mongodb副本集(仲裁模式)修改各节点ip(update方式)

环境:
OS:Centos 7
mongodb:5.0
当前的ip 　　　　   变更后的ip
192.168.1.105 　　 192.168.1.108 　　 PRIMARY
192.168.1.106 　　 192.168.1.109 　　 SECONDARY
192.168.1.107 　　 192.168.1.110 　　 ARBITER

 

1.查看当前的集群
登录一个节点上查看

[root@localhost key]# /usr/local/services/mongodb/bin/mongo localhost:29001
use admin
db.auth("test","test123");
myrepl:PRIMARY> rs.conf()
{
        "_id" : "myrepl",
        "version" : 1,
        "term" : 4,
        "members" : [
                {
                        "_id" : 0,
                        "host" : "192.168.1.105:29001",
                        "arbiterOnly" : false,
                        "buildIndexes" : true,
                        "hidden" : false,
                        "priority" : 1,
                        "tags" : {

                        },
                        "slaveDelay" : NumberLong(0),
                        "votes" : 1
                },
                {
                        "_id" : 1,
                        "host" : "192.168.1.106:29001",
                        "arbiterOnly" : false,
                        "buildIndexes" : true,
                        "hidden" : false,
                        "priority" : 1,
                        "tags" : {

                        },
                        "slaveDelay" : NumberLong(0),
                        "votes" : 1
                },
                {
                        "_id" : 2,
                        "host" : "192.168.1.107:29001",
                        "arbiterOnly" : true,
                        "buildIndexes" : true,
                        "hidden" : false,
                        "priority" : 0,
                        "tags" : {

                        },
                        "slaveDelay" : NumberLong(0),
                        "votes" : 1
                }
        ],
        "protocolVersion" : NumberLong(1),
        "writeConcernMajorityJournalDefault" : true,
        "settings" : {
                "chainingAllowed" : true,
                "heartbeatIntervalMillis" : 2000,
                "heartbeatTimeoutSecs" : 10,
                "electionTimeoutMillis" : 10000,
                "catchUpTimeoutMillis" : -1,
                "catchUpTakeoverDelayMillis" : 30000,
                "getLastErrorModes" : {

                },
                "getLastErrorDefaults" : {
                        "w" : 1,
                        "wtimeout" : 0
                },
                "replicaSetId" : ObjectId("64f30914ff7c531f5e18d8f0")
        }
}

 

2.停掉mongodb
每个节点上操作,先停掉从节点和冲裁节点再停主节点
/usr/local/services/mongodb/bin/mongo localhost:29001
use admin
db.auth("test","test123");
db.shutdownServer()

仲裁节点不需要验证
myrepl:ARBITER> use admin
switched to db admin
myrepl:ARBITER> db.shutdownServer()

3.修改每个节点的ip
cd /etc/sysconfig/network-scripts
vi ifcfg-enp0s3

重启网络
systemctl restart network

 

4.单机模式启动每一个节点(除去仲裁节点,因为仲裁节点不存储数据)
我这里以其中一个节点为例子
vi /home/middle/mongodb/conf/mongo.cnf

bind_ip=192.168.1.108,127.0.0.1 ##注意修改ip
##shardsvr=true
##replSet=myrepl
##auth=true
##keyFile=/home/middle/mongodb/key/keyfile

单机模式启动
/usr/local/services/mongodb/bin/mongod -f /home/middle/mongodb/conf/mongo.cnf

 

5.更新配置表(除去仲裁节点,因为仲裁节点不存储数据)
每个节点都要执行该操作

/usr/local/services/mongodb/bin/mongo localhost:29001
use local
db.system.replset.findOne()
cfg = db.system.replset.findOne({_id: 'myrepl'})
cfg.members[0].host = "192.168.1.108:29001"
cfg.members[1].host = "192.168.1.109:29001"
cfg.members[2].host = "192.168.1.110:29001"
db.system.replset.update({_id: 'myrepl'}, cfg)
db.system.replset.findOne()

 

注意这里我的副本集名称为:myrepl,要根据自己的实际情况替换.

 

6.停掉每个节点
/usr/local/services/mongodb/bin/mongo localhost:29001
use admin
db.shutdownServer()

另外的节点也做步骤4 和步骤5、步骤6的操作

 

7.去掉每个节的注释参数(除去仲裁节点)
vi /home/middle/mongodb/conf/mongo.cnf
shardsvr=true
replSet=myrepl
auth=true
keyFile=/home/middle/mongodb/key/keyfile

 

8.仲裁节点需要修改ip

 

9.重新启动
每个节点都执行
/usr/local/services/mongodb/bin/mongod -f /home/middle/mongodb/conf/mongo.cnf

 

10.登录检查

/usr/local/services/mongodb/bin/mongo localhost:29001
use admin
db.auth("test","test123");

        "members" : [
                {
                        "_id" : 0,
                        "name" : "192.168.1.108:29001",
                        "health" : 1,
                        "state" : 1,
                        "stateStr" : "PRIMARY",
                        "uptime" : 59,
                        "optime" : {
                                "ts" : Timestamp(1693651795, 1),
                                "t" : NumberLong(5)
                        },
                        "optimeDate" : ISODate("2023-09-02T10:49:55Z"),
                        "lastAppliedWallTime" : ISODate("2023-09-02T10:49:55.084Z"),
                        "lastDurableWallTime" : ISODate("2023-09-02T10:49:55.084Z"),
                        "syncSourceHost" : "",
                        "syncSourceId" : -1,
                        "infoMessage" : "Could not find member to sync from",
                        "electionTime" : Timestamp(1693651755, 1),
                        "electionDate" : ISODate("2023-09-02T10:49:15Z"),
                        "configVersion" : 1,
                        "configTerm" : 5,
                        "self" : true,
                        "lastHeartbeatMessage" : ""
                },
                {
                        "_id" : 1,
                        "name" : "192.168.1.109:29001",
                        "health" : 1,
                        "state" : 2,
                        "stateStr" : "SECONDARY",
                        "uptime" : 55,
                        "optime" : {
                                "ts" : Timestamp(1693651795, 1),
                                "t" : NumberLong(5)
                        },
                        "optimeDurable" : {
                                "ts" : Timestamp(1693651795, 1),
                                "t" : NumberLong(5)
                        },
                        "optimeDate" : ISODate("2023-09-02T10:49:55Z"),
                        "optimeDurableDate" : ISODate("2023-09-02T10:49:55Z"),
                        "lastAppliedWallTime" : ISODate("2023-09-02T10:49:55.084Z"),
                        "lastDurableWallTime" : ISODate("2023-09-02T10:49:55.084Z"),
                        "lastHeartbeat" : ISODate("2023-09-02T10:50:01.111Z"),
                        "lastHeartbeatRecv" : ISODate("2023-09-02T10:50:02.118Z"),
                        "pingMs" : NumberLong(0),
                        "lastHeartbeatMessage" : "",
                        "syncSourceHost" : "192.168.1.108:29001",
                        "syncSourceId" : 0,
                        "infoMessage" : "",
                        "configVersion" : 1,
                        "configTerm" : 5
                },
                {
                        "_id" : 2,
                        "name" : "192.168.1.110:29001",
                        "health" : 1,
                        "state" : 7,
                        "stateStr" : "ARBITER",
                        "uptime" : 43,
                        "lastHeartbeat" : ISODate("2023-09-02T10:50:01.119Z"),
                        "lastHeartbeatRecv" : ISODate("2023-09-02T10:50:02.407Z"),
                        "pingMs" : NumberLong(0),
                        "lastHeartbeatMessage" : "",
                        "syncSourceHost" : "",
                        "syncSourceId" : -1,
                        "infoMessage" : "",
                        "configVersion" : 1,
                        "configTerm" : 5
                }
        ],
        "ok" : 1
}