需求:因为端口调整，需要改变副本的备份集

1.查看当前的副本集信息

[root@localhost bin]# ./mongo 192.168.1.134:10001

repltest:PRIMARY> use admin

repltest:PRIMARY> db.auth("sa","123456")

repltest:PRIMARY> rs.config()

{

        "_id" : "repltest",

        "version" : 1,

        "members" : [

                {

                        "_id" : 0,

                        "host" : "192.168.1.134:10001",

                        "arbiterOnly" : false,

                        "buildIndexes" : true,

                        "hidden" : false,

                        "priority" : 1,

                        "tags" : {

                        },

                        "slaveDelay" : 0,

                        "votes" : 1

                },

                {

                        "_id" : 1,

                        "host" : "192.168.1.135:10002",

                        "arbiterOnly" : false,

                        "buildIndexes" : true,

                        "hidden" : false,

                        "priority" : 1,

                        "tags" : {

                        },

                        "slaveDelay" : 0,

                        "votes" : 1

                },

                {

                        "_id" : 2,

                        "host" : "192.168.1.135:10003",

                        "arbiterOnly" : true,

                        "buildIndexes" : true,

                        "hidden" : false,

                        "priority" : 1,

                        "tags" : {

                        },

                        "slaveDelay" : 0,

                        "votes" : 1

                }

        ],

        "settings" : {

                "chainingAllowed" : true,

                "heartbeatTimeoutSecs" : 10,

                "getLastErrorModes" : {

                },

                "getLastErrorDefaults" : {

                        "w" : 1,

                        "wtimeout" : 0

                }

        }

}

我们需要将这里各机器的端口10001,10002,10003分别修改为20001,20002,20003

2.修改从库192.168.1.135:10002为192.168.1.135:20002
2.1 停掉该从库
[root@localhost bin]# ./mongo localhost:10002
repltest:SECONDARY> use admin
repltest:SECONDARY> db.auth("sa","123456")
repltest:SECONDARY> db.shutdownServer()

2.2修改配置文件(mongo.cnf)将端口10002修改为20002
port = 20002

2.3启动该重库
[root@localhost bin]# ./mongod -f /opt/mongodb3015_slave/conf/mongo.cnf

2.4登陆主库执行如下命令
repltest:PRIMARY> rs.remove("192.168.1.135:10002") ##移除原配置文件中的已经变更地址的主机
repltest:PRIMARY> rs.add("192.168.1.135:20002") ##添加变更后的端口

2.5查看配置是否生效
rs.config()
rs.status()

3.修改仲裁节点的端口
3.1停掉仲裁节点
[root@localhost bin]# ./mongo localhost:10003
MongoDB shell version: 3.0.15
connecting to: localhost:10003/test
repltest:ARBITER> use admin
switched to db admin
repltest:ARBITER> db.auth("sa","123456")
Error: 18 Authentication failed.
0
repltest:ARBITER> db.shutdownServer()

3.2修改配置文件(mongo.cnf)将端口10003修改为20003
port = 20002

3.3启动该重库
[root@localhost bin]# ./mongod -f /opt/mongodb3015_arbiter/conf/mongo.cnf

3.4登陆主库执行如下命令
repltest:PRIMARY> rs.remove("192.168.1.135:10003") ##移除原配置文件中的已经变更地址的主机
repltest:PRIMARY> rs.addArb("192.168.1.135:20003") ##添加仲裁节点

3.5查看配置是否生效
rs.config()
rs.status()

4.修改主库192.168.1.134:10001为192.168.1.134:10002
4.1 停掉该主库
[root@localhost bin]# ./mongo localhost:10001
repltest:PRIMARY> use admin
repltest:PRIMARY> db.auth("sa","123456")
repltest:PRIMARY> db.shutdownServer()
这个时候该另外一个从库会变更为主库

4.2修改配置文件(mongo.cnf)将端口10001修改为20001
port = 20001

4.3启动该库
[root@localhost bin]# ./mongod -f /opt/mongodb3015/conf/mongo.cnf

4.4登陆主库执行如下命令
root@localhost bin]# ./mongo 192.168.1.135:20002
repltest:PRIMARY> use admin
repltest:PRIMARY> db.auth("sa","123456")
repltest:PRIMARY> rs.remove("192.168.1.134:10001") ##移除原配置文件中的已经变更地址的主机
repltest:PRIMARY> rs.add("192.168.1.134:20001") ##添加变更后的端口

5.整个配置完成后查看配置和状态

repltest:PRIMARY> rs.conf()

{

        "_id" : "repltest",

        "version" : 7,

        "members" : [

                {

                        "_id" : 3,

                        "host" : "192.168.1.135:20002",

                        "arbiterOnly" : false,

                        "buildIndexes" : true,

                        "hidden" : false,

                        "priority" : 1,

                        "tags" : {

                        },

                        "slaveDelay" : 0,

                        "votes" : 1

                },

                {

                        "_id" : 4,

                        "host" : "192.168.1.135:20003",

                        "arbiterOnly" : true,

                        "buildIndexes" : true,

                        "hidden" : false,

                        "priority" : 1,

                        "tags" : {

                        },

                        "slaveDelay" : 0,

                        "votes" : 1

                },

                {

                        "_id" : 5,

                        "host" : "192.168.1.134:20001",

                        "arbiterOnly" : false,

                        "buildIndexes" : true,

                        "hidden" : false,

                        "priority" : 1,

                        "tags" : {

                        },

                        "slaveDelay" : 0,

                        "votes" : 1

                }

        ],

        "settings" : {

                "chainingAllowed" : true,

                "heartbeatTimeoutSecs" : 10,

                "getLastErrorModes" : {

                },

                "getLastErrorDefaults" : {

                        "w" : 1,

                        "wtimeout" : 0

                }

        }

}

repltest:PRIMARY> rs.status()

{

        "set" : "repltest",

        "date" : ISODate("2019-02-21T01:13:14.107Z"),

        "myState" : 1,

        "members" : [

                {

                        "_id" : 3,

                        "name" : "192.168.1.135:20002",

                        "health" : 1,

                        "state" : 1,

                        "stateStr" : "PRIMARY",

                        "uptime" : 1504,

                        "optime" : Timestamp(1550711569, 1),

                        "optimeDate" : ISODate("2019-02-21T01:12:49Z"),

                        "electionTime" : Timestamp(1550711217, 1),

                        "electionDate" : ISODate("2019-02-21T01:06:57Z"),

                        "configVersion" : 7,

                        "self" : true

                },

                {

                        "_id" : 4,

                        "name" : "192.168.1.135:20003",

                        "health" : 1,

                        "state" : 7,

                        "stateStr" : "ARBITER",

                        "uptime" : 596,

                        "lastHeartbeat" : ISODate("2019-02-21T01:13:13.747Z"),

                        "lastHeartbeatRecv" : ISODate("2019-02-21T01:13:12.451Z"),

                        "pingMs" : 0,

                        "configVersion" : 7

                },

                {

                        "_id" : 5,

                        "name" : "192.168.1.134:20001",

                        "health" : 1,

                        "state" : 2,

                        "stateStr" : "SECONDARY",

                        "uptime" : 22,

                        "optime" : Timestamp(1550711569, 1),

                        "optimeDate" : ISODate("2019-02-21T01:12:49Z"),

                        "lastHeartbeat" : ISODate("2019-02-21T01:13:13.791Z"),

                        "lastHeartbeatRecv" : ISODate("2019-02-21T01:13:13.851Z"),

                        "pingMs" : 0,

                        "syncingTo" : "192.168.1.135:20002",

                        "configVersion" : 7

                }

        ],

        "ok" : 1

}

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