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 th...

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 de...

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=<foremanservername> Additional Hints To fix this, ...

Easy as this virsh setmem <vmdomname> 4096M --live --config

An overview of the SSSD architecture The SSSD consists of several processes, each of them has its own function. The SSSD processes can be one of the following: the monitor The purpose of the moni...

Sometimes you'll need to setup a single point of authentification for e.g. to centralize stuff.  I've found a nice Document, about Integrating Linux systems with Active Directory using Open So...

Reset the IPMI ipmitool mc reset cold -I lan -H 10.0.0.1 -U admin -P password Boot direct into the Bios on next Boot ipmitool -I lanplus -H 10.0.0.101 -U ADMIN chassis bootdev biosSet Boot Device t...

Feb 16 17:45:08 moshpit systemd[1]: Starting unifi... Feb 16 17:45:24 moshpit unifi[908]: Feb 16, 2019 17:45:24 PM org.apache.commons.ttpclient.HttpMethodDirector executeWithRetry INFO: I/O excepti...

login to your mysql instance as root user and then use this commands to active mysql query logs SET GLOBAL log_output = 'FILE';SET GLOBAL general_log_file = 'nameoflogfile';SET GLOBAL general_log =...

Convert vmdk direct to an empty attached Storage qemu-img convert path_and_name_of_vmdk_file -O raw /dev/devicename