How do I update CentOS 6.3 to 6.10? [closed]
Solution 1:
No, continuing to use CentOS 6 is not a responsible thing to do. It is end of life and has security vulnerabilities. And perhaps its PKI no longer being maintained is contributing to your TLS problems.
Reinstall a newer version of RHEL or a rebuild. RHEL, Rocky, Alma, Oracle EL. CentOS is now CentOS Stream, which as a beta of RHEL might not be exactly what you want, but is an option.