1. 配置域名

Server1：

OS version: CentOS Linux release 8.5.2111

hostnamectl --static set-hostname mongo01

vi /etc/sysconfig/network

# Created by anaconda
hostname=mong01

echo "192.168.88.20 mong1 mongo01.com mongo02.com" >> /etc/hosts
echo "192.168.88.24 mong2 mongo03.com mongo04.com" >> /etc/hosts
echo "192.168.88.26 mong3 mongo05.com mongo06.com" >> /etc/hosts

Server2:

OS version: CentOS Linux release 8.5.2111

hostnamectl --static set-hostname mongo2

vi /etc/sysconfig/network

# Created by anaconda
hostname=mong2

echo "192.168.88.20 mong1 mongo01.com mongo02.com" >> /etc/hosts
echo "192.168.88.24 mong2 mongo03.com mongo04.com" >> /etc/hosts
echo "192.168.88.26 mong3 mongo05.com mongo06.com" >> /etc/hosts
 

Server3:

OS version: CentOS Linux release 8.5.2111

hostnamectl --static set-hostname mongo3

vi /etc/sysconfig/network

# Created by anaconda
hostname=mong3

echo "192.168.88.20 mong1 mongo01.com mongo02.com" >> /etc/hosts
echo "192.168.88.24 mong2 mongo03.com mongo04.com" >> /etc/hosts
echo "192.168.88.26 mong3 mongo05.com mongo06.com" >> /etc/hosts
 

2. 准备分片目录

在各服务器上创建数据目录，使用/data,也可以按特定需求指定目录
在mongo01.com,mongo03.com,mongo05.com上执行：
mkdir -p /data/shard1/db /data/shard1/log /data/config/db /data/config/log

在mongo02.com,mongo04.com,mongo06.com上执行：
mkdir -p /data/shard2/db /data/shard2/log /data/mongos

3. download mongo image

Download MongoDB Community Server | MongoDB