荐配置mongoDB复制集群集

程序员文章站 2022-06-24 23:09:38

配置mongoDB复制集群集配置环境27017主节点27018 标准节点27019被动节点27020 仲裁节点一、配置复制集1）在配置复制集的时候需要先将mongoDB原本的数据清空：进入mongoDB数据存储文件中删除数据：（注意所有的实例都需要清空）[root@kgc6 ~]# cd /var/lib/mongo[root@kgc6 mongo]# rm -rf ./*2）创建多个实例复制27017配置文件并改名：（需要几个实例就复制几个实例）[root@kgc6 ~]# cp...

配置mongoDB复制集群集

配置环境
27017主节点
27018 标准节点
27019被动节点
27020 仲裁节点

一、配置复制集

1）在配置复制集的时候需要先将mongoDB原本的数据清空：

进入mongoDB数据存储文件中删除数据：（注意所有的实例都需要清空）
[root@kgc6 ~]# cd /var/lib/mongo
[root@kgc6 mongo]# rm -rf ./*

2）创建多个实例复制27017配置文件并改名：（需要几个实例就复制几个实例）

[root@kgc6 ~]# cp /etc/mongod.conf  /etc/mongod1.conf //(所有的实例配置文件都要改)
修改配置文件中的内容：
 path: /var/log/mongodb/mongod1.log （改为你对应的复制的配置文件名称）
 dbPath: /var/lib/mongo1
pidFilePath: /var/run/mongodb/mongod1.pid
 port: 27018  //修改端口号
replication:
  oplogSizeMB: 2048(开启复制集，前面要格两个空格)
  replSetName: kgcrs （复制集的名称）

3）创建数据文件日志文件可以自动生成：（所有的实例都需要创建）

[root@kgc6 ~]# mkdir -p /var/lib/mongo1

荐
配置mongoDB复制集群集
4）启动mongoDB服务：

[root@kgc6 lib]# cd /usr/bin/
[root@kgc6 bin]# mongod -f /etc/mongod.conf （所有的实例都需要开）
查看端口号：
[root@kgc6 bin]# netstat -lnt
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State      
tcp        0      0 127.0.0.1:27017         0.0.0.0:*               LISTEN     
tcp        0      0 127.0.0.1:27018         0.0.0.0:*               LISTEN     
tcp        0      0 127.0.0.1:27019         0.0.0.0:*               LISTEN     

tcp        0      0 127.0.0.1:27020         0.0.0.0:*               LISTEN

5）初始化配置复制集：
[root@kgc6 bin]# mongo //登录默认的mongodb数据库

> show dbs //查看全部表
2020-07-08T17:57:23.652+0800 E QUERY    [thread1] Error: listDatabases failed:{
	"ok" : 0,
	"errmsg" : "not master and slaveOk=false",
	"code" : 13435,
	"codeName" : "NotMasterNoSlaveOk"
} :
_getErrorWithCode@src/mongo/shell/utils.js:25:13
Mongo.prototype.getDBs@src/mongo/shell/mongo.js:62:1
shellHelper.show@src/mongo/shell/utils.js:814:19
shellHelper@src/mongo/shell/utils.js:704:15
@(shellhelp2):1:1 //（这里报错是正常情况因为我们还没有配置复制集）
> rs.status() //（查看复制集）
{
	"info" : "run rs.initiate(...) if not yet done for the set",
	"ok" : 0,
	"errmsg" : "no replset config has been received",
	"code" : 94,
	"codeName" : "NotYetInitialized"

>config={"_id":"kgcrs","members":[{"_id":0,"host":"127.0.0.1:27017","priority":100},{"_id":1,"host":"127.0.0.1:27018","priority":100},{"_id":2,"host":"127.0.0.1:27019","priority":0},{"_id":3,"host":"127.0.0.1:27020","arbiterOnly":true}]} //初始化数据库并配置优先级
{
	"_id" : "kgcrs",
	"members" : [
		{
			"_id" : 0,
			"host" : "127.0.0.1:27017",
			"priority" : 100
		},
		{
			"_id" : 1,
			"host" : "127.0.0.1:27018",
			"priority" : 100
		},
		{
			"_id" : 2,
			"host" : "127.0.0.1:27019",
			"priority" : 0
		},
		{
			"_id" : 3,
			"host" : "127.0.0.1:27020",
			"arbiterOnly" : true
		}
	]
}
> rs.initiate(config) //初始化数据库
{ "ok" : 1 }

查看复制集状态：
> rs.status()
{
	"info" : "run rs.initiate(...) if not yet done for the set",
	"ok" : 0,
	"errmsg" : "no replset config has been received",
	"code" : 94,
	"codeName" : "NotYetInitialized"
}
> config={"_id":"kgcrs","members":[{"_id":0,"host":"127.0.0.1:27017","priority":100},{"_id":1,"host":"127.0.0.1:27018","priority":100},{"_id":2,"host":"127.0.0.1:27019","priority":0},{"_id":3,"host":"127.0.0.1:27020","arbiterOnly":true}]}
{
	"_id" : "kgcrs",
	"members" : [
		{
			"_id" : 0,
			"host" : "127.0.0.1:27017",
			"priority" : 100
		},
		{
			"_id" : 1,
			"host" : "127.0.0.1:27018",
			"priority" : 100
		},
		{
			"_id" : 2,
			"host" : "127.0.0.1:27019",
			"priority" : 0
		},
		{
			"_id" : 3,
			"host" : "127.0.0.1:27020",
			"arbiterOnly" : true
		}
	]
}
> rs.initiate(config)
{ "ok" : 1 }
kgcrs:SECONDARY> rs.status()
{
	"set" : "kgcrs",
	"date" : ISODate("2020-07-08T02:23:13.981Z"),
	"myState" : 1,
	"term" : NumberLong(1),
	"syncingTo" : "",
	"syncSourceHost" : "",
	"syncSourceId" : -1,
	"heartbeatIntervalMillis" : NumberLong(2000),
	"optimes" : {
		"lastCommittedOpTime" : {
			"ts" : Timestamp(1594174989, 1),
			"t" : NumberLong(1)
		},
		"appliedOpTime" : {
			"ts" : Timestamp(1594174989, 1),
			"t" : NumberLong(1)
		},
		"durableOpTime" : {
			"ts" : Timestamp(1594174989, 1),
			"t" : NumberLong(1)
		}
	},
	"members" : [
		{
			"_id" : 0,
			"name" : "127.0.0.1:27017",
			"health" : 1,
			"state" : 1,
			"stateStr" : "PRIMARY", //主节点
			"uptime" : 148,
			"optime" : {
				"ts" : Timestamp(1594174989, 1),
				"t" : NumberLong(1)
			},
			"optimeDate" : ISODate("2020-07-08T02:23:09Z"),
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "could not find member to sync from",
			"electionTime" : Timestamp(1594174918, 1),
			"electionDate" : ISODate("2020-07-08T02:21:58Z"),
			"configVersion" : 1,
			"self" : true,
			"lastHeartbeatMessage" : ""
		},
		{
			"_id" : 1,
			"name" : "127.0.0.1:27018",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY", //被节点
			"uptime" : 86,
			"optime" : {
				"ts" : Timestamp(1594174989, 1),
				"t" : NumberLong(1)
			},
			"optimeDurable" : {
				"ts" : Timestamp(1594174989, 1),
				"t" : NumberLong(1)
			},
			"optimeDate" : ISODate("2020-07-08T02:23:09Z"),
			"optimeDurableDate" : ISODate("2020-07-08T02:23:09Z"),
			"lastHeartbeat" : ISODate("2020-07-08T02:23:12.583Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T02:23:13.770Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "127.0.0.1:27017",
			"syncSourceHost" : "127.0.0.1:27017",
			"syncSourceId" : 0,
			"infoMessage" : "",
			"configVersion" : 1
		},
		{
			"_id" : 2,
			"name" : "127.0.0.1:27019",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY", //被节点
			"uptime" : 86,
			"optime" : {
				"ts" : Timestamp(1594174989, 1),
				"t" : NumberLong(1)
			},
			"optimeDurable" : {
				"ts" : Timestamp(1594174989, 1),
				"t" : NumberLong(1)
			},
			"optimeDate" : ISODate("2020-07-08T02:23:09Z"),
			"optimeDurableDate" : ISODate("2020-07-08T02:23:09Z"),
			"lastHeartbeat" : ISODate("2020-07-08T02:23:12.583Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T02:23:13.832Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "127.0.0.1:27017",
			"syncSourceHost" : "127.0.0.1:27017",
			"syncSourceId" : 0,
			"infoMessage" : "",
			"configVersion" : 1
		},
		{
			"_id" : 3,
			"name" : "127.0.0.1:27020",
			"health" : 1,
			"state" : 7,
			"stateStr" : "ARBITER", //仲裁节点
			"uptime" : 86,
			"lastHeartbeat" : ISODate("2020-07-08T02:23:12.583Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T02:23:09.455Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"configVersion" : 1
		}
	],
	"ok" : 1
}
kgcrs:PRIMARY>

6）增加和删除节点：

kgcrs:PRIMARY> rs.add("127.0.0.1:27021")
查看复制集节点：
kgcrs:PRIMARY> rs.status()
	{
			"_id" : 4,
			"name" : "127.0.0.1:27021",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY",
			"uptime" : 10,
			"optime" : {
				"ts" : Timestamp(1594175705, 1),
				"t" : NumberLong(1)
			},
			"optimeDurable" : {
				"ts" : Timestamp(1594175705, 1),
				"t" : NumberLong(1)
			},
			"optimeDate" : ISODate("2020-07-08T02:35:05Z"),
			"optimeDurableDate" : ISODate("2020-07-08T02:35:05Z"),
			"lastHeartbeat" : ISODate("2020-07-08T02:35:15.243Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T02:35:15.304Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"configVersion" : 2
		}
	],
	"ok" : 1
}

删除复制集节点：
kgcrs:PRIMARY> rs.remove("127.0.0.1:27021")
{ "ok" : 1 }
查看复制集节点：
		{
			"_id" : 3,
			"name" : "127.0.0.1:27020",
			"health" : 1,
			"state" : 7,
			"stateStr" : "ARBITER",
			"uptime" : 992,
			"lastHeartbeat" : ISODate("2020-07-08T02:38:18.900Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T02:38:19.919Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"configVersion" : 3
		}
	],
	"ok" : 1
}

7）模拟故障自动转移：

之前的主节点是127.0.0.1:27017
关闭主节点：
[root@kgc6 bin]# mongod -f /etc/mongod.conf --shoutdown

登录被节点查看：（可以看到主节点自动切换到优先级为100的27018被节点上）
[root@kgc6 bin]# mongo --port 27018
kgcrs:PRIMARY> rs.status()
{
	"set" : "kgcrs",
	"date" : ISODate("2020-07-08T02:42:49.356Z"),
	"myState" : 1,
	"term" : NumberLong(2),
	"syncingTo" : "",
	"syncSourceHost" : "",
	"syncSourceId" : -1,
	"heartbeatIntervalMillis" : NumberLong(2000),
	"optimes" : {
		"lastCommittedOpTime" : {
			"ts" : Timestamp(1594176089, 1),
			"t" : NumberLong(1)
		},
		"appliedOpTime" : {
			"ts" : Timestamp(1594176168, 1),
			"t" : NumberLong(2)
		},
		"durableOpTime" : {
			"ts" : Timestamp(1594176168, 1),
			"t" : NumberLong(2)
		}
	},
	"members" : [
		{
			"_id" : 0,
			"name" : "127.0.0.1:27017",
			"health" : 0,
			"state" : 8,
			"stateStr" : "(not reachable/healthy)",
			"uptime" : 0,
			"optime" : {
				"ts" : Timestamp(0, 0),
				"t" : NumberLong(-1)
			},
			"optimeDurable" : {
				"ts" : Timestamp(0, 0),
				"t" : NumberLong(-1)
			},
			"optimeDate" : ISODate("1970-01-01T00:00:00Z"),
			"optimeDurableDate" : ISODate("1970-01-01T00:00:00Z"),
			"lastHeartbeat" : ISODate("2020-07-08T02:42:48.899Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T02:41:37.412Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "Connection refused",
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"configVersion" : -1
		},
		{
			"_id" : 1,
			"name" : "127.0.0.1:27018",
			"health" : 1,
			"state" : 1,
			"stateStr" : "PRIMARY",
			"uptime" : 1321,
			"optime" : {
				"ts" : Timestamp(1594176168, 1),
				"t" : NumberLong(2)
			},
			"optimeDate" : ISODate("2020-07-08T02:42:48Z"),
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "could not find member to sync from",
			"electionTime" : Timestamp(1594176106, 1),
			"electionDate" : ISODate("2020-07-08T02:41:46Z"),
			"configVersion" : 3,
			"self" : true,
			"lastHeartbeatMessage" : ""
		},
		{
			"_id" : 2,
			"name" : "127.0.0.1:27019",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY",
			"uptime" : 1259,
			"optime" : {
				"ts" : Timestamp(1594176168, 1),
				"t" : NumberLong(2)
			},
			"optimeDurable" : {
				"ts" : Timestamp(1594176168, 1),
				"t" : NumberLong(2)
			},
			"optimeDate" : ISODate("2020-07-08T02:42:48Z"),
			"optimeDurableDate" : ISODate("2020-07-08T02:42:48Z"),
			"lastHeartbeat" : ISODate("2020-07-08T02:42:48.898Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T02:42:48.146Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "127.0.0.1:27018",
			"syncSourceHost" : "127.0.0.1:27018",
			"syncSourceId" : 1,
			"infoMessage" : "",
			"configVersion" : 3
		},
		{
			"_id" : 3,
			"name" : "127.0.0.1:27020",
			"health" : 1,
			"state" : 7,
			"stateStr" : "ARBITER",
			"uptime" : 1259,
			"lastHeartbeat" : ISODate("2020-07-08T02:42:48.898Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T02:42:45.207Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"configVersion" : 3
		}
	],
	"ok" : 1
}

8）手动进行主从切换：

启动27017端口：
[root@kgc6 bin]# mongod -f /etc/mongod.conf 

在27018主节点上配置：
kgcrs:PRIMARY> rs.stepDown(60,30) //交出主节点位置，维持被节点不少于60秒，同时等待30秒以使主节点和被节点日志同步：
kgcrs:SECONDARY>  //可以看到27018节点已经变成了从节点

查看复制节点状态：（可以看到27017节点从新变成主节点）
kgcrs:SECONDARY> rs.status()
{
	"set" : "kgcrs",
	"date" : ISODate("2020-07-08T02:53:42.484Z"),
	"myState" : 2,
	"term" : NumberLong(3),
	"syncingTo" : "127.0.0.1:27019",
	"syncSourceHost" : "127.0.0.1:27019",
	"syncSourceId" : 2,
	"heartbeatIntervalMillis" : NumberLong(2000),
	"optimes" : {
		"lastCommittedOpTime" : {
			"ts" : Timestamp(1594176816, 1),
			"t" : NumberLong(3)
		},
		"appliedOpTime" : {
			"ts" : Timestamp(1594176816, 1),
			"t" : NumberLong(3)
		},
		"durableOpTime" : {
			"ts" : Timestamp(1594176816, 1),
			"t" : NumberLong(3)
		}
	},
	"members" : [
		{
			"_id" : 0,
			"name" : "127.0.0.1:27017",
			"health" : 1,
			"state" : 1,
			"stateStr" : "PRIMARY",
			"uptime" : 410,
			"optime" : {
				"ts" : Timestamp(1594176816, 1),
				"t" : NumberLong(3)
			},
			"optimeDurable" : {
				"ts" : Timestamp(1594176816, 1),
				"t" : NumberLong(3)
			},
			"optimeDate" : ISODate("2020-07-08T02:53:36Z"),
			"optimeDurableDate" : ISODate("2020-07-08T02:53:36Z"),
			"lastHeartbeat" : ISODate("2020-07-08T02:53:41.078Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T02:53:41.648Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"electionTime" : Timestamp(1594176614, 1),
			"electionDate" : ISODate("2020-07-08T02:50:14Z"),
			"configVersion" : 3
		},
		{
			"_id" : 1,
			"name" : "127.0.0.1:27018",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY",
			"uptime" : 1974,
			"optime" : {
				"ts" : Timestamp(1594176816, 1),
				"t" : NumberLong(3)
			},
			"optimeDate" : ISODate("2020-07-08T02:53:36Z"),
			"syncingTo" : "127.0.0.1:27019",
			"syncSourceHost" : "127.0.0.1:27019",
			"syncSourceId" : 2,
			"infoMessage" : "",
			"configVersion" : 3,
			"self" : true,
			"lastHeartbeatMessage" : ""
		},
		{
			"_id" : 2,
			"name" : "127.0.0.1:27019",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY",
			"uptime" : 1913,
			"optime" : {
				"ts" : Timestamp(1594176816, 1),
				"t" : NumberLong(3)
			},
			"optimeDurable" : {
				"ts" : Timestamp(1594176816, 1),
				"t" : NumberLong(3)
			},
			"optimeDate" : ISODate("2020-07-08T02:53:36Z"),
			"optimeDurableDate" : ISODate("2020-07-08T02:53:36Z"),
			"lastHeartbeat" : ISODate("2020-07-08T02:53:41.117Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T02:53:42.117Z"),
			"pingMs" : NumberLong(3),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "127.0.0.1:27017",
			"syncSourceHost" : "127.0.0.1:27017",
			"syncSourceId" : 0,
			"infoMessage" : "",
			"configVersion" : 3
		},
		{
			"_id" : 3,
			"name" : "127.0.0.1:27020",
			"health" : 1,
			"state" : 7,
			"stateStr" : "ARBITER",
			"uptime" : 1913,
			"lastHeartbeat" : ISODate("2020-07-08T02:53:41.078Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T02:53:40.945Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"configVersion" : 3
		}
	],
	"ok" : 1
}

选举的原理：
节点类型分为标准（host）节点、被动（passive）节点和仲裁（arbiter）节点：
（1）只有标准节点可能被选举为活跃节点（主节点）有选举权，被动节点有完整副本，不可能成为活跃节点，有选举权，仲裁节点不复制数据，不可能成为活跃节点，只有选举权。
（2）标准节点与被动节点的区别：priority值高者是标准节点，低者是被动节点
（3）选举规则是票数高者获胜，priority是优先权为0-1000的值，相当于额外增加0-1000的票数，选举结果：票数高者获胜，诺票数相同，数据新者获胜。

二、配置带认证的复制集：

创建密钥文件：
[root@kgc6 lib]# vim /var/lib/testKeyFile.file

生成密钥文件：
openssl rand -base64 756  > /var/lib/testKeyFile.file

修改权限：
[root@kgc6 lib]# chmod 400 /var/lib/testKeyFile.file

为个个实例生成密钥文件：
[root@kgc6 lib]# cp /var/lib/testKeyFile.file /var/lib/testKeyFile1.file 
[root@kgc6 lib]# cp /var/lib/testKeyFile.file /var/lib/testKeyFile2.file 
[root@kgc6 lib]# cp /var/lib/testKeyFile.file /var/lib/testKeyFile3.file 


登录主节点添加权限用户：
[root@kgc6 bin]# mongo

添加root用户到admin组中成为超级管理员用户密码为：123
kgcrs:PRIMARY> db.createUser({user:"root",pwd:"123",roles:["root"]})

关闭各实例服务：
[root@kgc6 bin]# mongod -f /etc/mongod.conf --shutdown
killing process with pid: 4130
[root@kgc6 bin]# mongod -f /etc/mongod1.conf --shutdown
killing process with pid: 3624
[root@kgc6 bin]# mongod -f /etc/mongod2.conf --shutdown
killing process with pid: 3651
[root@kgc6 bin]# mongod -f /etc/mongod3.conf --shutdown
killing process with pid: 3678


修改各实例的配置文件加上用户认证和密钥文件位置：
[root@kgc6 bin]# vim /etc/mongod.conf 添加以下选项：
security:
  keyFile: /var/lib/testKeyFile.file  //这里是各个实例对应的密钥文件位置
  authorization: enabled

[root@kgc6 bin]# vim /etc/mongod1.conf 
security:
  keyFile: /var/lib/testKeyFile1.file 
  authorization: enabled

启动各实例服务：
[root@kgc6 bin]# mongod -f /etc/mongod.conf 
about to fork child process, waiting until server is ready for connections.
forked process: 4401
child process started successfully, parent exiting
[root@kgc6 bin]# mongod -f /etc/mongod1.conf 
about to fork child process, waiting until server is ready for connections.
forked process: 4475
child process started successfully, parent exiting
[root@kgc6 bin]# mongod -f /etc/mongod2.conf 
about to fork child process, waiting until server is ready for connections.
forked process: 4552
child process started successfully, parent exiting
[root@kgc6 bin]# mongod -f /etc/mongod3.conf 
about to fork child process, waiting until server is ready for connections.
forked process: 4632
child process started successfully, parent exiting



验证群集：登录主节点服务器：
[root@kgc6 bin]# mongo
MongoDB shell version v3.4.24
connecting to: mongodb://127.0.0.1:27017
MongoDB server version: 3.4.24
kgcrs:PRIMARY> show dbs（查看所有数据库）
2020-07-08T11:26:46.700+0800 E QUERY    [thread1] Error: listDatabases failed:{
	"ok" : 0,
	"errmsg" : "not authorized on admin to execute command { listDatabases: 1.0 }",
	"code" : 13,
	"codeName" : "Unauthorized"
} :
_getErrorWithCode@src/mongo/shell/utils.js:25:13
Mongo.prototype.getDBs@src/mongo/shell/mongo.js:62:1
shellHelper.show@src/mongo/shell/utils.js:814:19
shellHelper@src/mongo/shell/utils.js:704:15
@(shellhelp2):1:1
kgcrs:PRIMARY> rs.status() (查看复制集)
{
	"ok" : 0,
	"errmsg" : "not authorized on admin to execute command { replSetGetStatus: 1.0 }",
	"code" : 13,
	"codeName" : "Unauthorized"
}
进入到admin库使用root用户登录：
kgcrs:PRIMARY> use admin
switched to db admin
kgcrs:PRIMARY> db.auth("root","123")
1
kgcrs:PRIMARY> show dbs （再次查看所有数据库）
admin  0.000GB
local  0.000GB
kgcrs:PRIMARY> rs.status() (查看复制集)
{
	"set" : "kgcrs",
	"date" : ISODate("2020-07-08T03:31:03.906Z"),
	"myState" : 1,
	"term" : NumberLong(4),
	"syncingTo" : "",
	"syncSourceHost" : "",
	"syncSourceId" : -1,
	"heartbeatIntervalMillis" : NumberLong(2000),
	"optimes" : {
		"lastCommittedOpTime" : {
			"ts" : Timestamp(1594179053, 1),
			"t" : NumberLong(4)
		},
		"appliedOpTime" : {
			"ts" : Timestamp(1594179053, 1),
			"t" : NumberLong(4)
		},
		"durableOpTime" : {
			"ts" : Timestamp(1594179053, 1),
			"t" : NumberLong(4)
		}
	},
	"members" : [
		{
			"_id" : 0,
			"name" : "127.0.0.1:27017",
			"health" : 1,
			"state" : 1,
			"stateStr" : "PRIMARY",
			"uptime" : 322,
			"optime" : {
				"ts" : Timestamp(1594179053, 1),
				"t" : NumberLong(4)
			},
			"optimeDate" : ISODate("2020-07-08T03:30:53Z"),
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"electionTime" : Timestamp(1594178752, 1),
			"electionDate" : ISODate("2020-07-08T03:25:52Z"),
			"configVersion" : 3,
			"self" : true,
			"lastHeartbeatMessage" : ""
		},
		{
			"_id" : 1,
			"name" : "127.0.0.1:27018",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY",
			"uptime" : 317,
			"optime" : {
				"ts" : Timestamp(1594179053, 1),
				"t" : NumberLong(4)
			},
			"optimeDurable" : {
				"ts" : Timestamp(1594179053, 1),
				"t" : NumberLong(4)
			},
			"optimeDate" : ISODate("2020-07-08T03:30:53Z"),
			"optimeDurableDate" : ISODate("2020-07-08T03:30:53Z"),
			"lastHeartbeat" : ISODate("2020-07-08T03:31:03.653Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T03:31:03.840Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "127.0.0.1:27017",
			"syncSourceHost" : "127.0.0.1:27017",
			"syncSourceId" : 0,
			"infoMessage" : "",
			"configVersion" : 3
		},
		{
			"_id" : 2,
			"name" : "127.0.0.1:27019",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY",
			"uptime" : 312,
			"optime" : {
				"ts" : Timestamp(1594179053, 1),
				"t" : NumberLong(4)
			},
			"optimeDurable" : {
				"ts" : Timestamp(1594179053, 1),
				"t" : NumberLong(4)
			},
			"optimeDate" : ISODate("2020-07-08T03:30:53Z"),
			"optimeDurableDate" : ISODate("2020-07-08T03:30:53Z"),
			"lastHeartbeat" : ISODate("2020-07-08T03:31:03.653Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T03:31:02.668Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "127.0.0.1:27018",
			"syncSourceHost" : "127.0.0.1:27018",
			"syncSourceId" : 1,
			"infoMessage" : "",
			"configVersion" : 3
		},
		{
			"_id" : 3,
			"name" : "127.0.0.1:27020",
			"health" : 1,
			"state" : 7,
			"stateStr" : "ARBITER",
			"uptime" : 307,
			"lastHeartbeat" : ISODate("2020-07-08T03:31:03.653Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T03:31:00.092Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"configVersion" : 3
		}
	],
	"ok" : 1
}



登录从节点服务器：
[root@kgc6 bin]# mongo --port 27018
kgcrs:SECONDARY> use admin
kgcrs:SECONDARY> db.auth("root","123")
1
默认MongoDB复制集的从节点不能读取数据，可以使用rs.slaveOk()命令允许能够在从节点读取数据：
kgcrs:SECONDARY> rs.slaveOk()
kgcrs:SECONDARY> show dbs
admin  0.000GB
local  0.000GB
kgcrs:SECONDARY> rs.status()
{
	"set" : "kgcrs",
	"date" : ISODate("2020-07-08T03:44:43.345Z"),
	"myState" : 2,
	"term" : NumberLong(4),
	"syncingTo" : "127.0.0.1:27019",
	"syncSourceHost" : "127.0.0.1:27019",
	"syncSourceId" : 2,
	"heartbeatIntervalMillis" : NumberLong(2000),
	"optimes" : {
		"lastCommittedOpTime" : {
			"ts" : Timestamp(1594179874, 1),
			"t" : NumberLong(4)
		},
		"appliedOpTime" : {
			"ts" : Timestamp(1594179874, 1),
			"t" : NumberLong(4)
		},
		"durableOpTime" : {
			"ts" : Timestamp(1594179874, 1),
			"t" : NumberLong(4)
		}
	},
	"members" : [
		{
			"_id" : 0,
			"name" : "127.0.0.1:27017",
			"health" : 1,
			"state" : 1,
			"stateStr" : "PRIMARY",
			"uptime" : 207,
			"optime" : {
				"ts" : Timestamp(1594179874, 1),
				"t" : NumberLong(4)
			},
			"optimeDurable" : {
				"ts" : Timestamp(1594179874, 1),
				"t" : NumberLong(4)
			},
			"optimeDate" : ISODate("2020-07-08T03:44:34Z"),
			"optimeDurableDate" : ISODate("2020-07-08T03:44:34Z"),
			"lastHeartbeat" : ISODate("2020-07-08T03:44:43.037Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T03:44:42.458Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"electionTime" : Timestamp(1594178752, 1),
			"electionDate" : ISODate("2020-07-08T03:25:52Z"),
			"configVersion" : 3
		},
		{
			"_id" : 1,
			"name" : "127.0.0.1:27018",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY",
			"uptime" : 208,
			"optime" : {
				"ts" : Timestamp(1594179874, 1),
				"t" : NumberLong(4)
			},
			"optimeDate" : ISODate("2020-07-08T03:44:34Z"),
			"syncingTo" : "127.0.0.1:27019",
			"syncSourceHost" : "127.0.0.1:27019",
			"syncSourceId" : 2,
			"infoMessage" : "",
			"configVersion" : 3,
			"self" : true,
			"lastHeartbeatMessage" : ""
		},
		{
			"_id" : 2,
			"name" : "127.0.0.1:27019",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY",
			"uptime" : 207,
			"optime" : {
				"ts" : Timestamp(1594179874, 1),
				"t" : NumberLong(4)
			},
			"optimeDurable" : {
				"ts" : Timestamp(1594179874, 1),
				"t" : NumberLong(4)
			},
			"optimeDate" : ISODate("2020-07-08T03:44:34Z"),
			"optimeDurableDate" : ISODate("2020-07-08T03:44:34Z"),
			"lastHeartbeat" : ISODate("2020-07-08T03:44:43.037Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T03:44:42.381Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "127.0.0.1:27017",
			"syncSourceHost" : "127.0.0.1:27017",
			"syncSourceId" : 0,
			"infoMessage" : "",
			"configVersion" : 3
		},
		{
			"_id" : 3,
			"name" : "127.0.0.1:27020",
			"health" : 1,
			"state" : 7,
			"stateStr" : "ARBITER",
			"uptime" : 207,
			"lastHeartbeat" : ISODate("2020-07-08T03:44:43.037Z"),
			"lastHeartbeatRecv" : ISODate("2020-07-08T03:44:41.023Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"configVersion" : 3
		}
	],
	"ok" : 1
}

本文地址：https://blog.****.net/weixin_45947267/article/details/107314716

上一篇：陈家春：我国应加强对HTML5、大数据等技术趋势预判能力

下一篇： ASP.NET Core与NLog集成的完整步骤

荐配置mongoDB复制集群集

配置mongoDB复制集群集

MongoDB安装、主从、复制集博客分类： MongoDB MongoDB安装主从复制集

mongodb副本集的搭建博客分类： mongodb学习 mongodb复制集mongodb复制集

搭建MongoDB主从复制(Master-Slave)集

MongoDB从入门到提高【第一集】---------MongdoDB配置参数说明及示例

【MongoDB】windows平台搭建Mongo数据库复制集（类似集群）

MongoDB运行时添加分片复制集

MongoDB复制集（ReplicationSets）简介

MongoDB复制集迁移到TokuMX方案

MySQL Cluster 与 MongoDB 复制群集分片设计及原理

配置mongodb复制集时遇见的坑

荐 配置mongoDB复制集群集

配置mongoDB复制集群集

MongoDB安装、主从、复制集 博客分类： MongoDB MongoDB安装主从复制集

mongodb副本集的搭建 博客分类： mongodb学习 mongodb复制集mongodb复制集

搭建MongoDB主从复制(Master-Slave)集

MongoDB从入门到提高【第一集】---------MongdoDB配置参数说明及示例

【MongoDB】windows平台搭建Mongo数据库复制集（类似集群）

MongoDB运行时添加分片复制集

MongoDB复制集（ReplicationSets）简介

MongoDB复制集迁移到TokuMX方案

MySQL Cluster 与 MongoDB 复制群集分片设计及原理

配置mongodb复制集时遇见的坑

荐配置mongoDB复制集群集

MongoDB安装、主从、复制集博客分类： MongoDB MongoDB安装主从复制集

mongodb副本集的搭建博客分类： mongodb学习 mongodb复制集mongodb复制集