The joy of solving performance problems - Part 1

It took me some more time to have this first part ready, because I revised it quite a lot and in the recent evenings i didn’t wanted to spend the...

The joy of finding performance problems - A foreword

A journey Many interesting journeys start with a first step. There are lessons in them and no matter how much you have seen in the past, you always learn new...

Visualize

„The Matrix“ ruined it a little but for all of us. Outsiders have sometimes the impression that admins can find errors on their servers just by staring at the lines...

Potential energy - or how to maximize your XP points in Zwift

Of course I prefer to cycle outdoors. However when it’s rather cold and dark when I usually start to cycle the motivation is significantly reduced. In such situations I’m using...

Zebras, anchors, bottlenecks and link aggregation

Diagnosing problems with computers has a lot to do with diagnosing illnesses (that’s the reason why I’m working on an article about patching and vaccination and the inherent similarities). Therefore...

Tales from the saddle - Too much technology.But no cake

Today i wanted to ride to my parents in Lüneburg, it’s not that far … just 40 km and there would be cake at my destination. However i had some...

Tales from the saddle - Safer cycling with the "idiots!"-assumption

(Yes, i’m starting to blog again. About whatever crosses my mind. I will put some articles from time to time into my Jekyll for publication the next day at noon.)...

2021

Ich sitze hier gerade an meinem Schreibtisch und wundere mich, das selbst in einem Jahr, in dem es eigentlich empfohlen ist, zuhause zu bleiben, es lediglich das übliche Fernsehprogramm gibt,...

Rest in peace, Joerg Schilling

Just saw the notification that Joerg Schilling, the creator of the cdrtools and Schillix (and many other tools), passed away this Sunday. He was one of the well known persons...

Changing passwords as a role

Of course the privilege to change other peoples password can be encapsulated into a role, so you have an additional authentication by using the role password before you get such...

Additional information for your zone configuration.

Sometimes it’s useful to enrich your zone configuration with some additional data, so someone can look into the zone config and know for example who is responsible for the zone....

Changing passwords - re-revisited

There was an interesting question on Twitter after i published my blog entry about assigning the authorization to change passwords to regular users: “Can you change the root password with...

Changing passwords - revisited

You are an quite busy admin. The systems are well kept. Everything is working fine. However many people work on your system and inevitably some people forget their passwords. And...

Changing passwords - revisited

You are an quite busy admin. The systems are well kept. Everything is working fine. However many people work on your system and inevitably some people forget their passwords. And...

Changing passwords

This is a blog entry from the category “Just because you can do it this way, you should not nescessarily do it this way” albeit the biggest problem with using...

S11.4CS: General Administration - Packaging

Oracle Solaris 11.4 General Administration Packaging Install a package called diagnostic/wireshark: # pkg install diagnostic/wireshark Install a group package to provide a desktop environment # pkg install solaris-desktop Install package...

S11.4CS: General Administration - Boot Environments

Oracle Solaris 11.4 General Administration Boot Environments Boot Environments are individual bootable instances of the operating system that take advantage of the Oracle Solaris ZFS file system snapshot and clone...

S11.4CS: General Administration - Users and roles

Oracle Solaris 11.4 General Administration Users and Roles Revert root to a normal user account # rolemod -K type=normal root Configure root as a role (default) # usermod -K type=role...

S11.4CS: General Administration - Locales, timezone and keyboard

Oracle Solaris 11.4 General Administration Locales, Timezone and Keyboard Get current configuration # nlsadm get-console-keymap # nlsadm get-system-locale # nlsadm get-timezone List available timezones # nlsadm list-timezone List available console...

Solaris 11.4 Cheatsheet

Starting today i’m beginning the next part of my brain dump project. I will port the Solaris 11.3 Cheat Sheet which i wrote to some extend some years ago into...