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解压，配置etc，mongoldb.conf文件

storage:
  journal:
    enabled: true
  dbPath: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/data/db/"
systemLog:
  destination: file
  path: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/log/mongod.log"
  logAppend: true
net:
  bindIp: "0.0.0.0"
  port: 27017

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测试环境

启动：./bin/mongod -f ./etc/mongod.conf 
客户端连接：./bin/mongo
退出关闭进程：ps -ef|grep mongod 
一切就绪即可进行下一步

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配置文件

主：
storage:
  journal:
    enabled: true
  dbPath: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/data/db/"
systemLog:
  destination: file
  path: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/log/mongod.log"
  logAppend: true
net:
  bindIp: "0.0.0.0"
  port: 27017
replication:
  replSetName: "lu"

从1：
storage:
  journal:
    enabled: true
  dbPath: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/data/db_s1/"
systemLog:
  destination: file
  path: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/log/s1.log"
  logAppend: true
net:
  bindIp: "0.0.0.0"
  port: 27018
replication:
  replSetName: "lu"

从2：
storage:
  journal:
    enabled: true
  dbPath: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/data/db_s2/"
systemLog:
  destination: file
  path: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/log/s2.log"
  logAppend: true
net:
  bindIp: "0.0.0.0"
  port: 27019
replication:
  replSetName: "lu"

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启动

./bin/mongod -f ./etc/mongod.conf 
./bin/mongod -f ./etc/s1.conf 
./bin/mongod -f ./etc/s2.conf 

客户端连接集群：
./bin/mongo

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分片集群认证设置

在其中一台机器上生成keyfile

cd /mongodb文件夹啊
在当前目录下生成文件：openssl rand -base64 753  > keyfile
sudo chmod 400 keyfile

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创建管理员账号

use admin
db.createUser({user: "root",pwd: "Showlu18",roles: [ { role: "root", db: "admin" } ]})
db.auth("root", "Showlu18")

use config
db.createUser({user: "root",pwd: "Showlu18",roles: [ { role: "root", db: "admin" } ]})
db.auth("root", "Showlu18")

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成功之后，关闭服务，修改配置文件

主：
storage:
  journal:
    enabled: true
  dbPath: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/data/db/"
systemLog:
  destination: file
  path: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/log/mongod.log"
  logAppend: true
net:
  bindIp: "0.0.0.0"
  port: 27017
replication:
  replSetName: "lu" #需要监控的数据库
security:
  authorization: enabled	#开启监控
  keyFile: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/keyfile"

从1：
storage:
  journal:
    enabled: true
  dbPath: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/data/db_s1/"
systemLog:
  destination: file
  path: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/log/s1.log"
  logAppend: true
net:
  bindIp: "0.0.0.0"
  port: 27018
replication:
  replSetName: "lu"
security:
  authorization: enabled
  keyFile: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/keyfile"

从2：
storage:
  journal:
    enabled: true
  dbPath: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/data/db_s2/"
systemLog:
  destination: file
  path: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/log/s2.log"
  logAppend: true
net:
  bindIp: "0.0.0.0"
  port: 27019
replication:
  replSetName: "lu"
security:
  authorization: enabled
  keyFile: "/Users/zhanglu/Desktop/lu/tool/dev/mongodb/mongodb-macos-x86_64-4.4.3/keyfile"

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重启集群

./bin/mongod -f ./etc/mongod.conf 
./bin/mongod -f ./etc/s1.conf 
./bin/mongod -f ./etc/s2.conf

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连接集群

客户端连接：mongo --host 127.0.0.1 --port 27017 -u "root" -p'Showlu18' --authenticationDatabase "admin"
客户端连接：
	mongo --host 127.0.0.1  
	use admin  
	db.auth("root", "111111")

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连接完毕，可以试试命令，是否需要认证，不需要说明成功连接
```
例如以下命令：
show users
show dbs
```
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配置集群

步骤一：
use lu

步骤二：
cfg={_id:"lu",members:[{_id:0,host:'127.0.0.1:27017',priority:2},{_id:1,host:'127.0.0.1:27018',priority:1},{_id:2,host:'127.0.0.1:27019',arbiterOnly:true}]}

步骤三：
rs.initiate(cfg)

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测试

一个客户端开启监视器：db.watch([],{maxAwaitTimeMS:60000})
一个客户端对选择的database进行操作，观察日志输出
db.col.insert({"name":"测试01"})
db.col.update({"name":"测试01"},{$set:{"name": "测试02"}})
db.col.remove({"name" : "测试02"})

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