@Chiranjeevi Nimmala If you are looking at kerberising solrcloud, below link should help :
https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.5/bk_security/content/solr_ranger_configure_s...
Just to note, as you have AD, you need to create the principals for solr in AD , not need of setting up MIT 🙂
Also, if you already have a spnego keytab in /etc/security/keytabs/spnego.service.keytab , no need to generate the HTTP keytab, this will create issues for services that use spnego.service.keytab.
Just copy /etc/security/keytabs/spnego.service.keytab to /opt/solr/conf/HTTP.keytab