mongodb手动迁移chunk脚本

需求：emperor中的data_edit_log.45f7d791-f9df-4710-82be-6708479a1126集合只落到了rs06分片，需要平均到各个分片中去

use admin
var origin_rs="rs06";
var namespace = "emperor.data_edit_log.45f7d791-f9df-4710-82be-6708479a1126";
var cursor = db.getSiblingDB("config").chunks.find({ns:namespace,shard:origin_rs});
var count=-1;
var shServer = [ "rs01", "rs02", "rs03", "rs04", "rs05", "rs07", "rs08",origin_rs];
while (cursor.hasNext()) {
    count++
    var chunk = cursor.next();
    if(shServer[count]==origin_rs){
        print(count,shServer[count])
        count=0;
        continue;
    }
    var ret = db.runCommand({moveChunk :namespace, find : chunk.min, to : shServer[count]});
    printjson(ret);
}

执行完后检查分片分布情况：

use emperor

db.getCollection("data_edit_log.45f7d791-f9df-4710-82be-6708479a1126").getShardDistribution()