Centos 8 Compatiblity I can report some further findings:
With
2.10.2.73 installed, I was unable to activate the license (even offline activation) . However when I updated to 3.0.0.100, I could activate my license fine.
3.0.0.100 seems to core dump regularly, in particular after hitting 'finish' when editing a backup plan. The cbbWebAccess process locked solid the once and need a kill -9 to renable the web interface.
I uninstalled 3.0.0.100, and then managed to cleanly install
2.10.2.73 without error. I suspect, now that I had manually installed the dependency libnsl various post install scripts executing cbb binaries now succeeded fine. So, possibly just need to add libnsl as a published dependency of the RPM package.
I'm still experimenting with various backup plans against local storage and BackBlaze B2, early days as my dataset is large, but appears to be mostly behaving thus far. I may have seen a handful of files it gets stuck on though...