Archive for the 'Computer' Category
Saturday, February 26th, 2022
Die älteste mir zugängliche Mail von Sven Guckes direkt an mich stammt aus dem Jahr 2002, und startet seinerseits mit: eine dokumentierte loesung – das ist prima! :-) Natürlich ging es um: Vim. Viele Mails unter anderem zum Kunsthaus Graz, den Chemnitzer Linux-Tagen, den Grazer Linuxtagen (GLT) und seinem Geek Brunch sollten folgen. Unvergessen bleibt […]
Posted in Allgemein, Computer, Debian-German, Open Source | 1 Comment »
Monday, July 5th, 2021
Continuing with #newinbullseye. One package that isn’t new but its tools are used by many of us is util-linux, providing many essential system utilities. There is util-linux v2.33.1 in Debian/buster and util-linux v2.36.1 in Debian/bullseye, and as usual there are many new features and options available. I don’t want to replicate the release notes provided […]
Posted in Computer, Debian, English, Open Source | Comments Off on Debian bullseye: changes in util-linux #newinbullseye
Wednesday, June 9th, 2021
Continuing with #newinbullseye, it’s worth being aware of, that efivars is gone with the kernel version shipped as of Debian/bullseye. Quoting from wiki.debian.org/UEFI: The Linux kernel gives access to the UEFI configuration variables via a set of files under /sys, using two different interfaces. The older interface was showing files under /sys/firmware/efi/vars, and this is […]
Posted in Computer, Debian, English, Open Source | Comments Off on efivars is gone with Debian/bullseye #newinbullseye
Thursday, May 27th, 2021
Debian v11 with codename bullseye is supposed to be released as new stable release soon-ish (let’s hope for June, 2021! :)). Similar to what we had with #newinbuster and previous releases, now it’s time for #newinbullseye! I was the driving force at several of my customers to be well prepared for bullseye before its freeze, […]
Posted in Computer, Debian, English, Open Source | 1 Comment »
Friday, April 9th, 2021
It all started with the big bang! We nearly lost 33 of 36 disks on a Proxmox/Ceph Cluster; this is the story of how we recovered them. At the end of 2020, we eventually had a long outstanding maintenance window for taking care of system upgrades at a customer. During this maintenance window, which involved […]
Posted in Computer, Debian, English, SynPro | 1 Comment »
Tuesday, February 16th, 2021
(Blogging this, since this is a recurring anti-pattern I noticed at several customers and often comes up during deployments of 3rd party repositories.) Update on 2021-02-19: clarified, that Signed-By requires apt >= 1.1, thanks Vincent Bernat Many upstream projects provide Debian repository instructions like this: curl -fsSL https://example.com/stable/debian.gpg | sudo apt-key add – Do not […]
Posted in Computer, Debian, English, Open Source | 4 Comments »
Friday, July 3rd, 2020
We did it again™, at the end of June we released Grml 2020.06, codename Ausgehfuahangl. This Grml release (a Linux live system for system administrators) is based on Debian/testing (AKA bullseye) and provides current software packages as of June, incorporates up to date hardware support and fixes known issues from previous Grml releases. I am […]
Posted in Computer, Debian, English, Links, Open Source | 2 Comments »
Wednesday, July 31st, 2019
Disclaimer: I started writing this blog post in May 2018, when Debian/stretch was the current stable release of Debian, but published this article in August 2019, so please keep the version information (Debian releases + kernels not being up2date) in mind. The kernel version of Debian/stretch (4.9.0) didn’t support the RAID controller as present in […]
Posted in Computer, Debian, English, Open Source | Comments Off on Some useful bits about Linux hardware support and patched Kernel packages
Monday, July 29th, 2019
Es ist schon ein Weilchen her, aber nachdem mich noch immer Leute darauf ansprechen: Auf den Grazer Linuxtagen 2019 (GLT19) war ich als Referent mit einem Vortrag zum Thema “Best Practices in der IT-Administration, Version 2019” vertreten. In dem 25-minütigen Vortrag geht es um die moderne IT-Administration und welche Best Practices es im Jahr 2019 […]
Posted in Computer, Events | Comments Off on Vortrag: Best Practices in der IT-Administration, Version 2019 @ GLT19
Friday, July 26th, 2019
Debian buster is there, and similar to what we had with #newinwheezy, #newinjessie and #newinstretch it’s time for #newinbuster! One package that isn’t new but its tools are used by many of us is coreutils, providing many essential system utilities. We have coreutils v8.26-3 in Debian/stretch and coreutils v8.30-3 in Debian/buster. Compared to the changes […]
Posted in Computer, Debian, English, Open Source | Comments Off on Debian buster: changes in coreutils #newinbuster
Friday, July 26th, 2019
Debian buster is there, and similar to what we had with #newinwheezy, #newinjessie and #newinstretch it’s time for #newinbuster! Update on 2019-07-26 22:55 UTC: Cyril Brulebois pointed out, that findmnt (find a filesystem) was available in Debian/stretch already as part of the mount package, updated the blog post accordingly One package that isn’t new but […]
Posted in Computer, Debian, English, Open Source | 2 Comments »
Wednesday, July 25th, 2018
Back in 2006 I started to write a tool called grml-debootstrap. grml-debootstrap is a wrapper around debootstrap for installing Debian systems. Using grml-debootstrap, it’s possible to install Debian systems from the command line, without having to boot a Debian installer ISO. This is very handy when you’re running a live system (like Grml or Tails) […]
Posted in Computer, Debian, English, Open Source | Comments Off on Inception: VM inside Docker inside KVM – Testing Debian VM installation builds on Travis CI
Tuesday, May 8th, 2018
Auf den Grazer Linuxtagen 2018 (GLT18) war ich als Referent mit einem Vortrag zum Thema “Best Practices in der IT-Administration, Version 2018” vertreten. In dem 25-minütigen Vortrag geht es um die moderne IT-Administration und welche Best Practices es im Jahr 2018 gibt. Es gibt den Vortrag als Videomitschnitt auf YouTube sowie in verschiedenen Formaten auch […]
Posted in Computer, Debian-German, Events, Links | Comments Off on Vortrag: Best Practices in der IT-Administration, Version 2018 @ GLT18
Saturday, March 17th, 2018
Am Dienstag (20.03.2018) findet das nächste Treffen der Infracoders-Graz statt. Ich wurde eingeladen einen Vortrag zu halten und werde zum Thema “Best Practices in der IT-Administration” referieren. Was: Vortrag zu “Best Practices in der IT-Administration” Wann: Dienstag, 20.03.2018 um 19:00 Uhr Wo: Aula X Space, Georgigasse 85, Graz Eintritt frei
Posted in Computer, Debian-German, Events | Comments Off on Event: Infracoders-Graz – Best Practices in der IT-Administration
Saturday, December 16th, 2017
It all started with a tweet of mine: I received quite some feedback since then and I’d like to iterate on this. I’m a puppet user since ~2008 and since ~2015 also ansible is part of my sysadmin toolbox. Recently certain ansible setups I’m involved in grew faster than I’d like to see, both in […]
Posted in Computer, Debian, English | 1 Comment »
Wednesday, June 14th, 2017
The Debian stretch release is going to happen soon (on 2017-06-17) and since our latest Grml release is based on a very recent version of Debian stretch I’m taking this as opportunity to announce it also here. So by the end of May we released a new stable release of Grml (the Debian based live […]
Posted in Computer, Debian, English | Comments Off on Grml 2017.05 – Codename Freedatensuppe
Friday, May 26th, 2017
Debug packages include debug symbols and so far were usually named <package>-dbg in Debian. Those packages are essential if you’ve to debug failing (especially: crashing) programs. Since December 2015 Debian has automatic dbgsym packages, being built by default. Those packages are available as <package>-dbgsym, so starting with Debian/stretch you should no longer look for -dbg […]
Posted in Computer, Debian, English | Comments Off on The #newinstretch game: dbgsym packages in Debian/stretch
Thursday, May 25th, 2017
Repeating what I did for the last Debian releases with the #newinwheezy and #newinjessie games it’s time for the #newinstretch game: Debian/stretch AKA Debian 9.0 will include a bunch of packages for people interested in digital forensics. The packages maintained within the Debian Forensics team which are new in the Debian/stretch release as compared to […]
Posted in Computer, Debian, English | Comments Off on The #newinstretch game: new forensic packages in Debian/stretch
Friday, May 19th, 2017
We’re coming closer to the Debian/stretch stable release and similar to what we had with #newinwheezy and #newinjessie it’s time for #newinstretch! Hideki Yamane already started the game by blogging about GitHub’s Icon font, fonts-octicons and Arturo Borrero Gonzalez wrote a nice article about nftables in Debian/stretch. One package that isn’t new but its tools […]
Posted in Computer, Debian, English, Open Source | Comments Off on Debian stretch: changes in util-linux #newinstretch
Thursday, May 18th, 2017
Recently we had a WTF moment at a customer of mine which is worth sharing. In an automated deployment procedure we’re installing Debian systems and setting up MySQL HA/Scalability. Installation of the first node works fine, but during installation of the second node something weird is going on. Even though the deployment procedure reported that […]
Posted in Computer, Debian, English | Comments Off on Debugging a mystery: ssh causing strange exit codes?