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...

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on the foreman server I had to run:

puppet cert clean client-certname

on the client

rm -rf /var/lib/puppet/ssl


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...

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Easy as this

virsh setmem  4096M --live --config


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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.

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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 

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