Solr

To take a backup, perform the following steps after the transition.

mv /etc/alternatives/solr-conf /etc/alternatives/solr-confhdp
mv /etc/alternatives/hue-conf /etc/alternatives/hue-confhdp
mv /etc/alternatives/hbase-solr-conf /etc/alternatives/hbase-solr-confhdp 
mv /var/lib/alternatives/solr-conf /var/lib/alternatives/solr-confhdp

On the Cloudera Manager UI:

Initialize Solr
Create Ranger Plug-in audit directory
Create HDFS Home directory
Start Solr service