centos7.6 安装与配置 MongoDB yum方式

vim /etc/yum.repos.d/mongodb-org-4.0.repo

[mongodb-org-4.0]  
name=MongoDB Repository  
baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/4.0/x86_64/  
gpgcheck=1
enabled=1  
gpgkey=https://www.mongodb.org/static/pgp/server-4.0.asc

[root@MongoDB ~]# yum install -y mongodb-org

[root@MongoDB ~]# cat /etc/mongod.conf 

systemLog:
  destination: file
  logAppend: true
  path: /var/log/mongodb/mongod.log    // 日志存放目录
storage:
  dbPath: /var/lib/mongo  // 数据存放目录
  journal:
    enabled: true
processManagement:
  fork: true
  pidFilePath: /var/run/mongodb/mongod.pid    // pid文件路径
net:
  port: 27017          // 监听端口，默认是27017
  bindIp: 127.0.0.1    // 定义可以远程连接MongoDB的IP地址

$ vim /etc/mongod.conf 

# Listen to all ip address 
bind_ip = 0.0.0.0

[root@MongoDB ~]# systemctl start mongod

[root@MongoDB ~]#  mongo --host 127.0.0.1 --port 27017

[root@MongoDB ~]# mongo 

systemctl start mongod.service　　
systemctl stop  mongod.service　　
systemctl restart mongod.service

service mongod start
service mongod stop　　
service mongod restart

chkconfig mongod on（CentOS6）  
systemctl enbale mongod.service (CentOS7)