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RedHat Main Version Changes
| Whats new in RHEL 7 |
| Kernel | 3.10.x (Maipo) |
| Init System | systemd (previous System V) + Unit files |
| Default file system | XFS, BTRFS deprecated |
| Firewall | iptables |
| Virtualization | Docker |
| RPM 4.11 |
| Python 2.7.x |
| PHP 5.4 |
| Perl 5.16.3 |
| Whats new in RHEL 8 |
| Kernel | 4.18.x (Ootpa) |
| Volume managing | Stratis |
| Network | NetworkManager |
| Firewall | nftables |
| Packaging | DNF (compatibility for YUM) |
| Groups | nfsnobody deprecated (⇒ nobody) |
| Virtualization | Podman |
| MySQL 8 / MariaDB 10.3 | |
| PostgreSQL 10 or 9.6 | |
| Cockpit default install | |
| RPM 4.14 |
| Python 3.x | Python 3.6 is going to be supported for the whole life cycle of RHEL 8 |
| PHP 7.2 | |
| Perl 5.26.3 |
| Whats new in RHEL 9 |
| Firewall | nftables |
| Security | SHA-1 for signatures restricted in DEFAULT crypto policy except for HMAC
SHA-1 not allowed in TLS, DTLS, SSH, IKEv2, DNSSEC, and Kerberos protocols |
| Perl 5.32.1 |
