SELinux bootup error message

That is expected. sudo grep -v '#' /etc/selinux/semanage.conf

That is what my system looks like. Is this actually causing any problems? You could add selinux=0 to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub if it is causing problems or bothering you.

Quote from mbourd25

Looking at /etc/default/grub, this is my GRUB_CMDLINE_LINUX_DEFAULT="quiet".

Yep, that is normal. If you want the selinux warning to go away, add selinux=0 to that and run update-grub.

Quote from mbourd25

The other day, it was the first time I rebooted my system in over 4 months. That's when I noticed that error message.

My servers are headless and I don't watch them boot. If I'm not having problems, I don't go looking for messages.

Quote from mbourd25

I updated the grub file, /etc/default/grub, to have command selinux=0 in line, GRUB_CMDLINE_LINUX_DEFAULT="quiet selinux=0".

Make sure to run sudo update-grub after making any change to /etc/default/grub.

Just for adding information.

I am doing tests in a vm and I have received the exact same message as the OP.

The only thing this vm has installed is omvextras, openmediavault-kernel and the proxmox 5.19 kernel.

I haven't even configured anything else in the GUI other than the fixed IP on the network interface.

The only extraordinary action has been to try to make a script run at startup using crontab -e and adding the corresponding line to the generated file.

It is a clean installation.

The interesting thing is that Selinux is installed and with the same configuration in /etc/selinux/semanage.conf

Quote from Draky50110

And not solved : I put "selinux=0" to the line, updated Grub and rebooted and still the error message.

Main problem : all connections disabled, I can"t SSH ord access WebUI

Only using monitor+keyboard on the machine.

So I solved doing this :

- selinux=0 is not working, "getenforce" is not here.
Why ? Because... selinux is not installed.

Yes, it is real : OMV needs a policy file which is not existing.

I then installed selinux-policy-dev package to see the result.

It succeed... not totally but it created /etc/selinux/config file.

I edited this file and changed SELINUX=permissive to SELINUX=disabled

And then reboot : no more error, all ok and "getenforce" tells me that SELINUX is disabled.

Not so cool but I didn't changed anything else and it is solved now.

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So, you installed selinux and configured a policy to remove a warning. I will stick with the warning.

Quote from Draky50110

With warning on, it keeps looking at a file which is not here and then all connections are disabled : you can't SSH, use docker/container and access them on LAN, etc.

You can't even ping the server.

You must have something going on. I have seen plenty of people who have the message and nothing is wrong. SELinux can't be causing a problem when the service isn't installed. The lib is installed but that isn't enough to cause a problem.