Have you ever had such a problem?

 # reboot
 bash: /sbin/reboot: Input/output error
 # shutdown -r now
 bash: /sbin/shutdown: Input/output error
 

Obviously, there is a problem with your drive. These commands are failing because the kernel is unable to load the /sbin/reboot and /sbin/shutdown binaries from the disk so that it can e...

Continue reading...

on the foreman server I had to run:

puppet cert clean client-certname

on the client

rm -rf /var/lib/puppet/ssl

and

puppet agent -td --server=

Additional Hints

To fix this, remove the certificate from both the master and the agent and then start a puppet run, which will automatically regenerate a certificat...

Continue reading...

Easy as this

virsh setmem  4096M --live --config

 

Continue reading...

In my case krb5kdc ist running out of leck mich, cause the host system hasn't realy enough system resources.

The correct thing to do is adjust net.ipv4.tcp_max_syn_backlog to a high enough value that it no longer fires this warning.

You will probably also want to adjust the TCP stack in general to have more memory.

Continue reading...

Currently I'am using Windows 10 Pro Buid 17134.648 and Ubuntu 18.04 within the WSL Bash.

To avoid updating the /etc/resolv.conf wich is a symlink pointing to /run/resolvconf/resolv.conf the default methods like dhclient-enter-hooks.d doesn't work.

Easy way out

Delete /etc/resolv.conf
Create a new /etc/resolv.conf 



Continue reading...