Reference: https://endoflife.date/debian
* RHEL / CentOS
- RHEL / CentOS 5: 2020-11-30 †
- RHEL / CentOS 6: 2024-06-30
- RHEL / CentOS 7: 2026-06-30
- RHEL / CentOS 8 / AlmaLinux 8: 2029-03-01
+ For RHEL, consider the end of "maintenance support", not the end of "extended life phase".
+ RHEL / CentOS 5: 2017-03-31 †
+ RHEL / CentOS 6: 2020-11-30 †
+ RHEL / CentOS 7: 2024-06-30
+ RHEL / CentOS 8 / AlmaLinux 8: 2029-05-31
RHEL / AlmaLinux 9: 2032-05-31
Reference: https://en.wikipedia.org/wiki/Red_Hat_Enterprise_Linux#Version_history_and_timeline
https://access.redhat.com/support/policy/updates/errata