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我们现在有一套副本集的mongodb,是在两地的机房,由于资源有限,
A地有1个primary和1个secondary,
B地有2个secondary和1个arbiter,
以前从来没考虑过两地分布似乎不管怎样都不算是高可用,因为必然有一边是少数节点。
现在B机房计划性搬迁,就面临这个问题,B地直接下电,A地2/5节点,都会变成slave,影响业务。我计划先在A地add一个Arbiter2,然后remove掉B地的arbiter,这样B地下电是不是就完全没影响了。
另外想请问下两地部署的情况副本集有什么最佳结构吗?
感谢。


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