It is recommended to disable firewalld and fapolicyd:
systemctl disable firewalld --now systemctl disable fapolicyd.service
If enabled, it is required to disable nm-cloud-setup and reboot the node:
systemctl disable nm-cloud-setup.service nm-cloud-setup.timer reboot
If you are using a dedicated partition (/var/lib/rancher) to run K3s make sure to NOT have mounted it using noexec flag inside /etc/fstab file.
If you have FIPS mode enabled is necessary to disable it otherwise some of our workloads running in K3s will crash at startup. To check if FIPS is enabled run:
sysctl crypto.fips_enabled
In order to disable, please refer to the steps as mentioned in below article:
https://www.thegeekdiary.com/how-to-disable-fips-mode-on-centos-rhel-7/
