April 2013
Beginner to intermediate
368 pages
6h 45m
Chinese
Content preview from VMWARE錦囊妙計第二版
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資源及 vCenter 管理（Resource and vCenter Management）
|
145
紅色
（
無效
）
當在叢集中沒有足夠的資源來處理所有的虛擬機器，這個叢集會變成無效的。因
為一些組態配置的議題，叢集也可能因此變為無效，像是停用了在 ESXi 主機上的
HA，或是在叢集中的 ESXi 主機沒有正確的在 vCenter 中離線就當機了（因此帶走
了必要的資源）。
如果一台或多台主機故障，叢集可能會變成無效的或是會發生過載。如果 vCenter
無法啟動虛擬機器、一個 HA 叢集容量低於配置的容錯移轉、或是如果主要的叢集
主機無法回應緊急的活動訊息（Heartbeat）檢查，叢集也會變成無效。
叢集無效會根據不同類型的故障決定，您可以試著增加更多資源、重新配置在 ESXi
上的 HA 或是關閉一些不需要的虛擬機器來解決這些問題。
以最快的速度補救這些無效的叢集是非常重要的，因為可以避免叢集失衡。
4.14 使用 ESXi CPU 與記憶體的熱添加及熱插拔
支援
問題
您想要加入更多 CPU 或記憶體到一台虛擬機器。
解決方案
使用 VMware ESXi 5.x 內的技術，您可以在運作中的虛擬機器加入 CPU、記憶體與
裝置。
討論
vSphere 5.x 企業版、企業加強版與進階版顧客，能夠以熱插拔（Hotplug）或熱添加
（Hot add）的方式加入 CPU、記憶體與裝置，而無須關閉虛擬機器。這項技術展現了
VMware 在產品上作的努力，以減少執行關鍵任務程式的伺服器停機時間。
ESXi 5.x ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.