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## 安装$MongoDb$
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```shell
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cd /usr/local
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rz -be 选择：mongodb-linux-x86_64-rhel80-4.2.24.tgz
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tar zxvf mongodb-linux-x86_64-rhel80-4.2.24.tgz -C /usr/local/
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mv mongodb-linux-x86_64-rhel80-4.2.24 mongodb
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rm -rf mongodb-linux-x86_64-rhel80-4.2.24.tgz
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#添加环境变量
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vi /etc/profile
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export PATH=/usr/local/mongodb/bin:$PATH
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#生效
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source /etc/profile
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cd /usr/local/mongodb
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mkdir db
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mkdir log
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#设置文件夹权限
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cd /usr/local/mongodb
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chmod 777 db
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chmod 777 log
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# 上传配置文件
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rz -be
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```
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##### $mongodb.conf$
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```shell
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# 数据库目录
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dbpath = /usr/local/mongodb/db
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# 绑定IP
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bind_ip = 0.0.0.0
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# 端口
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port = 27017
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# 日志文件
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logpath = /usr/local/mongodb/log/mongod.log
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# 日志追加方式
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logappend = true
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# write操作首先写入“日记”，是一个数据安全的设置
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journal = true
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# 后台运行
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fork = true
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# 是否以安全认证方式运行，默认是不认证的非安全方式
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noauth = true
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# auth = true
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# 是不是每个数据库一个目录
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directoryperdb = true
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# 最大连接数
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maxConns = 10000
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```
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#### 启动$MongoDB$
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```shell
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/usr/local/mongodb/bin/mongod -f /usr/local/mongodb/mongodb.conf
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```
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#### 关闭$MongdoDB$
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```
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# 关闭数据库
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/usr/local/mongodb/bin/mongod --shutdown --dbpath /usr/local/mongodb/db
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```
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#### 分配管理员密码
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```
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mongo
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use admin
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#创建管理员账号
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db.createUser({ user: "admin", pwd: "DsideaL147258369", roles: [ { role: "userAdminAnyDatabase", db: "admin" } ] })
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# 关闭不用登录的实例，然后重新启动一次
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# noauth = true
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auth = true
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# 重启 MongoDB 服务
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mongo
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db.updateUser('root',{pwd:'DsideaL147258369',roles:[{role:'root',db:'admin'}]})
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db.updateUser('root',{pwd:'DsideaL147258369',roles:[{role:'root',db:'ycharge'}]})
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```
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# MongoDB4.28开启权限认证配置用户密码登录功能
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> https://www.jb51.net/article/234416.htm
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# 常用命令
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```
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yum install net-tools -y
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netstat -lanp | grep "27017"
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mongo #进入MongoDB控制台
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show dbs #查看默认数据库
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use admin #切换到admin数据库
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exit #退出MongoDB控制台
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```
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```
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[root@hadoop-master bin]# mongo
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use admin
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#db.dropUser("root")
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#db.dropUser("admin")
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db.createUser({user:"root",pwd:"DsideaL147258369",roles:["root"]})
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show users
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use yltcharge
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db.createUser({user:"yltcharge",pwd:"yltcharge",roles:[{role:"readWrite",db:"yltcharge"}]})
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#认证模式(true代表开启认证登录，false代表未开启认证登录)
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auth=true
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重启动
|
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/usr/local/mongodb/bin/mongod -f /usr/local/mongodb/mongodb.conf
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use admin
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db.auth("root","DsideaL147258369")
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use yltcharge
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db.auth("yltcharge","yltcharge");
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```
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