1. 下载MongoDB。下载地址：https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-3.4.7.tgz
2. 解压，tar zxvf mongodb-linux-x86_64-rhel70-3.4.7.tgz
3. 新建Mongo文件夹，mkdir Mongodb
4. 将mongo复制到文件夹中， mv mongodb-linux-x86_64-rhel70-3.4.7/ ../Mongodb/mongo
5. 新建数据、日志、配置文件夹，mkdir conf data log
6. 进入data目录， cd data/
7. 新建节点的文件夹，mkdir 27017 27018 27019
8. 进入配置文件夹， cd conf/
9. 新建PRIMARY配置27017， vi 27017.conf
port=27017
bind_ip=10.11.17.171
logpath=/home/jiangyi/Mongodb/log/27017.log
dbpath=/home/jiangyi/Mongodb/data/27017/
logappend=true
pidfilepath=/home/jiangyi/Mongodb/data/27017/27017.pid
fork=true
oplogSize=1024
replSet=MyMongo
10. 新建SECONDARY配置27018，vi 27018.conf
port=27018
bind_ip=10.11.17.171
logpath=/home/jiangyi/Mongodb/log/27018.log
dbpath=/home/jiangyi/Mongodb/data/27018/
logappend=true
pidfilepath=/home/jiangyi/Mongodb/data/27018/27018.pid
fork=true
oplogSize=1024
replSet=MyMongo
11. 新建ARBITOR配置27019， vi 27019.conf
bind_ip=10.11.17.171
logpath=/home/jiangyi/Mongodb/log/27019.log
dbpath=/home/jiangyi/Mongodb/data/27019/
logappend=true
pidfilepath=/home/jiangyi/Mongodb/data/27019/27019.pid
fork=true
oplogSize=1024
replSet=MyMongo
12. 启动三个节点
cd /home/jiangyi/Mongodb/mongodb/bin
./mongod -f /home/jiangyi/Mongodb/conf/27017.conf
./mongod -f /home/jiangyi/Mongodb/conf/27018.conf
./mongod -f /home/jiangyi/Mongodb/conf/27019.conf
11. 登录主节点，./mongo 10.11.17.171:27017/admin,配置
db;
config = {
"_id":"MyMongo",
members:[
{"_id":0,host:"10.11.17.171:27017"},
{"_id":1,host:"10.11.17.171:27018"},
{"_id":2,host:"10.11.17.171:27019"}]
}
12. 将27019设置为仲裁节点
config.members[2] ={"_id":2,"host":"10.11.17.171:27019",arbiterOnly:true}
13. 初始化config
rs.initiate(config)
14. 查看状态
rs.status()
15. 切换到root用户，设置防火墙，ip屏蔽取消
firewall-cmd --permanent --add-port=27017/tcp
firewall-cmd --permanent --add-port=27018/tcp
firewall-cmd --permanent --add-port=27019/tcp
firewall-cmd --reload
systemctl restart firewalld.service