环境:
OS:Centos 7
mongodb:5.0
当前的ip 变更后的ip
192.168.1.108 192.168.1.105 PRIMARY
192.168.1.109 192.168.1.106 SECONDARY
192.168.1.110 192.168.1.107 SECONDARY
1.查看当前的集群
登录一个节点上查看
/usr/local/services/mongodb/bin/mongo 192.168.1.108:29001
myrepl:PRIMARY> use admin
myrepl:PRIMARY> db.auth("test","test123");
myrepl:PRIMARY> rs.conf()
{
"_id" : "myrepl",
"version" : 1,
"term" : 6,
"members" : [
{
"_id" : 0,
"host" : "192.168.1.108:29001",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 1,
"host" : "192.168.1.109:29001",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : NumberLong(0),
"votes" : 1
},
{
"_id" : 2,
"host" : "192.168.1.110:29001",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"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("64d58c8b10dc4e229f96f8a7")
}
}
2.停掉mongodb
每个节点上操作,先停掉从再停主
/usr/local/services/mongodb/bin/mongo localhost:29001
use admin
db.auth("test","test123");
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
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
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 = "192.168.1.105:29001"
cfg.members[1].host = "192.168.1.106:29001"
cfg.members[2].host = "192.168.1.107:29001"
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
vi /home/middle/mongodb/conf/mongo.cnf
shardsvr=true
replSet=myrepl
auth=true
keyFile=/home/middle/mongodb/key/keyfile
8.重新启动
每个节点都执行
/usr/local/services/mongodb/bin/mongod -f /home/middle/mongodb/conf/mongo.cnf
9.登录检查
/usr/local/services/mongodb/bin/mongo localhost:29001
use admin
db.auth("test","test123");
myrepl:PRIMARY> rs.status()
{
"set" : "myrepl",
"date" : ISODate("2023-09-02T07:08:30.560Z"),
"myState" : 1,
"term" : NumberLong(7),
"syncSourceHost" : "",
"syncSourceId" : -1,
"heartbeatIntervalMillis" : NumberLong(2000),
"majorityVoteCount" : 2,
"writeMajorityCount" : 2,
"votingMembersCount" : 3,
"writableVotingMembersCount" : 3,
"optimes" : {
"lastCommittedOpTime" : {
"ts" : Timestamp(1693638501, 1),
"t" : NumberLong(7)
},
"lastCommittedWallTime" : ISODate("2023-09-02T07:08:21.308Z"),
"readConcernMajorityOpTime" : {
"ts" : Timestamp(1693638501, 1),
"t" : NumberLong(7)
},
"appliedOpTime" : {
"ts" : Timestamp(1693638501, 1),
"t" : NumberLong(7)
},
"durableOpTime" : {
"ts" : Timestamp(1693638501, 1),
"t" : NumberLong(7)
},
"lastAppliedWallTime" : ISODate("2023-09-02T07:08:21.308Z"),
"lastDurableWallTime" : ISODate("2023-09-02T07:08:21.308Z")
},
"lastStableRecoveryTimestamp" : Timestamp(1693637577, 1),
"electionCandidateMetrics" : {
"lastElectionReason" : "electionTimeout",
"lastElectionDate" : ISODate("2023-09-02T07:07:51.248Z"),
"electionTerm" : NumberLong(7),
"lastCommittedOpTimeAtElection" : {
"ts" : Timestamp(0, 0),
"t" : NumberLong(-1)
},
"lastSeenOpTimeAtElection" : {
"ts" : Timestamp(1693637587, 1),
"t" : NumberLong(6)
},
"numVotesNeeded" : 2,
"priorityAtElection" : 1,
"electionTimeoutMillis" : NumberLong(10000),
"numCatchUpOps" : NumberLong(0),
"newTermStartDate" : ISODate("2023-09-02T07:07:51.301Z"),
"wMajorityWriteAvailabilityDate" : ISODate("2023-09-02T07:07:51.867Z")
},
"members" : [
{
"_id" : 0,
"name" : "192.168.1.105:29001",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 51,
"optime" : {
"ts" : Timestamp(1693638501, 1),
"t" : NumberLong(7)
},
"optimeDate" : ISODate("2023-09-02T07:08:21Z"),
"lastAppliedWallTime" : ISODate("2023-09-02T07:08:21.308Z"),
"lastDurableWallTime" : ISODate("2023-09-02T07:08:21.308Z"),
"syncSourceHost" : "",
"syncSourceId" : -1,
"infoMessage" : "Could not find member to sync from",
"electionTime" : Timestamp(1693638471, 1),
"electionDate" : ISODate("2023-09-02T07:07:51Z"),
"configVersion" : 1,
"configTerm" : 7,
"self" : true,
"lastHeartbeatMessage" : ""
},
{
"_id" : 1,
"name" : "192.168.1.106:29001",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 47,
"optime" : {
"ts" : Timestamp(1693638501, 1),
"t" : NumberLong(7)
},
"optimeDurable" : {
"ts" : Timestamp(1693638501, 1),
"t" : NumberLong(7)
},
"optimeDate" : ISODate("2023-09-02T07:08:21Z"),
"optimeDurableDate" : ISODate("2023-09-02T07:08:21Z"),
"lastAppliedWallTime" : ISODate("2023-09-02T07:08:21.308Z"),
"lastDurableWallTime" : ISODate("2023-09-02T07:08:21.308Z"),
"lastHeartbeat" : ISODate("2023-09-02T07:08:29.328Z"),
"lastHeartbeatRecv" : ISODate("2023-09-02T07:08:30.344Z"),
"pingMs" : NumberLong(0),
"lastHeartbeatMessage" : "",
"syncSourceHost" : "192.168.1.105:29001",
"syncSourceId" : 0,
"infoMessage" : "",
"configVersion" : 1,
"configTerm" : 7
},
{
"_id" : 2,
"name" : "192.168.1.107:29001",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 44,
"optime" : {
"ts" : Timestamp(1693638501, 1),
"t" : NumberLong(7)
},
"optimeDurable" : {
"ts" : Timestamp(1693638501, 1),
"t" : NumberLong(7)
},
"optimeDate" : ISODate("2023-09-02T07:08:21Z"),
"optimeDurableDate" : ISODate("2023-09-02T07:08:21Z"),
"lastAppliedWallTime" : ISODate("2023-09-02T07:08:21.308Z"),
"lastDurableWallTime" : ISODate("2023-09-02T07:08:21.308Z"),
"lastHeartbeat" : ISODate("2023-09-02T07:08:29.328Z"),
"lastHeartbeatRecv" : ISODate("2023-09-02T07:08:30.345Z"),
"pingMs" : NumberLong(0),
"lastHeartbeatMessage" : "",
"syncSourceHost" : "192.168.1.105:29001",
"syncSourceId" : 0,
"infoMessage" : "",
"configVersion" : 1,
"configTerm" : 7
}
],
"ok" : 1
}