CentOS

I suspect this is caused by removal of RC4 encryption from default crypto policy in RHEL/CentOS 8.

Try to issue:
as root to enable RC4 ciphers, reboot and check if it helped.

X550-T is known to experience some issues getting 2.5 & 5 Gbps link speeds depending on the link partner and cable quality. And the omission of full support to "force" these link speeds is not helping here as well. Fortunately recent ixgbe driver updates from Intel on sourceforge should already incl...

NetworkManager mostly works. The biggest exception is running the router with it, the number of routing table updates and notifications it has to process slows it down to a crawl. It basically even cannot display network interfaces with full IPv6 BGP feed (and IPv6 routing table is 8-9 times smaller...

rp-pppoe has been integrated into ppp package:
Just use it as before. I've basically configured my WAN the same way as I did in CentOS 7, using nmcli.

I would also look at what's in /etc/nsswitch.conf in passwd: line and in /etc/pam.d/passwd and any files referenced there (by include or substack).

Is there any chance there is a password quality checker (there usually is) and you are trying to set low quality password?

Is it possible that /, /tmp or /var/tmp were full? Some of the services you use for authentication may need some temp space in one of these places and may fail if it is not available...

Yes, it looks like clevis-dracut causes some interference with regular NetworkManager connections. I have similar problem but with 802.1x, which does not start as the interface was brought up earlier...

I believe you need to install NetworkManager-config-server package to achieve this.

I am using sed in %post script without a problem. Have you installed sed package? What is the error logged for sed invocation? I am doing: set -x exec >& /root/post.log at the very beginning of my %post script to get the idea about what is going on and see any failures. As for extra repositories I a...

Please check what /sys/class/net/p5p1/device/sriov_totalvfs lists. You cannot create more VFs than the number listed in that file. For example I have Intel's 82576 based NIC which only allows 7 VFs per PF: vesemir:~> cat /sys/class/net/enp2s0f0/device/sriov_totalvfs 7 But my X553 based LOM can do 63...