today's leftovers
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APT keeps complaining that the HTTPS certificate cannot be validated?
Recently a few of my Ubuntu 20.04 and Debian 11 servers failed to run an apt update because it insisted that the HTTPS certificate for a repository could not be validated, while curl on the same system had no issues connecting. Join me on a deep dive into certificate validation and troubleshooting apt, digging into the C++ source code for apt and GnuTLS and in the end, it turned out to be my own fault due to permission on a folder. However, the error messages were totally unhelpful resolving the mysterious validation problem. This article was written over the period of a few days, chronologically during troubleshooting.
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“OpenBSD Mastery: Filesystems” Print Status
So, when will the print book be in stores?
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Link: X Window System Basics