To convert your CentOS8 operating system to AlmaLinux do the following: -Make a backup of the system. -Disable Secure Boot because AlmaLinux doesn’t support it yet. -Download the almalinux-deploy.sh script: run the system update and upgrade command In CentOS and run the system update and upgrade command. # sudo dnf update # sudo dnf upgrade ..
CentOS 8 uses firewalld.You can see all zones by running the following ls command: # ls -l /usr/lib/firewalld/zones/ total 36 -rw-r–r–. 1 root root 299 Nov 8 11:48 block.xml -rw-r–r–. 1 root root 293 Nov 8 11:48 dmz.xml -rw-r–r–. 1 root root 291 Nov 8 11:48 drop.xml -rw-r–r–. 1 root root 304 Nov 8 11:48 ..