After the HDP installation 2.4, I had issue with similar error as Unauthorized connection for super-user: oozie from IP.. As suggested above i made changes on proxyuser.oozie.hosts & group to *. Additionally I had to copy shared library file to HDFS. cd /tmp tar xvf <HDP_install_dir>/oozie/oozie-sharelib.tar.gz sudo -u oozie hadoop fs -put share /user/oozie/share Now you can start Oozie from Ambari. ========================= Another trouble shooting check is to find whether the DB is perfectly configured as per DB name,user & password specified in /etc/oozie/conf/oozie-site.xml sudo -u oozie /usr/lib/oozie/bin/ooziedb.sh create -run If it is perfectly configured it states that DB is configured. In my installation I had to grant DB privileges to oozie user.. ... View more

Sorry I have to mention, I used the local repository for HDF installation as the servers has no internet access. Having said that I was successful to install HDP using local repository. ... View more

As an alternative I removed sub domain of URL and used only hostname http://<servername>/HDPUTILS/repos/centos7/ but still fails with the same error. ... View more

Thanks Sharma for your response. Here is the link http://<servername>.<domain>.<name>.gov/HDPUTILS/repos/centos7/. I verified there is no space at the end or beginning of URL. ... View more