what is the command for checking indexer cluster status and search head cluster status as non root user?
Hope you mean by "non-root" as non-admin user?
For Indexer cluster, you need to run on the Cluster Master via CLI
$SPLUNK_HOME/bin/splunk show cluster-bundle-status
For SH Cluster, you need to run on Search Head member via CLI
$SPLUNK_HOME/bin/splunk show shcluster-status