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mongodb的高可用集群設計實戰

作者:  來源:  發布時間:2012-2-2 13:41:04  點擊:
在分片后新寫數據第一次:

mongos> db.elain.stats(); { "sharded" : true, "flags" : 1, "ns" : "elain.elain", "count" : 676496, "numExtents" : 12, "size" : 112500436, "storageSize" : 129179648, "totalIndexSize" : 47551616, "indexSizes" : { "_id_" : 21968912, "client_userid_1" : 25582704 }, "avgObjSize" : 166.29874529930703, "nindexes" : 2, "nchunks" : 8, "shards" : { "shard1" : { "ns" : "elain.elain", "count" : 0, "size" : 0, "storageSize" : 8192, "numExtents" : 1, "nindexes" : 2, "lastExtentSize" : 8192, "paddingFactor" : 1, "flags" : 1, "totalIndexSize" : 16352, "indexSizes" : { "_id_" : 8176, "client_userid_1" : 8176 }, "ok" : 1 }, "shard2" : { "ns" : "elain.elain", "count" : 676496, "size" : 112500436, "avgObjSize" : 166.29874529930703, "storageSize" : 129171456, "numExtents" : 11, "nindexes" : 2, "lastExtentSize" : 31322112, "paddingFactor" : 1, "flags" : 1, "totalIndexSize" : 47535264, "indexSizes" : { "_id_" : 21960736, "client_userid_1" : 25574528 }, "ok" : 1 } }, "ok" : 1 }

分片后新寫數據第二次:

mongos> db.elain.stats(); { "sharded" : true, "flags" : 1, "ns" : "elain.elain", "count" : 1189194, "numExtents" : 23, "size" : 194533928, "storageSize" : 252874752, "totalIndexSize" : 87262448, "indexSizes" : { "_id_" : 43692544, "client_userid_1" : 43569904 }, "avgObjSize" : 163.58468677103988, "nindexes" : 2, "nchunks" : 8, "shards" : { "shard1" : { "ns" : "elain.elain", "count" : 396370, "size" : 62195348, "avgObjSize" : 156.91234957236924, "storageSize" : 86114304, "numExtents" : 11, "nindexes" : 2, "lastExtentSize" : 20881408, "paddingFactor" : 1, "flags" : 1, "totalIndexSize" : 35949872, "indexSizes" : { "_id_" : 17954496, "client_userid_1" : 17995376 }, "ok" : 1 }, "shard2" : { "ns" : "elain.elain", "count" : 792824, "size" : 132338580, "avgObjSize" : 166.9205019020615, "storageSize" : 166760448, "numExtents" : 12, "nindexes" : 2, "lastExtentSize" : 37588992, "paddingFactor" : 1, "flags" : 1, "totalIndexSize" : 51312576, "indexSizes" : { "_id_" : 25738048, "client_userid_1" : 25574528 }, "ok" : 1 } }, "ok" : 1 }

分片后新寫數據第三次:

mongos> db.elain.stats(); { "sharded" : true, "flags" : 1, "ns" : "elain.elain", "count" : 1376876, "numExtents" : 23, "size" : 225576604, "storageSize" : 252874752, "totalIndexSize" : 100826432, "indexSizes" : { "_id_" : 50249696, "client_userid_1" : 50576736 }, "avgObjSize" : 163.83218532387812, "nindexes" : 2, "nchunks" : 10, "shards" : { "shard1" : { "ns" : "elain.elain", "count" : 494202, "size" : 77551984, "avgObjSize" : 156.92365469990003, "storageSize" : 86114304, "numExtents" : 11, "nindexes" : 2, "lastExtentSize" : 20881408, "paddingFactor" : 1, "flags" : 1, "totalIndexSize" : 42057344, "indexSizes" : { "_id_" : 21600992, "client_userid_1" : 20456352 }, "ok" : 1 }, "shard2" : { "ns" : "elain.elain", "count" : 882674, "size" : 148024620, "avgObjSize" : 167.70021548159343, "storageSize" : 166760448, "numExtents" : 12, "nindexes" : 2, "lastExtentSize" : 37588992, "paddingFactor" : 1, "flags" : 1, "totalIndexSize" : 58769088, "indexSizes" : { "_id_" : 28648704, "client_userid_1" : 30120384 }, "ok" : 1 } }, "ok" : 1 }

分片后新寫數據第四次(DOWN 掉md04的mongo服務)

mongos> db.elain.stats(); { "sharded" : true, "flags" : 1, "ns" : "elain.elain", "count" : 1686310, "numExtents" : 26, "size" : 275761376, "storageSize" : 353116160, "totalIndexSize" : 129033632, "indexSizes" : { "_id_" : 63265888, "client_userid_1" : 65767744 }, "avgObjSize" : 163.52946729842083, "nindexes" : 2, "nchunks" : 10, "shards" : { "shard1" : { "ns" : "elain.elain", "count" : 740264, "size" : 116213588, "avgObjSize" : 156.98938216636228, "storageSize" : 141246464, "numExtents" : 13, "nindexes" : 2, "lastExtentSize" : 30072832, "paddingFactor" : 1, "flags" : 1, "totalIndexSize" : 61810560, "indexSizes" : { "_id_" : 32556832, "client_userid_1" : 29253728 }, "ok" : 1 }, "shard2" : { "ns" : "elain.elain", "count" : 946046, "size" : 159547788, "avgObjSize" : 168.64696642657967, "storageSize" : 211869696, "numExtents" : 13, "nindexes" : 2, "lastExtentSize" : 45109248, "paddingFactor" : 1, "flags" : 1, "totalIndexSize" : 67223072, "indexSizes" : { "_id_" : 30709056, "client_userid_1" : 36514016 }, "ok" : 1 } }, "ok" : 1 }

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