CentOS

CentOS/RHEL do not generally ship the latest of everything but instead RH cherrypick the updates that should be backported to the version that RHEL ships. You can check the rpm changelog using e.g. `repoquery --changelog httpd-2.4.57-5.el9 | less` or visit the RH CVE pages for a longer explanation o...

Use `journalctl -u network` to see messages older than the ones that you see using status.

Because 7.5 - 7.8 are outdated and have been moved to vault. 7.9 is the current version and is on the CentOS mirror network, not on vault (because it's still alive). Around about July this year after 7.9 goes EOL, it too will get moved to vault.centos.org.

What are you trying to do? I do not think anything for 7.9.2009 should be on vault.centos.org at all as yet as it's still a live version. Only retired/dead versions of CentOS should be on vault and 7.9 is not either just yet.

Raise a bug on issues.redhat.com in the RHEL section where you can find "Stream" as an affected version. I checked the mirror and there are no java-21 packages there at all despite them being in RHEL 9.3

There are at least two new RHEL rebuilds to replace CentOS - pick either Rocky or Alma. Or if it fits within the terms of usage you could investigate running RHEL using a free Red Hat Developer Subscription - that allows up to 16 instances of RHEL itself but needs renewing every year to continue to ...

On that screen, hit 'e' to edit the top entry then use the arrow keys to move around and then delete the words 'rhgb' and 'quiet' from there. Now hit ctrl-X to continue booting with those parameters removed and you should see a lot of messages. Might want to get a video camera ready if it reboots au...

I don't think that's a valid syntax for --exclude=. Perhaps use --exclude-from=file and put your exclude patterns in that file, one per line.

Nothing provides that file on CentOS 7. Also, you appear to be attempting to install an ancient copy of scidavis - Fedora has 2.9 but the copy you're trying to install is 1.2.6. If this is a new set up then don't use CentOS 7, use something newer to start with. CentOS 7 dies in about 2 months time.

And did you install kmod-e1000e?