如何在Kubernetes上设置Mongo副本？ [英] How do you set-up Mongo replica set on Kubernetes?

问题描述

我想在Kubernetes上设置一个Mongo副本。我想要三个副本。这意味着我需要启动3个实例。

我应该启动三个pod，每个podo都使用Mongo，并将服务指向主要的？或者我应该使用复制控制器吗？

解决方案

此答案已过期。我写了一个详细的分步教程这里使用更多的最新方法。我强烈建议您阅读全文。

简而言之，您运行一个sidecar应用程序为您配置副本集，并使用每个实例的服务或者ping荚IP地址的K8s API。

示例：这只适用于Google Cloud。您将需要对其他平台进行修改，特别是围绕卷：

1. 按照 https://github.com/leportlabs/mongo-k8s-sidecar.git
   
   
   
   
   • git clone https://github.com/leportlabs/mongo-k8s-sidecar.git
   
   
   • cd mongo-k8s-sidecar / example /
   
   
   • make add-replica ENV = GoogleCloudPlatform （这样做三次）
   
   


2. 通过服务连接到副本集。
   
   
   
   
   • mongodb：// mongo-1，mongo-2，mongo-3：27017 / dbname_？
   
   


3. 您还可以使用原始pod IP地址，而不是为每个pod创建一个服务
   
   
   
   
   • 使用此 https://github.com/ thesandlord / kubernetes-pod-ip-finder.git
   
   

I'd like to set-up a Mongo replica set on Kubernetes. I'd like to have three replicas. This means I'd need to start 3 instances.

Should I start three pods, with Mongo in each one, and use the service the point to the primary? Or should I used a replication controller somehow?

解决方案

This answer is out of date. I wrote a detailed step-by-step tutorial here using more up to date methods. I highly recommend reading it all.

In a nutshell, you run a sidecar app to configure the replica set for you, and either use a service per instance or ping the K8s API for the pod IP addresses.

Example: This will only work in Google Cloud. You will need to make modifications for other platforms, particularly around the volumes:

1. Follow the example in https://github.com/leportlabs/mongo-k8s-sidecar.git
   • git clone https://github.com/leportlabs/mongo-k8s-sidecar.git
   • cd mongo-k8s-sidecar/example/
   • make add-replica ENV=GoogleCloudPlatform (do this three times)
2. Connect to the replica set via services.
   • mongodb://mongo-1,mongo-2,mongo-3:27017/dbname_?
3. You can also use the raw pod IP addresses instead of creating a service per pod
   • Use this https://github.com/thesandlord/kubernetes-pod-ip-finder.git

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