Upgrading Sonatype nexus from 1.5 to 1.6

Here are the steps followed while upgrading Sonatype nexus server from 1.5 to 1.6 version in Linux server (RHEL)



1) Stop the nexus service
   service nexus stop
2) Copy the nexus 1.6.0 package to previously installed directory
     cp  nexus-oss-webapp-1.6.0-bundle.tar.gz  /usr/local
3) Extract nexus 1.6.0 package in a temp directory
    cd /usr/local/temp
    tar xvf ../nexus-oss-webapp-1.6.0-bundle.tar.gz
4) Copy nexus-oss-webapp-1.6.0 directory to installation directory
     mv /usr/local/temp/nexus-oss-webapp-1.6.0 /usr/local
5) Change ownership to the Unix user account nexus was running
    chown -R nexus:nexus nexus-oss-webapp-1.6.0
6) Create a softlink to the new nexus installation source directory
     ln -s nexus-oss-webapp-1.6.0 nexus
7) There are some changes in 'nexus' script and location of wrapper.conf. Hence we need to replace the previously installed /etc/init.d/nexus script
    diff nexus/bin/jsw/linux-x86-64/nexus /etc/init.d/nexus
     mv /etc/init.d/nexus /etc/init.d/nexus.old
     cp nexus/bin/jsw/linux-x86-64/nexus /etc/init.d/nexus
8) If you have made changes in old /etc/init.d/nexus script, restore it to the new script
    The notable change is the WRAPPER_CONF location got changed in 1.6 version. Hence correct path needs to be defined in /etc/init.d/nexus script
  For example, in our setup, we made these changes in old script, which is transferred to new script
   vi nexus

      #USER DEFINED VARIABLES
      NEXUS_HOME=/usr/local/nexus
      PLATFORM="linux-x86-64"
      JAVA_HOME=/usr/local/jdk1.6.0_27
       PATH="${JAVA_HOME}/bin:$PATH"

      # Wrapper
      WRAPPER_CMD="${NEXUS_HOME}/bin/jsw/${PLATFORM}/wrapper"
      WRAPPER_CONF="${NEXUS_HOME}/bin/jsw/conf/wrapper.conf"

     # Location of the pid file.
      PIDDIR="/var/run"

      #RUN_AS_USER=
      RUN_AS_USER=nexus
9) If you have changed the nexus storage location from the default /usr/local/sonatype-work or default tcp port, then make sure you update this path in the file nexus/conf/plexus.properties
     nexus-work=/export/nexus/sonatype-work/nexus
     application-port=8081

10) Restart nexus
    service nexus start