Shulou(Shulou.com)06/01 Report--

1. Modify the priority of each member in the replica set:

Shard1:PRIMARY > conf=rs.conf ()

{

"_ id": "shard1"

"version": 3

"protocolVersion": NumberLong (1)

"members": [

{

"_ id": 0

"host": "mongo01-jp:27027"

"arbiterOnly": false

"buildIndexes": true

"hidden": false

"priority": 1

"tags": {

}

"slaveDelay": NumberLong (0)

"votes": 1

}

{

"_ id": 1

"host": "mongo02-jp:27027"

"arbiterOnly": false

"buildIndexes": true

"hidden": false

"priority": 1

"tags": {

}

"slaveDelay": NumberLong (0)

"votes": 1

}

{

"_ id": 2

"host": "mongo03-jp:27027"

"arbiterOnly": true

"buildIndexes": true

"hidden": false

"priority": 1

"tags": {

}

"slaveDelay": NumberLong (0)

"votes": 1

}

]

"settings": {

"chainingAllowed": true

"heartbeatIntervalMillis": 2000

"heartbeatTimeoutSecs": 10

"electionTimeoutMillis": 10000

"catchUpTimeoutMillis": 2000

"getLastErrorModes": {

}

"getLastErrorDefaults": {

"w": 1

"wtimeout": 0

}

"replicaSetId": ObjectId ("5850deb0205cd94104cd9a38")

}

}

Shard1:PRIMARY > conf.members [0] .priority = 100

one hundred

Shard1:PRIMARY > conf.members [1] .priority = 90

ninety

Shard1:PRIMARY > rs.reconfig (conf)

{"ok": 1}

Shard1:PRIMARY > rs.conf ()

{

"_ id": "shard1"

"version": 4

"protocolVersion": NumberLong (1)

"members": [

{

"_ id": 0

"host": "mongo01-jp:27027"

"arbiterOnly": false

"buildIndexes": true

"hidden": false

"priority":

"tags": {

}

"slaveDelay": NumberLong (0)

"votes": 1

}

{

"_ id": 1

"host": "mongo02-jp:27027"

"arbiterOnly": false

"buildIndexes": true

"hidden": false

"priority": 90

"tags": {

}

"slaveDelay": NumberLong (0)

"votes": 1

}

{

"_ id": 2

"host": "mongo03-jp:27027"

"arbiterOnly": true

"buildIndexes": true

"hidden": false

"priority": 1

"tags": {

}

"slaveDelay": NumberLong (0)

"votes": 1

}

]

"settings": {

"chainingAllowed": true

"heartbeatIntervalMillis": 2000

"heartbeatTimeoutSecs": 10

"electionTimeoutMillis": 10000

"catchUpTimeoutMillis": 2000

"getLastErrorModes": {

}

"getLastErrorDefaults": {

"w": 1

"wtimeout": 0

}

"replicaSetId": ObjectId ("5850deb0205cd94104cd9a38")

}

}

Shard1:PRIMARY >

With regard to the priority range from 0 to 1000 (version 3.2 and above), the higher the priority, the more likely it is to become a primary;. If the priority is 0, the node is not eligible to participate in the primary election.

If you want a node not to participate in the election of primary, there are two ways: 1, set the priority of the node to 0fie2, and rs.freeze (30) temporarily freeze 30s when cluster elects primary.

If you want to reduce this primary node to the secondary state, you can execute rs.stepDown ().

Delete members and re-add members in the replica set

Shard2:PRIMARY > rs.status ()

{

"set": "shard2"

Date: ISODate ("2016-12-14T06:12:11.986Z")

"myState": 1

"term": NumberLong (1)

"heartbeatIntervalMillis": NumberLong (2000)

"optimes": {

"lastCommittedOpTime": {

Ts: Timestamp (1481695926, 1)

"t": NumberLong (1)

}

"appliedOpTime": {

Ts: Timestamp (1481695926, 1)

"t": NumberLong (1)

}

"durableOpTime": {

Ts: Timestamp (1481695926, 1)

"t": NumberLong (1)

}

}

"members": [

{

"_ id": 0

"name": "mongo02-jp:27028"

"health": 1

"state": 1

"stateStr": "PRIMARY"

"uptime": 1128

"optime": {

Ts: Timestamp (1481695926, 1)

"t": NumberLong (1)

}

OptimeDate: ISODate ("2016-12-14T06:12:06Z")

ElectionTime: Timestamp (1481695445, 2)

ElectionDate: ISODate ("2016-12-14T06:04:05Z")

"configVersion": 4

"self": true

}

{

"_ id": 1

"name": "mongo01-jp:27028"

"health": 1

"state": 2

"stateStr": "SECONDARY"

Uptime: 464

"optime": {

Ts: Timestamp (1481695926, 1)

"t": NumberLong (1)

}

"optimeDurable": {

Ts: Timestamp (1481695926, 1)

"t": NumberLong (1)

}

OptimeDate: ISODate ("2016-12-14T06:12:06Z")

OptimeDurableDate: ISODate ("2016-12-14T06:12:06Z")

LastHeartbeat: ISODate ("2016-12-14T06:12:10.206Z")

LastHeartbeatRecv: ISODate ("2016-12-14T06:12:11.202Z")

"pingMs": NumberLong (0)

"syncingTo": "mongo02-jp:27028"

"configVersion": 4

}

{

"_ id": 2

"name": "mongo03-jp:27028"

"health": 1

"state": 7

"stateStr": "ARBITER"

Uptime: 439

LastHeartbeat: ISODate ("2016-12-14T06:12:10.205Z")

LastHeartbeatRecv: ISODate ("2016-12-14T06:12:10.125Z")

"pingMs": NumberLong (0)

"configVersion": 4

}

]

"ok": 1

}

Shard2:PRIMARY > rs.remove ("mongo01-jp:27028")

{"ok": 1}

Shard2:PRIMARY > rs.remove ("mongo03-jp:27028")

{"ok": 1}

Shard2:PRIMARY > rs.status ()

{

"set": "shard2"

Date: ISODate ("2016-12-14T06:13:18.227Z")

"myState": 1

"term": NumberLong (1)

"heartbeatIntervalMillis": NumberLong (2000)

"optimes": {

"lastCommittedOpTime": {

Ts: Timestamp (1481695994, 1)

"t": NumberLong (1)

}

"appliedOpTime": {

Ts: Timestamp (1481695994, 1)

"t": NumberLong (1)

}

"durableOpTime": {

Ts: Timestamp (1481695994, 1)

"t": NumberLong (1)

}

}

"members": [

{

"_ id": 0

"name": "mongo02-jp:27028"

"health": 1

"state": 1

"stateStr": "PRIMARY"

"uptime": 1195

"optime": {

Ts: Timestamp (1481695994, 1)

"t": NumberLong (1)

}

OptimeDate: ISODate ("2016-12-14T06:13:14Z")

ElectionTime: Timestamp (1481695445, 2)

ElectionDate: ISODate ("2016-12-14T06:04:05Z")

"configVersion": 6

"self": true

}

]

"ok": 1

}

Shard2:PRIMARY > rs.add ("mongo03-jp:27028")

{"ok": 1}

Shard2:PRIMARY > rs.addArb ("mongo01-jp:27028")

{"ok": 1}

Shard2:PRIMARY > rs.status ()

{

"set": "shard2"

Date: ISODate ("2016-12-14T06:39:40.718Z")

"myState": 1

"term": NumberLong (1)

"heartbeatIntervalMillis": NumberLong (2000)

"optimes": {

"lastCommittedOpTime": {

Ts: Timestamp (1481697576, 1)

"t": NumberLong (1)

}

"appliedOpTime": {

Ts: Timestamp (1481697576, 1)

"t": NumberLong (1)

}

"durableOpTime": {

Ts: Timestamp (1481697576, 1)

"t": NumberLong (1)

}

}

"members": [

{

"_ id": 0

"name": "mongo02-jp:27028"

"health": 1

"state": 1

"stateStr": "PRIMARY"

"uptime": 2777

"optime": {

Ts: Timestamp (1481697576, 1)

"t": NumberLong (1)

}

OptimeDate: ISODate ("2016-12-14T06:39:36Z")

ElectionTime: Timestamp (1481695445, 2)

ElectionDate: ISODate ("2016-12-14T06:04:05Z")

"configVersion": 9

"self": true

}

{

"_ id": 1

"name": "mongo03-jp:27028"

"health": 1

"state": 2

"stateStr": "SECONDARY"

"uptime": 1034

"optime": {

Ts: Timestamp (1481697576, 1)

"t": NumberLong (1)

}

"optimeDurable": {

Ts: Timestamp (1481697576, 1)

"t": NumberLong (1)

}

OptimeDate: ISODate ("2016-12-14T06:39:36Z")

OptimeDurableDate: ISODate ("2016-12-14T06:39:36Z")

LastHeartbeat: ISODate ("2016-12-14T06:39:38.838Z")

LastHeartbeatRecv: ISODate ("2016-12-14T06:39:39.594Z")

"pingMs": NumberLong (0)

"syncingTo": "mongo02-jp:27028"

"configVersion": 9

}

{

"_ id": 2

"name": "mongo01-jp:27028"

"health": 1

"state": 7

"stateStr": "ARBITER"

"uptime": 1128

LastHeartbeat: ISODate ("2016-12-14T06:39:39.053Z")

LastHeartbeatRecv: ISODate ("2016-12-14T06:39:36.708Z")

"pingMs": NumberLong (0)

"configVersion": 9

}

]

"ok": 1

}

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