Hi, Ensure your network is unrstricted. Also follow Ambari guide for each and every steps. Below are the steps which we applied for our 4 node Ubuntu systems cluster : Ambari Cluster Environment setup commands before installation in all systems: 1. To install Ubuntu desktop packages :apt-get install ubuntu-desktop 2.Installing ssh apt-get install openssh-server ssh root@localhost sudo passwd cd /etc/ssh/sshd_config >> PermitRootLogin yes service ssh restart 3. Installing latest Jdk java -version apt-get install openjdk-7-jdk java -version mkdir /usr/jdk64 cd /home/hadoopuser/Downloads/ cp -r jdk-8u60-linux-x64.tar.gz /usr/jdk64/ cd /usr/jdk64/ tar -xzvf jdk-8u60-linux-x64.tar.gz javac -version update-alternatives --install "/usr/bin/java" "java" "/usr/jdk64/jdk1.8.0_60/bin/java" 1 update-alternatives --install "/usr/bin/javac" "javac" "/usr/jdk64/jdk1.8.0_60/bin/javac" 1 update-alternatives --config java update-alternatives --config javac java -version 4. To change hostname of system to FQDN: cat /etc/hostname nano /etc/hostname e.g hostname.domainname.com service hostname restart hostname hostname -f reboot 5. To generate SSH keys for passwordless authentication ssh-keygen -f "/root/.ssh/known_hosts" -R localhost ssh root@localhost cat /root/.ssh/known_hosts cat /tmp/id_rsa.pub>> .ssh/authorized_keys 6 To enable NTP Services sysv-rc-conf ntp on reboot nano /etc/ntp.conf server 0.in.pool.ntp.org server 1.in.pool.ntp.org server 2.in.pool.ntp.org server 3.in.pool.ntp.org install NTP from software centre service ntp restart 7. To disable Firewall apt-get install ufw cat /sys/kernel/mm/transparent_hugepage/enabled It should be : always madvise [never] else do following steps nano /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT="quiet splash transparent_hugepage=never" update-grub reboot 8. Remove SE-Linux apparmor_status /etc/init.d/apparmor stop update-rc.d -f apparmor remove 9.Ambari installation Log in to your host as root. Download the Ambari repository file to a directory on your installation host. wget -nv http://public-repo-1.hortonworks.com/ambari/ubuntu14/2.x/updates/2.2.1.0/ambari.list -O /etc/apt/sources.list.d/ambari.list apt-key adv --recv-keys --keyserver keyserver.ubuntu.com B9733A7A07513CAD apt-get update apt-cache showpkg ambari-server apt-cache showpkg ambari-agent apt-cache showpkg ambari-metrics-assembly apt-get install ambari-server ambari-server setup ambari-server start ambari-server status follow the remaining steps mentioned in the link mentioned below Link: https://docs.hortonworks.com/HDPDocuments/Ambari-2.2.1.0/bk_Installing_HDP_AMB/content/ch_Installing_Ambari.html 10.Using Hive with MySQL http://docs.hortonworks.com/HDPDocuments/Ambari-2.2.1.0/bk_ambari_reference_guide/content/_using_hive_with_mysql.html 11. Using Oozie with MySQL http://docs.hortonworks.com/HDPDocuments/Ambari-2.2.1.0/bk_ambari_reference_guide/content/_using_oozie_with_mysql.html Hope this is helpful. If any error persists after doing all these things better try for fresh installation after formatting all the systems. Regards Pritam ... View more