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
}