Cloudera Manager (CM) Installation

Before installing Cloudera Manager make sure the pre-requisite is met then proceed with installation . 

pre-requite for Cloudera Manager installation

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# Confirm that Java version is 1.8.x_xxx
java -version
# Confirm that JAVA_HOME is /usr/java/default
echo $JAVA_HOME
# Confirm that the PATH variable includes /usr/java/default/
echo $PATH
# Confirm Python 2.7 is installed
rpm -q python-2.7*
# mysqld.service service should be active (running)
systemctl status mysqld
# Confirm SELinux status is disabled
sestatus
# Notice the IPv4 address for eth0, confirm there is no IPv6 address
ip addr show
# Confirm firewalld.service is disabled
systemctl list-unit-files | grep firewalld
# HugePages_Total should be 0
cat /proc/meminfo | grep -i hugepages_total
# Confirm vm.swappiness is between 1 and 10
cat /proc/sys/vm/swappiness
# Confirm that the chronyd.service service is active
systemctl status chronyd
# Confirm that mysql-connector-java.jar is present based on the type of db use
ls -l /usr/share/java/mysql*

Create requird DB Schemas with help of DB Ex.scm for CM

Installation of Cloudera Manager and agents

Download the required cloudera manager server agent and demons .
on Cloudera manager install
yum localinstall cloudera-manager-daemons-xxxpxxx.rpm cloudera-manager-server-xxxpxxx.rpm cloudera-manager-agent-xxxpxxx.rpm
on the remaining nodes
yum localinstall cloudera-manager-daemons-xxxpxxx.rpm cloudera-manager-agent-xxxpxxx.rpm

start cloudera manager server --> systemctl start cloudera-scm-server
verify staus --> systemctl status cloudera-scm-server
restart CM --> systemctl restart cloudera-scm-server

start cloudera manager agent--> systemctl start cloudera-scm-agent
verify staus --> systemctl status cloudera-scm-agent
restart agent--> systemctl restart cloudera-scm-agent

Creating Default tables and Seeding Data in CM
/opt/cloudera/scm/schema/scm_prepare_database.sh mysql -h dbhost -P
run above by replacing the values . It should be able to connect DB successfully

Now start Cloudera Manager

verify logs /var/log/cloudera-scm-server/cloudera-scm-server.log
Login to CM URL : http://CMHOST:7080/
default userid and password is admin/admin .you can change password later

Now CM installed successfully and login to Create cluster ...once done login looks like below with all the components that we maintain .

CM -Admin console