Permanently allow dmesg

Ask Fedora
1

I can enter this sudo sysctl kernel.dmesg_restrict=0 but is seems reset after logoff and on

How do I set this permanently

2

A couple of options: sysctl -w to append to /etc/sysctl.conf or a drop-in file in /etc/sysctl.d.

3

Unfort. sysctl -w is reset after reboot.,
Doing echo "kernel.dmesg_restrict=0" > /etc/sysctl.d/dmesg4all did not work either.

4

The filename needs to end in .conf, I think.

5

wait.. it did work after doing sudo sysctl -p /etc/sysctl.d/dmesg4all

6

With the .conf it should hopefully get autoloaded at startup and not require a manual sudo sysctl -p ?

7 
echo "kernel.dmesg_restrict=0" | sudo tee /etc/sysctl.d/dmesg4all
sudo sysctl -p /etc/sysctl.d/dmesg4all
8

how is that a solution? Do you run

sudo sysctl -p /etc/sysctl.d/dmesg4all

manually after each system start?

I’d suggest reading man sysctl.conf and man systemd-sysctl

9

thanks! I read those. Now what?

10

It won’t work if the file you write to in /etc/sysctl.d doesn’t end up with extension name .conf. Instead of dmesg4all use dmesg4all.conf.