@Aman Mundra There is not much details why Namenode is failing to start. Can you share the NameNode log when trying to start the namenode service? It will help to identify what is causing the NameNode to fail to start. Meanwhile you can try to test if namenode can be manually started from command line? Run following : /usr/hdp/current/hadoop-client/sbin/hadoop-daemon.sh --config /usr/hdp/current/hadoop-client/conf start namenode or /var/lib/ambari-agent/ambari-sudo.sh su hdfs -l -s /bin/bash -c 'ulimit -c unlimited ;/usr/hdp/current/hadoop-client/sbin/hadoop-daemon.sh --config /usr/hdp/current/hadoop-client/conf start namenode ... View more

My ambari version is Version2.2.2.0 and HDP version is HDP-2.3.4.0-3485 bash-4.2$ yum list 'smartsense*' Loaded plugins: product-id, search-disabled-repos, subscription-manager HDP-2.3 175/175 HDP-UTILS-1.1.0.20 44/44 puppetlabs-deps 12/12 puppetlabs-products 66/66 rhel-7-server-eus-rpms 8407/8407 rhel-7-server-optional-rpms 7122/7122 rhel-7-server-rpms 8450/8450 rhel-7-server-thirdparty-oracle-java-rpms 170/170 rhel-rs-for-rhel-7-server-eus-rpms 162/162 usps-addons 6/6 Error: No matching Packages to list bash-4.2$ cat /etc/yum.repos.d/ambari.repo cat /etc/yum.repos.d/ambari.repo cat: /etc/yum.repos.d/ambari.repo: No such file or directory ... View more

Thanks @Aman Mundra Glad it worked 🙂 , please accept the answer to close this thread. ... View more