VMware环境中的AppFabric缓存 [英] AppFabric caching in VMware environments

问题描述

在虚拟环境中工作，定期移动VM以获得最佳资源，这意味着缓存服务器在移动过程中暂时不可用。这可能需要15秒，平均到一分钟。我猜这个不可用的
导致时间敏感的集群运行状况算法出现问题。

查看DistributedCacheService.exe.config，有一个名为fabric\section的配置元素" param" \ClusterStableNodeUpInterval，其值由安装向导设置为10. 

MSDN表示通常不应触及此值，但此值以秒表示，毫秒或其他时间单位？

我们应该如何期望AppFabric在虚拟环境中工作，具有动态资源控制？

非常感谢，

解决方案

如果这是计划活动，您可以一次关闭一个节点而不是多个节点。始终先带缓存服务 使用cmdlet停止CacheHost。同时确保群集始终满足这些条件：

1。如果使用SQL作为群集配置存储，则具有SQL Server的主机永远不会关闭或者您已设置镜像：
http://msdn.microsoft.com/en-us/library/ee790826.aspx

2。如果您使用XML作为群集配置存储，则大多数主机主机始终处于运行状态。

3。如果使用高可用性，请使用以下建议：
http://msdn.microsoft.com/en -us /库/ ee790974.aspx

Hi,

Working in a virtual environment, where VMs are periodically moved for optimal resources, means that cache servers are temporarily unavailable whilst the move takes place. This can take 15 secs on average, to a minute. I guess that this unavailability could cause problems in time-sensitive cluster health algorithms.

Looking at the DistributedCacheService.exe.config, there is a configuration element called fabric\section "param"\ClusterStableNodeUpInterval, whose value was set to 10 by the installation wizard. 

MSDN says that this value should not normally be touched, but is this value expressed in seconds, milliseconds or another time unit?

How should we expect AppFabric to work in a virtual environment, with dynamic resource control?

Many thanks,

解决方案

If this is a planned activity, you can bring one node down at a time and not multiple. Always first bring the cache service  down with cmdlet Stop-CacheHost. Also make sure these conditions are always satisfied for the cluster to remain up:

1. If using SQL as cluster configuration store, the host with SQL Server never goes down or you have setup mirroring: http://msdn.microsoft.com/en-us/library/ee790826.aspx

2. If you are using XML as cluster config store, majority of lead hosts are always up.

3. If using High availability, employ these recommendations: http://msdn.microsoft.com/en-us/library/ee790974.aspx

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