安装之前检查

• 检查系统是多少位主机，以便于添加对应的yum源
• 确保 SELINUX 是disable状态

## 检查系统
root@VM_0_9_centos $ uname -a
Linux VM_0_9_centos 3.10.0-693.17.1.el7.x86_64 #1 SMP Thu Jan 25 20:13:58 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

## 禁止 selinux
root@VM_0_9_centos $ cat /etc/selinux/config |grep -v '#' |grep -i selinux
SELINUX=disabled
SELINUXTYPE=targeted 

## 如果没有则需要修改配置，并且重启
sed -i '/SELINUX/s/enforcing/disabled/' /etc/selinux/config

---

添加yum源

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

[mongodb-org-4.0]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/7/mongodb-org/4.0/x86_64/
gpgcheck=0 #*** 这里可以修改 gpgcheck=0, 省去gpg验证 ***
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-4.0.asc

---

安装mongodb

yum update
yum -y install mongodb-org mongodb-org-server

---

配置，启动和使用 mongodb

配置：

mkdir /data/logs
mkdir /data/db
vim /etc/mongod.conf

# mongod.conf

# for documentation of all options, see:
#   http://docs.mongodb.org/manual/reference/configuration-options/

# where to write logging data.
systemLog:
  destination: file
  logAppend: true
  path: /data/logs

# Where and how to store data.
storage:
  dbPath: /data/db
  journal:
    enabled: true
#  engine:
#  mmapv1:
#  wiredTiger:

# how the process runs
processManagement:
  fork: true  # fork and run in background
  pidFilePath: /var/run/mongodb/mongod.pid  # location of pidfile
  timeZoneInfo: /usr/share/zoneinfo

# network interfaces
net:
  port: 27017
  bindIp: 0.0.0.0  # Enter 0.0.0.0,:: to bind to all IPv4 and IPv6 addresses or, alternatively, use the net.bindIpAll setting.


#security:

#operationProfiling:

#replication:

#sharding:

## Enterprise-Only Options

#auditLog:

#snmp:

启动和停止：

mongod --auth -f /etc/mongod.conf   #启动mongod服务（--auth 开启密码验证，设置好用户密码再添加）

mongo  #启动mongo shell

# 先创建admin用户，再创建对应db的用户
> use dbname
> db.auth('username','pwd')

mongod --shutdown #关闭mongod服务