InstallCDH5.11onCentOS7
##1)Environment initialization
Note：At least three nodes,
the Master node at least 6G of memory,
and the other two at least 4G of memory
|--------------|-----------|-------------|----------------|-----------|--------------------|-------------|
| Host | Server | Agent | zookeeper | namenode | secondarynamenode | datanode |
|--------------|-----------|-------------|----------------|-----------|--------------------|-------------|
|cdh01 Master | Y | Y | Y | Y | | |
|--------------|-----------|-------------|----------------|-----------|--------------------|-------------|
|cdh02 slave | | Y | Y | | Y | Y |
|--------------|-----------|-------------|----------------|-----------|--------------------|-------------|
|cdh03 slave | | Y | Y | | | Y |
|--------------|-----------|-------------|----------------|-----------|--------------------|-------------|
|cdh04 slave | | Y | Y | | | Y |
|--------------|-----------|-------------|----------------|-----------|--------------------|-------------|
|cdh05 slave | | Y | Y | | | Y |
|______________|___________|_____________|________________|___________|____________________|_____________|
#######################################
##Name resolution on every nodes
########################
cat > /etc/hosts <>/etc/sysctl.conf
echo 'net.ipv6.conf.default.disable_ipv6 = 1' >>/etc/sysctl.conf
echo 'vm.swappiness = 0' >>/etc/sysctl.conf
sysctl -p
echo never > /sys/kernel/mm/transparent_hugepage/defrag
echo 'echo never > /sys/kernel/mm/transparent_hugepage/defrag' >> /etc/rc.local
chmod +x /etc/rc.d/rc.local
groupadd hadoop -g 700
useradd hadoop -g hadoop -u 700
echo "hadoop123"|passwd --stdin hadoop
echo 'hadoop ALL=(ALL) NOPASSWD: ALL' >>/etc/sudoers
echo "ulimit -SHn 204800" >> /etc/rc.local
echo "ulimit -SHu 204800" >> /etc/rc.local
cat >> /etc/security/limits.conf << EOF
* soft nofile 204800
* hard nofile 204800
* soft nproc 204800
* hard nproc 204800
EOF
#Install jdk on every nodes
wget http://god.nongdingbang.net/downloads/auto_jdk_1.8.sh
sh auto_jdk_1.8.sh
#Install java-jdbc on every nodes
cd /home/tools
wget http://dev.MySQL.com/get/Downloads/Connector-J/mysql-connector-java-5.1.39.tar.gz
tar zxvf mysql-connector-java-5.1.39.tar.gz
mkdir /usr/share/java/
\cp mysql-connector-java-5.1.39/mysql-connector-java-5.1.39-bin.jar /usr/share/java/mysql-connector-java.jar
########################################################################################################
##2)Deploy local yum for CDH on cdh01
yum -y install epel-release
yum -y install nginx createrepo
cat > /etc/nginx/nginx.conf < /etc/nginx/conf.d/default.conf </etc/yum.repos.d/cloudera-cm.repo </etc/my.cnf</etc/cloudera-scm-server/db.properties </etc/cloudera-scm-agent/config.ini<
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