CODEWITHSUNDEEP
node.jsmongodbmongodb-replica-set
Ankit
Ankit

Reputation: 1011

MongoDB replica set on windows facing some basic issues

I am on Windows 10 Environment. I would like to Implement Replica Set on MongoDB. I am facing some issues..

For that, I cover almost many tutorials to implement the things on Windows Machine.

I want to create a replica set consisting of a primary node and another node, which will be replicating the data.

My structure is like this:

I have defined the service with this command:

sc.exe create MongoDB binPath= "\"C:\Program Files\MongoDB\Server\3.4\bin\mongod.exe\" --service --config=\"C:\data\mongod.cfg\"" DisplayName= "MongoDB" start= "auto"

I have started the service with this command:

net start mongodb

It runs successfully.

However, now I am getting problems with replication. What I did to set up the replica set is:

  1. create three subfolders under the data folder named rs1, rs2, rs3, using the command mkdir \data\rs1 \data\rs1 \data\rs2
  2. Implement the Replset for replication of three servers.

My three startup commands are: 1. start mongod --replSet udd --logpath \data\rs1\1.log --dbpath \data\rs1 --port 27017 --smallfiles --oplogSize 64 2. start mongod --replSet udd --logpath \data\rs1\2.log --dbpath \data\rs2 --port 27018 --smallfiles --oplogSize 64 3. start mongod --replSet udd --logpath \data\rs1\3.log --dbpath \data\rs3 --port 27019 --smallfiles --oplogSize 64

With those running, I can type mongo --port 27017; this connects properly to 127.0.0.1:27017/

Now my problem is that earlier the mongo shell prompt said udd:PRIMARY>; but now it has changed to say: udd:OTHER>

Please guide me how I can move forward with replication; any help is really appreciated.

My rs.reconfig(config,{"force":true}) will be

    udd:OTHER> config =  {_id: "udd", members: [
... {_id: 0, host: "127.0.0.1:27017"},
... {_id: 1, host: "127.0.0.1:27018"},
... {_id: 2, host: "127.0.0.1:27019"}
... ]}
{
        "_id" : "udd",
        "members" : [
                {
                        "_id" : 0,
                        "host" : "127.0.0.1:27017"
                },
                {
                        "_id" : 1,
                        "host" : "127.0.0.1:27018"
                },
                {
                        "_id" : 2,
                        "host" : "127.0.0.1:27019"
                }
        ]
}
udd:OTHER> rs.reconfig(config,{"force":true})
{ "ok" : 1 }
udd:OTHER> rs.status()
{
        "set" : "udd",
        "date" : ISODate("2018-01-31T11:58:15.717Z"),
        "myState" : 2,
        "term" : NumberLong(1),
        "heartbeatIntervalMillis" : NumberLong(2000),
        "optimes" : {
                "lastCommittedOpTime" : {
                        "ts" : Timestamp(0, 0),
                        "t" : NumberLong(-1)
                },
                "appliedOpTime" : {
                        "ts" : Timestamp(1517381781, 1),
                        "t" : NumberLong(1)
                },
                "durableOpTime" : {
                        "ts" : Timestamp(1517381781, 1),
                        "t" : NumberLong(1)
                }
        },
        "members" : [
                {
                        "_id" : 0,
                        "name" : "127.0.0.1:27017",
                        "health" : 1,
                        "state" : 2,
                        "stateStr" : "SECONDARY",
                        "uptime" : 1506,
                        "optime" : {
                                "ts" : Timestamp(1517381781, 1),
                                "t" : NumberLong(1)
                        },
                        "optimeDate" : ISODate("2018-01-31T06:56:21Z"),
                        "configVersion" : 37530,
                        "self" : true
                },
                {
                        "_id" : 1,
                        "name" : "127.0.0.1:27018",
                        "health" : 0,
                        "state" : 8,
                        "stateStr" : "(not reachable/healthy)",
                        "uptime" : 0,
                        "optime" : {
                                "ts" : Timestamp(0, 0),
                                "t" : NumberLong(-1)
                        },
                        "optimeDurable" : {
                                "ts" : Timestamp(0, 0),
                                "t" : NumberLong(-1)
                        },
                        "optimeDate" : ISODate("1970-01-01T00:00:00Z"),
                        "optimeDurableDate" : ISODate("1970-01-01T00:00:00Z"),
                        "lastHeartbeat" : ISODate("2018-01-31T11:58:15.677Z"),
                        "lastHeartbeatRecv" : ISODate("1970-01-01T00:00:00Z"),
                        "pingMs" : NumberLong(0),
                        "lastHeartbeatMessage" : "No connection could be made because the target machine actively refused it.",
                        "configVersion" : -1
                },
                {
                        "_id" : 2,
                        "name" : "127.0.0.1:27019",
                        "health" : 0,
                        "state" : 8,
                        "stateStr" : "(not reachable/healthy)",
                        "uptime" : 0,
                        "optime" : {
                                "ts" : Timestamp(0, 0),
                                "t" : NumberLong(-1)
                        },
                        "optimeDurable" : {
                                "ts" : Timestamp(0, 0),
                                "t" : NumberLong(-1)
                        },
                        "optimeDate" : ISODate("1970-01-01T00:00:00Z"),
                        "optimeDurableDate" : ISODate("1970-01-01T00:00:00Z"),
                        "lastHeartbeat" : ISODate("2018-01-31T11:58:15.670Z"),
                        "lastHeartbeatRecv" : ISODate("1970-01-01T00:00:00Z"),
                        "pingMs" : NumberLong(0),
                        "lastHeartbeatMessage" : "No connection could be made because the target machine actively refused it.",
                        "configVersion" : -1
                }
        ],
        "ok" : 1
}
udd:SECONDARY>

Now rs.conf() will be

udd:SECONDARY> rs.conf()
{
        "_id" : "udd",
        "version" : 37530,
        "protocolVersion" : NumberLong(1),
        "members" : [
                {
                        "_id" : 0,
                        "host" : "127.0.0.1:27017",
                        "arbiterOnly" : false,
                        "buildIndexes" : true,
                        "hidden" : false,
                        "priority" : 1,
                        "tags" : {

                        },
                        "slaveDelay" : NumberLong(0),
                        "votes" : 1
                },
                {
                        "_id" : 1,
                        "host" : "127.0.0.1:27018",
                        "arbiterOnly" : false,
                        "buildIndexes" : true,
                        "hidden" : false,
                        "priority" : 1,
                        "tags" : {

                        },
                        "slaveDelay" : NumberLong(0),
                        "votes" : 1
                },
                {
                        "_id" : 2,
                        "host" : "127.0.0.1:27019",
                        "arbiterOnly" : false,
                        "buildIndexes" : true,
                        "hidden" : false,
                        "priority" : 1,
                        "tags" : {

                        },
                        "slaveDelay" : NumberLong(0),
                        "votes" : 1
                }
        ],
        "settings" : {
                "chainingAllowed" : true,
                "heartbeatIntervalMillis" : 2000,
                "heartbeatTimeoutSecs" : 10,
                "electionTimeoutMillis" : 10000,
                "catchUpTimeoutMillis" : 60000,
                "getLastErrorModes" : {

                },
                "getLastErrorDefaults" : {
                        "w" : 1,
                        "wtimeout" : 0
                },
                "replicaSetId" : ObjectId("5a715e56bff9fd66ea55b862")
        }
}
udd:SECONDARY>

Upvotes: 1

Views: 1684

Answers (1)

user9251303
user9251303

Reputation:

Clear error message: InvalidReplicaSetConfig

All 3 rep mongod are started, then try:

rs.reconfig({force:true})

db.isMaster()

Upvotes: 0

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