如何替换分片副本集中的节点？ [英] How to replace node in sharded replica set?

问题描述

我得到了具有两个副本集的分片式mongodb设置：

I got sharded mongodb setup with two replica sets:

mongos> db.runCommand( { listShards : 1 } )
{
    "shards" : [
        {
            "_id" : "rs01",
            "host" : "rs01/10.133.250.140:27017,10.133.250.154:27017"
        },
        {
            "_id" : "rs02",
            "host" : "rs02/10.133.242.7:27017,10.133.242.8:27017"
        }
    ],
    "ok" : 1
}

节点10.133.250.140发生故障，我用另一个替换（IP地址已更改）。复制集的重新配置非常简单，只需rs.remove（）和rs.add（）
现在，我必须更新rs01分片的主机配置。正确的方法是什么？

Node 10.133.250.140 just went down, and I replaced it with another one (ip-address changed). Replica set reconfiguration was pretty easy, just rs.remove() and rs.add() Now I have to update host config for shard rs01. What is proper way to do it?

推荐答案

很多时候，您需要修改分片的主机字符串。更改主机字符串的最简单方法是运行更新操作。

Many times you would need to modify the host string for a shard. The simplest way to change host string is to run an update operation.

连接到mongos并执行此操作-

Connect to mongos and do this -

> use config
> db.shards.update({ "_id" : "rs01"},{$set : { "host" : "rs01/newip:27017,anothernewip:27017"} })

您可能需要重新启动所有mongos。

You might need to restart all mongos.

希望这会有所帮助：-）

Hope this helps :-)

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