etc/default/tomcat7  

uncomment JAVA_HOME path .