1. 副本集的搭建

参考之前的文章
https://liuyunshengsir.blog.csdn.net/article/details/127984232

2.物理备份文件

直接备份目录即可
/data/mongodb/rs1

3.在新的机器恢复

3.1 启动节点

/home/mongodb/mongodb/bin/mongod --replSet rs --dbpath /data/mongodb/rs1 --port 27017 --fork --logpath /data/mongodb/rs1/mongod.log --bind_ip_all

/home/mongodb/bin/mongo

3.2 查看状态

由于在新的环境ip发生的变化，会出现下面的报错

> rs.status()
{
        "ok" : 0,
        "errmsg" : "Our replica set config is invalid or we are not a member of it",
        "code" : 93,
        "codeName" : "InvalidReplicaSetConfig"
}

3.3 进行配置

rs.reconfig({_id: "rs",version: 1,members: [{ _id: 0, host : "localhost:27017" }]},{force:true})

3.4 验证元数据的正确性

> rs.reconfig({_id: "rs",version: 1,members: [{ _id: 0, host : "localhost:27017" }]},{force:true})
{ "ok" : 1 }
rs:SECONDARY> rs.status()
{
        "set" : "rs",
        "date" : ISODate("2023-01-06T08:19:59.590Z"),
        "myState" : 1,
        "term" : NumberLong(6),
        "syncSourceHost" : "",
        "syncSourceId" : -1,
        "heartbeatIntervalMillis" : NumberLong(2000),
        "majorityVoteCount" : 1,
        "writeMajorityCount" : 1,
        "votingMembersCount" : 1,
        "writableVotingMembersCount" : 1,
        "optimes" : {
                "lastCommittedOpTime" : {
                        "ts" : Timestamp(1672993194, 2),
                        "t" : NumberLong(6)
                },
                "lastCommittedWallTime" : ISODate("2023-01-06T08:19:54.552Z"),
                "readConcernMajorityOpTime" : {
                        "ts" : Timestamp(1672993194, 2),
                        "t" : NumberLong(6)
                },
                "appliedOpTime" : {
                        "ts" : Timestamp(1672993194, 2),
                        "t" : NumberLong(6)
                },
                "durableOpTime" : {
                        "ts" : Timestamp(1672993194, 2),
                        "t" : NumberLong(6)
                },
                "lastAppliedWallTime" : ISODate("2023-01-06T08:19:54.552Z"),
                "lastDurableWallTime" : ISODate("2023-01-06T08:19:54.552Z")
        },
        "lastStableRecoveryTimestamp" : Timestamp(1672993194, 2),
        "electionCandidateMetrics" : {
                "lastElectionReason" : "electionTimeout",
                "lastElectionDate" : ISODate("2023-01-06T08:19:54.548Z"),
                "electionTerm" : NumberLong(6),
                "lastCommittedOpTimeAtElection" : {
                        "ts" : Timestamp(0, 0),
                        "t" : NumberLong(-1)
                },
                "lastSeenOpTimeAtElection" : {
                        "ts" : Timestamp(1672992257, 1),
                        "t" : NumberLong(5)
                },
                "numVotesNeeded" : 1,
                "priorityAtElection" : 1,
                "electionTimeoutMillis" : NumberLong(10000),
                "newTermStartDate" : ISODate("2023-01-06T08:19:54.552Z"),
                "wMajorityWriteAvailabilityDate" : ISODate("2023-01-06T08:19:54.555Z")
        },
        "members" : [
                {
                        "_id" : 0,
                        "name" : "localhost:27017",
                        "health" : 1,
                        "state" : 1,
                        "stateStr" : "PRIMARY",
                        "uptime" : 485,
                        "optime" : {
                                "ts" : Timestamp(1672993194, 2),
                                "t" : NumberLong(6)
                        },
                        "optimeDate" : ISODate("2023-01-06T08:19:54Z"),
                        "lastAppliedWallTime" : ISODate("2023-01-06T08:19:54.552Z"),
                        "lastDurableWallTime" : ISODate("2023-01-06T08:19:54.552Z"),
                        "syncSourceHost" : "",
                        "syncSourceId" : -1,
                        "infoMessage" : "Could not find member to sync from",
                        "electionTime" : Timestamp(1672993194, 1),
                        "electionDate" : ISODate("2023-01-06T08:19:54Z"),
                        "configVersion" : 112688,
                        "configTerm" : -1,
                        "self" : true,
                        "lastHeartbeatMessage" : ""
                }
        ],
        "ok" : 1,
        "$clusterTime" : {
                "clusterTime" : Timestamp(1672993194, 2),
                "signature" : {
                        "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
                        "keyId" : NumberLong(0)
                }
        },
        "operationTime" : Timestamp(1672993194, 2)
}
rs:PRIMARY> show dbs
admin   0.000GB
config  0.000GB
db001   0.000GB
local   0.000GB