一  生产环境集群模式部署，需要多台主机，主机之间通过密钥相互访问.

1 配置如图

节点名字	节点IP	系统版本
master11	192.168.50.11	centos 8.5
slave12	192.168.50.12	centos 8.5
slave13	192.168.50.13	centos 8.5

2 安装服务器

#先安装一台master11，具体可以参考

VMware Workstation 虚拟机安装

#安装jdk

tar zxvf  jdk-8u191-linux-x64.tar.gz
mv jdk1.8.0_191/ /usr/local/jdk

vim  /etc/profile
export JAVA_HOME=/usr/local/jdk
export PATH=$JAVA_HOME/bin:$PATH
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export CLASSPATH
source  /etc/profile
#查看版本
[root@localhost soft]# java -version
java version "1.8.0_191"
Java(TM) SE Runtime Environment (build 1.8.0_191-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.191-b12, mixed mode)

#关闭master11

3克隆虚拟机

#通过master11,克隆出slave12,slave13

#同样方式克隆slave13

#修改IP地址

启动slave2

vim /etc/sysconfig/network-scripts/ifcfg-ens160
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME=ens160
DEVICE=ens160
ONBOOT=yes
IPADDR=192.168.50.12
PREFIX=24
GATEWAY=192.168.50.1
DNS1=192.168.50.1
IPV6_PRIVACY=no
#重新启动
reboot

 启动slave3

vim /etc/sysconfig/network-scripts/ifcfg-ens160
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME=ens160
DEVICE=ens160
ONBOOT=yes
IPADDR=192.168.50.13
PREFIX=24
GATEWAY=192.168.50.1
DNS1=192.168.50.1
IPV6_PRIVACY=no
#重新启动
reboot

4 配置服务器名称和hosts

#master11

hostnamectl  set-hostname master11
vim /etc/hosts
192.168.50.11 master11
192.168.50.12 slave12
192.168.50.13 slave13
#关闭防火墙
systemctl stop firewalld.service
systemctl disable firewalld.service

#slave12

hostnamectl  set-hostname slave12
vim /etc/hosts
192.168.50.11 master11
192.168.50.12 slave12
192.168.50.13 slave13
#关闭防火墙
systemctl stop firewalld.service
systemctl disable firewalld.service

#slave13

hostnamectl  set-hostname slave13
vim /etc/hosts
192.168.50.11 master11
192.168.50.12 slave12
192.168.50.13 slave13
#关闭防火墙
systemctl stop firewalld.service
systemctl disable firewalld.service

5配置ssh免密码登录

#master11

#直接回车确认
ssh-keygen  -t rsa
#拷贝密钥
ssh-copy-id master11
ssh-copy-id slave12
ssh-copy-id slave13

 # 测试一下

基础运行环境已完成，下一篇

正式部署