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Planned: Yes
Type: OS upgrade
Machine(s) involved: Europa
Successful: Yes, with added quirks
Start of maintenance: 04:09pm BST (03:09pm GMT/UTC)
End of maintenance: 05:20pm BST (04:20pm GMT/UTC)
Required maintenance period to upgrade the operating system of the server from Ubuntu 20.04 LTS (Focal Fossa) to 22.04 LTS (Jammy Jellyfish). The server was shut down at 4:09pm BST (3:09pm GMT/UTC) and service was restored at approx. 5:20pm BST (4:20pm GMT/UTC).
My reasoning for this was due to 20.04 rapidly approaching its primary end-of-life (EOL) cutoff date of April 2025. While it IS true that I would have had Expanded Security Maintenance (ESM) support until 2030 to fall back on, I would not like to linger, lest Canonical forget to patch more security vulnerabilities that come along in the next 6 years. Cough, Terrapin.
A full disk image was created prior to running the distribution upgrade utility for easy reversion to a functional system should anything have gone catastrophically wrong. Thankfully, the disk image was not needed and any issues were worked out once the upgrade to 22.04 LTS was completed.
Some quirks came out of this such as *increased* power consumption, even on the power-save power profile - the whole homelab now pulls on average 60-65W mostly idle compared to just 50W. I am unsure as to what has changed between releases to cause such an increase.
Overall the outcome was a massive success with some power consumption related oddities that I'm unable to fully understand. It could be something to do with the Intel power management driver.