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You're reading from Mastering Proxmox, - Third Edition

Product typeBook

Published inNov 2017

PublisherPackt

ISBN-139781788397605

Edition3rd Edition

Tools

Ceph Proxmox

Concepts

Cloud Computing

Author (1)

Wasim Ahmed

Debugging the Proxmox installation

Debugging features are part of any good operating system. Proxmox has debugging features that will help you during a failed installation. Some common reasons are unsupported hardware, conflicts between devices, ISO image errors, and so on. Debugging mode logs and displays installation activities in real time. When the standard installation fails, we can start the Proxmox installation in debug mode from the main installation interface, as shown in the following screenshot:

The debug installation mode will drop us in the prompt, as shown in the following screenshot:

To start the installation, we need to press Ctrl + D. If there is an error during the installation, we can simply press Ctrl + C to get back to this console to continue with our investigation. From the console, we can check the installation log using the following command:

# cat /tmp/install.log

At times, it may be necessary to edit the loader information when normal booting does not function. This is a common case when Proxmox is unable to show the video output due to UEFI or a nonsupported resolution. In such cases, the booting process may hang. From the main installation menu, we can press E to enter edit mode to change the loader information, as shown in the following screenshot:

One way to continue with booting is to add the nomodeset argument by editing the loader. The loader should look as follows after the edit:

linux/boot/linux26 ro ramdisk_size=16777216 rw quiet nomodeset

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Published in: Nov 2017Publisher: PacktISBN-13: 9781788397605

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Author (1)

Wasim Ahmed

Wasim Ahmed, born in Bangladesh and now a citizen of Canada, is a veteran of the IT world. He first came into close contact with computers in 1992 and never looked back. Wasim has a deep understanding of networks, virtualization, big data storage, and network security. By profession, Wasim is the CEO of a global IT support and cloud service provider based in Calgary, Alberta. He serves many companies and organizations through his company on a daily basis. Wasim's strength comes from his experience, which comes from learning and serving continually. Wasim strives to find the most effective solution at the most competitive price. He has built over 20 enterprise production virtual infrastructures using Proxmox and the Ceph storage system. Wasim and his team are notorious for not simply accepting a technology based on its description alone, but putting it through rigorous testing to check its validity. Any new technology that his company provides goes through months of continuous testing before it is accepted. Proxmox made the cut superbly.
Read more about Wasim Ahmed

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