Boot failed after yum update

[GabboR]

Hi. I restarted my Centos 7.7 machine after a partial yum update (there was a blackout during it) and now the machine can't boot anymore.

It reports some errors:
1. Failed to start Virtual Machine and Container Registration Service
2. Failed to start Login Service
3. Failed to start Disk Manager
4. Failed to start Authorization Manager
5. Failed to start RealtimeKit Scheduling Policy Service
6. Failed to start Account Service
7. Failed to start Modem Manager

Kernel version: 3.10.0-1062.4.3.e17.x86_64

Can you please help me?
Thanks.

[TrevorH]

Back up your important data.

You can try following the instructions on https://wiki.centos.org/HowTos/Cleaning ... tePackages to clean up and recover but a) don't forget the backups and b) it might not work and c) don't forget the backups!

[GabboR]

Thanks for you support!

Centos didn't find any duplicated packages and I made a complete yum update but I can't still boot

[GabboR]

Now Centos reports:
SELinux targeted policy relabel is required

and then it restarts automatically.

[GabboR]

If I add selinux=0 to the kernel boot line it boots properly.

How I can fix this issue?
Thanks.

[TrevorH]

Boot in permissive mode, edit the config file and change that to permissive, touch /.autorelabel and then reboot again. That will relabel all files on your system and will take a while. Once it's complete you should be able to switch the config file back to enforcing and reboot again.

[GabboR]

My Selinux config is already in permissive mode but I can't boot without selinux=0 flag.

It's very strange.

[GabboR]

sudo yum reinstall selinux-policy-targeted

Finally fixed the problem.

Thanks a lot for your support