是否可以从集群中删除两个节点？|Nutanix社区

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Get a free certification exam when you complete a training course now through August 16! <\/strong><\/h3>
\u00a0<\/p>
Level up your Nutanix skills and get certified for free with Nutanix University Summer School! For the next two months, anyone who completes one of the following courses - whether it\u2019s online or in person - will also receive a FREE certification exam voucher.<\/span><\/p>
Eligible courses:<\/strong><\/p>
\t
Enterprise Cloud Administration<\/span><\/p>\t<\/li>\t
\t
Nutanix Data Services Administration<\/span><\/p>\t<\/li>\t
\t
Nutanix End User Computing Administration<\/span><\/p>\t<\/li>\t
\t
Nutanix Database Management & Automation<\/span><\/p>\t<\/li>\t
\t
Nutanix Multicloud Automation Administration<\/span><\/p>\t<\/li><\/ul>
\u00a0<\/p>
Take this opportunity to invest in your career and grow your skill set.\u00a0<\/span><\/p>
\u00a0<\/h3>
Get started today!<\/a><\/h3>
\u00a0<\/p>
Thanks for waiting to everyone who got our sneak peek of this last week!\u00a0\ud83d\ude09<\/p>
\u00a0<\/p>
Terms and Conditions<\/strong><\/em><\/p>
\t
The exam voucher will be provided to you after you have completed the course. Self-paced online student\u2019s vouchers will be assigned through the Learning Plan within 24-hours after the completion of the course.<\/span><\/em><\/p>\t<\/li>\t
\t
You must complete the course between June 14, 2022 and August 16, 2022.\u00a0<\/span><\/em><\/p>\t<\/li>\t
\t
For online students, your exam voucher must be redeemed by 8\/23\/22. For instructor-led students, your exam voucher must be redeemed 6 months after you complete the course.\u00a0<\/span><\/em><\/p>\t<\/li>\t
\t
The exam voucher code can only be used once.<\/span><\/em><\/p>\t<\/li>\t
\t
You will receive one (1) NCP exam voucher for each class completed. The voucher can be used on any NCP exam.\u00a0\u00a0<\/span><\/em><\/p>\t<\/li><\/ul>
\u00a0<\/p>
This article was written by Karlie Beil, Customer Marketing Specialist.\u00a0<\/p><\/div><\/div><\/section>
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是否可以从集群中删除两个节点？

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是否可以从集群中删除两个节点？

1年前
2021年1月19日

1回复

169次观点

s

辛格克

冒险家

3个答复

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？

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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"}">
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AHV

节点

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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阿罗纳

Nutanix员工

433个答复

1年前
2021年1月20日

回答

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？还是要进行维护？

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，一个节点可以下降（这称为容错）。一旦节点重新加入群集，元数据就会重建，回收弹性，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，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节点配置，环境必须符合某些条件。绝不建议用于通用的两节点群集，但是它具有其用例（ROBO实施和其他需要较低成本但高弹性选择的情况）。

看看这些：

Prism Web控制台指南：两节点群集
 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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