如何修改副本集配置? [英] How to modify replica set config?

问题描述

我有一个 mongo 2 节点集群正在运行，使用此副本集配置.

I have a mongo 2 node cluster running, with this replica set config.

config = {_id: "repl1", members:[
{_id: 0, host: 'localhost:15000'},
{_id: 1, host: '192.168.2.100:15000'}]
}

我必须将这两个节点移动到新服务器上.我已将所有内容从旧服务器复制到新服务器，但由于第二个节点上的 ip 更改，我在重新配置副本配置时遇到了问题.

I have to move these both nodes on to new servers. I have copied everything from old to new servers, but I'm running into issues while reconfiguring the replica config due to ip change on the 2nd node.

我已经试过了.

config = {_id: "repl1", members:[
 {_id: 0, host: 'localhost:15000'},
{_id: 1, host: '192.168.2.200:15000'}]
}
   rs.reconfig(config)  
   {


"startupStatus" : 1,
"errmsg" : "loading local.system.replset config (LOADINGCONFIG)",
"ok" : 0
}

它显示了上面的消息，但没有发生变化.

It shows above message, but change is not happening.

我也尝试更改副本集名称但指向相同的数据目录.我收到以下错误:

I also tried changing replica set name but pointing to the same data dirs. I am getting the following error:

rs.initiate() 
{
"errmsg" : "local.oplog.rs is not empty on the initiating member. cannot initiate.",
"ok" : 0
}

更改 IP 但将数据保留在第二个节点上的正确步骤是什么，或者我是否需要重新创建/重新同步第二个节点?

What are the right steps to change the IP but keeping the data on the 2nd node, or do i need to recreate/resync the 2nd node?

推荐答案

好吧，我遇到了同样的问题.

Well , I had the same problem.

我不得不删除所有复制和 oplog.

I had to delete all replication and oplog.

use local
db.dropDatabase()

用新的集合名称重启你的 mongo

restart your mongo with new set name

config = {_id: "repl1", members:[
{_id: 0, host: 'localhost:15000'},
{_id: 1, host: '192.168.2.100:15000'}]
}

rs.initiate(config)

我希望这对你也有用

这篇关于如何修改副本集配置?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！