MongoDB 复制命令

db.runCommand( { isMaster: 1 } )

{ replSetAbortPrimaryCatchUp: 1 }

db.runCommand( { replSetGetConfig: 1 } );

{
  _id: <string>,
  version: <int>,
  protocolVersion: <number>,
  writeConcernMajorityJournalDefault: <boolean>,
  configsvr: <boolean>,
  members: [
    {
      _id: <int>,
      host: <string>,
      arbiterOnly: <boolean>,
      buildIndexes: <boolean>,
      hidden: <boolean>,
      priority: <number>,
      tags: <document>,
      slaveDelay: <int>,
      votes: <number>
    },
    ...
  ],
  settings: {
    chainingAllowed : <boolean>,
    heartbeatIntervalMillis : <int>,
    heartbeatTimeoutSecs: <int>,
    electionTimeoutMillis : <int>,
    catchUpTimeoutMillis : <int>,
    getLastErrorModes : <document>,
    getLastErrorDefaults : <document>,
    replicaSetId: <ObjectId>
  }
}

{ replSetInitiate : <config_document> }

db.adminCommand( { replSetGetStatus: 1 } )

db.adminCommand( { replSetGetStatus : 1 } )
{
   "set" : "replset",
   "date" : ISODate("2019-12-04T04:49:18.693Z"),
   "myState" : 1,
   "term" : NumberLong(3),
   "syncingTo" : "",
   "syncSourceHost" : "",
   "syncSourceId" : -1,
   "heartbeatIntervalMillis" : NumberLong(2000),
   "majorityVoteCount" : 2,
   "writeMajorityCount" : 2,
   "optimes" : {
      "lastCommittedOpTime" : {
         "ts" : Timestamp(1575434954, 1),
         "t" : NumberLong(3)
      },
      "lastCommittedWallTime" : ISODate("2019-12-04T04:49:14.378Z"),
      "readConcernMajorityOpTime" : {
         "ts" : Timestamp(1575434954, 1),
         "t" : NumberLong(3)
      },
      "readConcernMajorityWallTime" : ISODate("2019-12-04T04:49:14.378Z"),
      "appliedOpTime" : {
         "ts" : Timestamp(1575434954, 1),
         "t" : NumberLong(3)
      },
      "durableOpTime" : {
         "ts" : Timestamp(1575434954, 1),
         "t" : NumberLong(3)
      },
      "lastAppliedWallTime" : ISODate("2019-12-04T04:49:14.378Z"),
      "lastDurableWallTime" : ISODate("2019-12-04T04:49:14.378Z")
   },
   "lastStableRecoveryTimestamp" : Timestamp(1575434935, 1),
   "lastStableCheckpointTimestamp" : Timestamp(1575434935, 1),
   "electionCandidateMetrics" : {
      "lastElectionReason" : "stepUpRequestSkipDryRun",
      "lastElectionDate" : ISODate("2019-12-04T04:49:04.085Z"),
      "electionTerm" : NumberLong(3),
      "lastCommittedOpTimeAtElection" : {
         "ts" : Timestamp(1575434935, 1),
         "t" : NumberLong(2)
      },
      "lastSeenOpTimeAtElection" : {
         "ts" : Timestamp(1575434935, 1),
         "t" : NumberLong(2)
      },
      "numVotesNeeded" : 2,
      "priorityAtElection" : 1,
      "electionTimeoutMillis" : NumberLong(10000),
      "priorPrimaryMemberId" : 1,
      "numCatchUpOps" : NumberLong(0),
      "newTermStartDate" : ISODate("2019-12-04T04:49:04.366Z"),
      "wMajorityWriteAvailabilityDate" : ISODate("2019-12-04T04:49:04.382Z")
   },
   "electionParticipantMetrics" : {
      "votedForCandidate" : true,
      "electionTerm" : NumberLong(2),
      "lastVoteDate" : ISODate("2019-12-04T04:16:54.398Z"),
      "electionCandidateMemberId" : 1,
      "voteReason" : "",
      "lastAppliedOpTimeAtElection" : {
         "ts" : Timestamp(1575433013, 1),
         "t" : NumberLong(1)
      },
      "maxAppliedOpTimeInSet" : {
         "ts" : Timestamp(1575433013, 1),
         "t" : NumberLong(1)
      },
      "priorityAtElection" : 1
   },
   "members" : [
      {
         "_id" : 0,
         "name" : "m1.example.net:27017",
         "ip" : "198.51.100.1",
         "health" : 1,
         "state" : 1,
         "stateStr" : "PRIMARY",
         "uptime" : 2019,
         "optime" : {
            "ts" : Timestamp(1575434954, 1),
            "t" : NumberLong(3)
         },
         "optimeDate" : ISODate("2019-12-04T04:49:14Z"),
         "syncingTo" : "",
         "syncSourceHost" : "",
         "syncSourceId" : -1,
         "infoMessage" : "",
         "electionTime" : Timestamp(1575434944, 1),
         "electionDate" : ISODate("2019-12-04T04:49:04Z"),
         "configVersion" : 1,
         "self" : true,
         "lastHeartbeatMessage" : ""
      },
      {
         "_id" : 1,
         "name" : "m2.example.net:27017",
         "ip" : "198.51.100.2",
         "health" : 1,
         "state" : 2,
         "stateStr" : "SECONDARY",
         "uptime" : 2016,
         "optime" : {
            "ts" : Timestamp(1575434954, 1),
            "t" : NumberLong(3)
         },
         "optimeDurable" : {
            "ts" : Timestamp(1575434954, 1),
            "t" : NumberLong(3)
         },
         "optimeDate" : ISODate("2019-12-04T04:49:14Z"),
         "optimeDurableDate" : ISODate("2019-12-04T04:49:14Z"),
         "lastHeartbeat" : ISODate("2019-12-04T04:49:18.138Z"),
         "lastHeartbeatRecv" : ISODate("2019-12-04T04:49:18.460Z"),
         "pingMs" : NumberLong(0),
         "lastHeartbeatMessage" : "",
         "syncingTo" : "m1.example.net:27017",
         "syncSourceHost" : "m1.example.net:27017",
         "syncSourceId" : 0,
         "infoMessage" : "",
         "configVersion" : 1
      },
      {
         "_id" : 2,
         "name" : "m3.example.net:27017",
         "ip" : "198.51.100.3",
         "health" : 1,
         "state" : 2,
         "stateStr" : "SECONDARY",
         "uptime" : 2016,
         "optime" : {
            "ts" : Timestamp(1575434954, 1),
            "t" : NumberLong(3)
         },
         "optimeDurable" : {
            "ts" : Timestamp(1575434954, 1),
            "t" : NumberLong(3)
         },
         "optimeDate" : ISODate("2019-12-04T04:49:14Z"),
         "optimeDurableDate" : ISODate("2019-12-04T04:49:14Z"),
         "lastHeartbeat" : ISODate("2019-12-04T04:49:18.138Z"),
         "lastHeartbeatRecv" : ISODate("2019-12-04T04:49:17.739Z"),
         "pingMs" : NumberLong(0),
         "lastHeartbeatMessage" : "",
         "syncingTo" : "m1.example.net:27017",
         "syncSourceHost" : "m1.example.net:27017",
         "syncSourceId" : 0,
         "infoMessage" : "",
         "configVersion" : 1
      }
   ],
   "ok" : 1,
   "$clusterTime" : {
      "clusterTime" : Timestamp(1575434954, 1),
      "signature" : {
         "hash" : BinData(0,"Dz4WAzT3KpB5XHXwy3MgcjL3M8Q="),
         "keyId" : NumberLong("6766433010175705091")
      }
   },
   "operationTime" : Timestamp(1575434954, 1)
}