三台虚拟机硬盘都是12GB 内存不同CM1：8196MB CM2、CM3：2048MB
查看网络地址 ip addr
vi /etc/sysconfig/network-scripts/ifcfg-enp0s3
DEVICE=enp0s3 TYPE=Ethernet BOOTPROTO=static onBOOT=yes NM_ConTROLLED=yes IPADDR=192.168.50.167 PREFIX=24 NETMASK=255.255.255.0 GATEWAY=192.168.50.4 DNS1=192.168.50.1 DNS2=114.114.114.114
vi /etc/hostname
cm1
vi /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.50.167 cm1 192.168.50.168 cm2 192.168.50.169 cm3
查看防火墙 firewall-cmd --state
systemctl stop firewalld
systemctl disable firewalld
systemctl list-unit-files
关闭SELinux
vi /etc/selinux/config
SELINUX=disabled
更新yum(可不做)
yum clean all
yum makecache
免密登录
(每台)
yum -y install openssh-clients
cd ~
ssh localhost 输入yes 和 密码 最后exit
ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa
ssh-copy-id cm1 输入yes 和 密码
（仅cm1）
scp ./authorized_keys cm2:`pwd` 输入yes 和 密码
scp ./authorized_keys cm3:`pwd`
时钟同步
安装JDK8u181
rpm -ivh jdk-8u181-linux-x64.rpm
vi /etc/profile
export JAVA_HOME=/usr/java/jdk1.8.0.181-amd64 export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/toos.jar
source /etc/profile
java -version
安装mysql（仅cm1）
yum -y install wget
wget https://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm
rpm -ivh mysql57-community-release-el7-9.noarch.rpm
yum -y install mysql-server
systemctl start mysqld
systemctl status mysqld
vi /etc/my.cnf
【mysqld】增加 plugin-load=validate_password.so validate-password=OFF
systemctl restart mysqld
grep 'temporary password' /var/log/mysqld.log
mysql -uroot -p 输入临时密码
set password for 'root'@'localhost'=password('123456');
systemctl enable mysqld
systemctl daemon-reload
安装必要的附件（每台）
yum -y install chkconfig bind-utils psmisc cyrus-sasl-plain cyrus-sasl-gssapi portmap /lib/lsb/init-functions httpd mod_ssl openssl-devel python python-psycopg2 MySQL-python libxslt zlib sqlite fuse fuse-libs redhat-lsb
