On 12/9/20 04:46, Andrea Biscuola wrote:
IMHO, if you based the most critical part of your infrastructure on CentOS,  
you did it
wrong.
[...]
We also just switched to CentOS 8 from CentOS 6 spending around 6 months of work
in doing so, but the most important part of our infrastructure is on paid RHEL
licenses (i.e. hypervisors).

Back in the Before Times and RHEL 7 was at .1 or .2 I had a persistent kernel 
oops on a set of RHEL7 hypervisors. Since we had fairly well tricked out RHEL 
support licenses I opened a ticket and within a couple of weeks I had 
confirmation that yep, there was a known issue, and there was a fix entering 
testing. I asked for access to the fixed kernel. I was told no. I asked if 
there was a particular kernel version I could deploy temporarily until the fix 
was released.  Silence. I asked for a bug ID so I could maybe use that to 
figure out what kernel I could deploy until RH released the fix.  Silence.  
Meanwhile hypervisors are oopsing on me because the project didn't want to 
deviate from the vendor baseline.

Then I learned about Centos Plus. I reprovisioned a machine, picked a Plus 
kernel, and happy sailing. The project decided functionality was superior to 
arbitrary compliance in this case. Rebuilt the rest of that rack to CentOS 7 
and never looked back. Or bothered renewing as many and that level of support 
because the one time I really could have used it it was effectively denied.

Sometimes basing the most critical part of your infrastructure on CentOS was 
the only way forward.
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