CentOS

After no hints, I assumed bugs and filed bugzilla reports.

my CentOS 8 machines currently have installed: VirtualBox-6.1.x86_64 6.1.8_137981_el8-1 virtualbox I used dnf install VirtualBox-6.1 My virtualbox repo looks like: [virtualbox] name=Oracle Linux / RHEL / CentOS-$releasever / $basearch - VirtualBox baseurl=http://download.virtualbox.org/virtualbox/rp...

Or it is just me, or maybe is epel has pre-release 8.2 packages (or perhaps hasn't released 8.1)?? I just tried to install (available) ddclient to my updated 8.1 machine - $ sudo dnf install ddclient Last metadata expiration check: 0:00:31 ago on Fri 22 May 2020 12:49:30 PM EDT. Error: Problem: conf...

When it bombs, what does journalctl -xe say about it? Any hints in /var/log/maillog ? What changed right before this started to crash?
- just ideas

I can't remember quite how I found the problem with mine, but your answer is in logs on your machine.

I tried to dnf update 2 machines and got this from both: Error: Problem 1: cannot install the best update candidate for package clamav-lib-0.102.2-4.epel8.playground.x86_64 - nothing provides libprelude.so.28()(64bit) needed by clamav-lib-0.102.2-9.epel8.playground.x86_64 Problem 2: cannot install t...

Have you looked at Activities/System Monitor/Resources (if you're running Gnome) - real time graphs there can help. You did supply that you were running wired & wifi - Is there any chance those transfers are going via the wifi? Are you running LAN and wifi simultaneously? (shouldn't be) If cable plu...

And if as pjsj2 inquired, it was compromised - there is NO coming back from that.

I don't see a fix for this as even within folders permissions often differ by file. As a last-ditch attempt to avoid a rebuild, you might try " yum reinstall \*.\* " - it's going to take a while. You'll have to do it on each machine for which groups were changed. If that followed by a reboot doesn't...

When I messed up permissions badly and yum reinstall didn't fix it, I wound up doing a clean system install. I didn't want to, but it fixed the problem.

Well - I had all the tables from sept 8 which I copied in and rebooted the server. I now cannot even login - the tables apparently aren't constructed in a way the program can access them. None of the only 3 user ids/passwords work. I tried yum re-install cacti which didn't help. The hope was to re-t...