As you might be aware, CentOS 8 has reached End of Life on December 31st 2021. Furthermore, yesterday, CentOS 8 actually disappeared from the distribution mirrors. While we had made plans for this, we failed to execute those plans until now. This means we will need to switch build environments on some of our supported branches (Recursor and Authoritative 4.4/4.5/4.6, and dnsdist 1.5/1.6/1.7) mid release cycle. We are making those changes this week.
In mid-2021, we did extensive testing of building and running on the various CentOS alternatives, and came to one very clear conclusion – while the resulting binaries were not always bit for bit identical, the differences were uninteresting. Because of this, we believe users will not notice this change in our build environment at all and can continue to run our packages on their RHEL-derivative of choice.
However, just in case incompatible changes pop up, we are not switching the 7 build environment at this time.