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Move video to top and adjust wording

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Joshua Boniface 2023-09-17 13:05:04 -04:00
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docs/architecture/fencing.md
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title: Fencing
---
PVC features a fencing system to provide automatic recovery of nodes from certain failure scenarios. This document details the fencing process, limitations, and expectations, as well as how this factors into georedundant designs.
PVC features a fencing system to provide automatic recovery of nodes from certain failure scenarios. This document details the fencing process, limitations, and expectations.
You can also view a video demonstration of the fencing process in action here:
[![Fencing Demonstration](https://img.youtube.com/vi/ZnhJ91-5y1Q/hqdefault.jpg)](https://youtu.be/ZnhJ91-5y1Q)
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Fencing can be temporarily disabled by setting the cluster maintenance mode to `on` and resumed by setting it `off`. This can be useful during maintenance events however the administrator should be careful to `flush` any affected nodes of running VMs first to avoid trouble.
You can view a demonstration of the fencing process in action here:
[![Fencing Demonstration](https://img.youtube.com/vi/ZnhJ91-5y1Q/hqdefault.jpg)](https://youtu.be/ZnhJ91-5y1Q)
## IPMI Configuration
For fencing to be enabled, several configurations must be correctly set.