Difference: CentOS7Upgrade (3 vs. 4)

Revision 42020-09-28 - WilliamSeligman

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META TOPICPARENT name="WilliamSeligman"

CentOS 7 upgrades

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  If a system is attached to a BIOS-level KVM-over-IP (KVM = keyboard-video-monitor; BIOS-level = I can interact with the system while it boots), then I can upgrade the system remotely. There have been persistent hardware issues with this approach, but we're still trying.
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Note that this approach may require your group to spend some money for the hardware to access your systems.
 
Network boot

I'm working on scripts that would automatically upgrade a system to CentOS 7 if the system was booted over the network. I'm still validating this approach. It would also require someone to manually intervene at a system's console as it's being rebooted.

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  The difference between CentOS and Scientfic Linux are a few configuration files that are only relevant if a given system is physically located at either Fermilab or CERN.
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As a measure of insignificance of this difference, there will be no "Scientific Linux 8". The Scientific Linux project ends with SL7, and suggests that its users move to CentOS.
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As a measure of insignificance of this difference, there will be no "Scientific Linux 8." The Scientific Linux project ends with SL7, and suggests that its users move to CentOS.
 

Why not CentOS 8?

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What about Ubuntu?

None of the national labs have adopted the Ubuntu distribution for large-scale physics-analysis tasks.

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What needs to be upgraded.

These are the lists of systems on the Nevis Linux cluster that need to be upgraded, organized by research group. If a system's name is bold, then it is exposed to the outside world and is vulnerable to being hacked.

ATLAS

These systems currently run SL6:

  • xenia
  • xenia2
  • xeniaNN, where NN goes from 01 to 22

The following systems are already running CentOS 7:

  • kolya
  • xenia00

DOE

These systems currently run SL6:

  • shang

Electronics design

This system is still running Scientific Linux 5:

  • elecsim

These systems currently run SL6:

  • elecsim3
  • elecsim4
  • license

The following systems are already running CentOS 7:

  • elecdesign

Neutrino

These systems currently run SL6:

  • houston
  • bleeker
  • riverside
  • westside
  • kennelNN, where NN goes from 00 to 21 (with some gaps)

The following systems are already running CentOS 7:

  • amsterdam

VERITAS/CTA

These systems currently run SL6:

  • tehanu
  • vetch
  • ged
  • serret
 
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