I am using HDP2.5.0
two questions :
1- do I have to install apache Solr for Ranger ?
2- If its mandatory then does the Ranger installation from Ambari takes care of it or do I have to install it manually on command line?
1] For Ranger auditing, HDP 2.5 supports only Solr and HDFS. To view audits in Ranger UI, Solr is required.
2] Ambari Infra Solr is one option. The other option is to manage Solr outside of Ambari.
@Sami Ahmad , no, Ranger does not install Solr for you. What @vperiasamy was referring to, is service "Ambari Infra". This service runs a SolrCloud under the hood, and if you configure Ranger to store audits in SolrCloud it will by default pick up this SolrCloud instance.
To put it in a nutshell: you need service "Ambari Infra" if you do not want to setup/maintain a dedicated, additional SolrCloud environemnt.