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解决了

是否可以从集群中删除两个节点？

  • 2021年1月19日
  • 1回复
  • 229意见
s
徽章

我有一个带有4个主机和4个街区的Nutanix群集。

是否可以从群集中删除两个节点？

图标

最好的答案阿罗纳2021年1月20日，02:10

Hi SinghK,<\/p>

Are you looking to remove the nodes from the cluster permanently i.e. turn a four-nodes cluster into two-nodes one? Or is this for maintenance?<\/p>

To give you a bit of an overview, the healthy minimum is 3 nodes. In a 3-nodes cluster, one node can be down (this is called fault tolerance). Once the node re-joins the cluster, the metadata is rebuilt, resilience is recovered and the system returns to a healthy state.<\/p>

If you are looking to downsize the cluster to a two-nodes one then you would need to have the nodes re-imaged into a two-nodes configuration, deploy a Witness VM (not mandatory but is very strongly recommended). Two-nodes configuration is supported on a limited range of hardware and the environment must meet certain criteria. By no means a two-node cluster is recommended for general purpose however it has its use cases (ROBO implementations and other situations that require a lower cost yet high resiliency option).<\/p>

Take a look at these:<\/p>

Prism Web Console Guide: Two-Node Clusters<\/a>
KB-5943 Single-Node and Two-Node Cluster FAQ<\/a><\/p>","className":"post__content__best_answer"}">

查看原件
I have a Nutanix cluster with 4 hosts and 4 blocks.\u00a0<\/p>

Is it possible to remove two nodes from Cluster ?<\/p>","quoteUsername":"SinghK","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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1回复

阿罗纳
秩
UserLevel 6
徽章 +5

嗨，辛格，

您是否想永久从群集中删除节点，即将四节点群集变成两个节点？还是要维护？

为了给您一些概述，健康的最低限度为3个节点。在一个3节点群集中，一个节点可以降低（这称为容错）。一旦节点重新加入群集，重建元数据，回收了弹性，系统恢复到健康状态。

如果您希望将群集尺寸缩小到两个节点，那么您需要将节点重新成像为两个节点配置，而要部署证人VM（不是强制性的，但非常强烈建议）。在有限的硬件范围内支持两个节点配置，并且环境必须符合某些条件。绝不建议使用两个节点群集出于通用目的，但是它具有其用例（ROBO实施和其他需要较低成本但较高弹性选项的情况）。

看看这些：

Prism Web控制台指南：两个节点群集
KB-5943单节和两节点群集常见问题

Hi SinghK,<\/p>

Are you looking to remove the nodes from the cluster permanently i.e. turn a four-nodes cluster into two-nodes one? Or is this for maintenance?<\/p>

To give you a bit of an overview, the healthy minimum is 3 nodes. In a 3-nodes cluster, one node can be down (this is called fault tolerance). Once the node re-joins the cluster, the metadata is rebuilt, resilience is recovered and the system returns to a healthy state.<\/p>

If you are looking to downsize the cluster to a two-nodes one then you would need to have the nodes re-imaged into a two-nodes configuration, deploy a Witness VM (not mandatory but is very strongly recommended). Two-nodes configuration is supported on a limited range of hardware and the environment must meet certain criteria. By no means a two-node cluster is recommended for general purpose however it has its use cases (ROBO implementations and other situations that require a lower cost yet high resiliency option).<\/p>

Take a look at these:<\/p>

Prism Web Console Guide: Two-Node Clusters<\/a>
KB-5943 Single-Node and Two-Node Cluster FAQ<\/a><\/p>","quoteUsername":"Alona","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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