I ran into this issue last night, when my Ubuntu 20.04 LTS automatically upgraded itself, it installed a new kernel and I lost control of the system, it would just crash a few minutes after booting. I tried it again today with a fresh Discourse install and as soon as I upgraded the system it started…

The question being is there a way to start the system without having it start Discourse/docker? Running on AWS Lightsail. The only other option is to rebuild the whole system again which is PITA right now given the backup/restore issues I’m facing. EDIT: This is what I found, hit or miss depending …

I had this happen on two EC2 instances as well. They went down at 5AM EDT for a reboot and never came back up.

Per the link this affects people running canonical “cloud kernels” in ubuntu machines. They removed a patch that affects OverlayFS. While Canonical rolls a fix people can try a different kernel version or using Debian / other distro as a workaround.

I was able to interrupt the cycle using a quick SSH about 15 seconds after it starts to disable the docker/container services. Downgraded the kernel to 5.4 and it seems to be working [image] How to downgrade the kernel on Ubuntu 20.04 to the 5.4 (LTS) version …

[image] RBoy: I was able to interrupt the cycle using a quick SSH about 15 seconds after it starts to disable the docker/container services. Downgraded the kernel to 5.4 and it seems to be working How to downgrade the kernel on Ubuntu 20.04 to the 5.4 (LTS) version - Tutorials - Ubuntu Communit…

I have written up a tutorial on how to avoid kernel oops! issues like this that crash your server or keep it from coming back up. I put the tutorial on my Discourse site, since that seemed convenient to me. My site has nothing to do with tech, though. So I unlisted the topic but published it to HTM…

Ubuntu 20.04 kernel update with docker causing a crash on EC2 and Lightsail

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spamless (Dallman Ross) June 14, 2022, 1:43am 8

You simply can revert to the previous kernel and the machine is restored. Or update to the current, fixed kernel, which came out on Thursday.

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Ubuntu 20.04 kernel update with docker causing a crash on EC2 and Lightsail

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