【MongoDB】移除复制集成员
2023-03-07 09:26 abce 阅读(250) 评论(0) 编辑 收藏 举报1.使用rs.remove()
(1)关闭mongodb实例
先关闭要移除的mongodb实例
1 | db.shutdownServer() |
(2)连接到复制集的primary节点
使用db.hello()查看复制集的信息
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | > db.hello(){ "topologyVersion" : { "processId" : ObjectId("63956ad40ce6275c36c30464"), "counter" : NumberLong(8) }, "hosts" : [ "192.168.137.24:27017", "192.168.137.25:27017", "192.168.137.26:27017" ], "passives" : [ "13.14.250.11:27017" ], "setName" : "abce_rs", "setVersion" : 2, "isWritablePrimary" : true, "secondary" : false, "primary" : "192.168.137.26:27017", "me" : "192.168.137.26:27017", "electionId" : ObjectId("7fffffff0000000000000005"), "lastWrite" : { "opTime" : { "ts" : Timestamp(1678089543, 8), "t" : NumberLong(5) }, "lastWriteDate" : ISODate("2023-03-06T07:59:03Z"), "majorityOpTime" : { "ts" : Timestamp(1678089543, 8), "t" : NumberLong(5) }, "majorityWriteDate" : ISODate("2023-03-06T07:59:03Z") }, "maxBsonObjectSize" : 16777216, "maxMessageSizeBytes" : 48000000, "maxWriteBatchSize" : 100000, "localTime" : ISODate("2023-03-06T07:59:03.595Z"), "logicalSessionTimeoutMinutes" : 30, "connectionId" : 1486170, "minWireVersion" : 0, "maxWireVersion" : 13, "readOnly" : false, "ok" : 1, "$clusterTime" : { "clusterTime" : Timestamp(1678089543, 8), "signature" : { "hash" : BinData(0,"5cRWwdv97PAUESoPYgMqCgfsWYk="), "keyId" : NumberLong("7161241075632308230") } }, "operationTime" : Timestamp(1678089543, 8)} |
(3)使用rs.remove()移除
1 2 | rs.remove("mongod3.example.net:27017")rs.remove("mongod3.example.net") |
2.使用rs.reconfig()
也可以通过重新构建复制集来移除节点。
从4.4版本开始，rs.reconfig()支持增加或移除可投票节点，一次只能移除一个节点。
(1)先关闭要移除的mongodb实例
1 | db.shutdownServer() |
(2)连接到复制集的primary节点
使用db.hello()查看复制集的信息
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | > db.hello(){ "topologyVersion" : { "processId" : ObjectId("63956ad40ce6275c36c30464"), "counter" : NumberLong(8) }, "hosts" : [ "192.168.137.24:27017", "192.168.137.25:27017", "192.168.137.26:27017" ], "passives" : [ "13.14.250.11:27017" ], "setName" : "abce_rs", "setVersion" : 2, "isWritablePrimary" : true, "secondary" : false, "primary" : "192.168.137.26:27017", "me" : "192.168.137.26:27017", "electionId" : ObjectId("7fffffff0000000000000005"), "lastWrite" : { "opTime" : { "ts" : Timestamp(1678089543, 8), "t" : NumberLong(5) }, "lastWriteDate" : ISODate("2023-03-06T07:59:03Z"), "majorityOpTime" : { "ts" : Timestamp(1678089543, 8), "t" : NumberLong(5) }, "majorityWriteDate" : ISODate("2023-03-06T07:59:03Z") }, "maxBsonObjectSize" : 16777216, "maxMessageSizeBytes" : 48000000, "maxWriteBatchSize" : 100000, "localTime" : ISODate("2023-03-06T07:59:03.595Z"), "logicalSessionTimeoutMinutes" : 30, "connectionId" : 1486170, "minWireVersion" : 0, "maxWireVersion" : 13, "readOnly" : false, "ok" : 1, "$clusterTime" : { "clusterTime" : Timestamp(1678089543, 8), "signature" : { "hash" : BinData(0,"5cRWwdv97PAUESoPYgMqCgfsWYk="), "keyId" : NumberLong("7161241075632308230") } }, "operationTime" : Timestamp(1678089543, 8)} |
(3)执行rs.conf()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | > rs.conf() { "_id" : "abce_rs", "version" : 2, "term" : 5, "members" : [ { "_id" : 0, "host" : "192.168.137.24:27017", "arbiterOnly" : false, "buildIndexes" : true, "hidden" : false, "priority" : 1, "tags" : { }, "secondaryDelaySecs" : NumberLong(0), "votes" : 1 }, { "_id" : 1, "host" : "192.168.137.25:27017", "arbiterOnly" : false, "buildIndexes" : true, "hidden" : false, "priority" : 1, "tags" : { }, "secondaryDelaySecs" : NumberLong(0), "votes" : 1 }, { "_id" : 2, "host" : "192.168.137.26:27017", "arbiterOnly" : false, "buildIndexes" : true, "hidden" : false, "priority" : 1, "tags" : { }, "secondaryDelaySecs" : NumberLong(0), "votes" : 1 }, { "_id" : 3, "host" : "13.14.250.11:27017", "arbiterOnly" : false, "buildIndexes" : true, "hidden" : false, "priority" : 0, "tags" : { }, "secondaryDelaySecs" : NumberLong(0), "votes" : 0 } ], "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("6361d6c6ba61e054186e592a") }} |
(3)保存当前的配置信息
1 | cfg = rs.conf() |
(4)修改配置信息
比如移除节点(_id为2)
1 | cfg.members.splice(2,1) |
(5)使用修改后的信息重载复制集的配置
1 | rs.reconfig(cfg) |
(6)确认
1 | rs.conf() |
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