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Archive for the 'English' Category

Inception: VM inside Docker inside KVM – Testing Debian VM installation builds on Travis CI

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) […]

Revisiting 2017

Monday, January 1st, 2018

Mainly to recall what happened last year and to give thoughts and planning for upcoming year(s) I’m once again revisiting the last year (previous years: 2016, 2015, 2014, 2013 + 2012). Here we go: Events: none (not even Grazer Linuxdays), on purpose Technology / Open Source: lots of work around Proxmox + Ceph finally released […]

Usage of Ansible for Continuous Configuration Management

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 […]

Grml 2017.05 – Codename Freedatensuppe

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 […]

The #newinstretch game: dbgsym packages in Debian/stretch

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 […]

The #newinstretch game: new forensic 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 […]

Debian stretch: changes in util-linux #newinstretch

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 […]

Debugging a mystery: ssh causing strange exit codes?

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 […]

Revisiting 2016

Wednesday, January 4th, 2017

Mainly to recall what happened last year and to give thoughts and planning for upcoming year(s) I’m once again revisiting the last year (previous years: 2015, 2014, 2013 + 2012). Here we go: Events: attended three conferences (OSDC in Germany, Linuxdays Graz + Debconf16 in Capetown) invited panel participant at Digitaldialog Privacy Technology / Open […]

systemd backport of v230 available for Debian/jessie

Thursday, July 28th, 2016

At DebConf 16 I was working on a systemd backport for Debian/jessie. Results are officially available via the Debian archive now. In Debian jessie we have systemd v215 (which originally dates back to 2014-07-03 upstream-wise, plus changes + fixes from pkg-systemd folks of course). Now via Debian backports you have the option to update systemd […]

DebConf16 in Capetown/South Africa: Lessons learnt

Tuesday, July 19th, 2016

DebConf 16 in Capetown/South Africa was fantastic for many reasons. My Capetown/South Africa/Culture/Flight related lessons: Avoid flying on Sundays (especially in/from Austria where plenty of hotlines are closed on Sundays or at least not open when you need them) Actually turn back your seat on the flight when trying to sleep and not forget that […]

My talk at OSDC 2016: Continuous Integration in Data Centers – Further 3 Years Later

Thursday, May 26th, 2016

Open Source Data Center Conference (OSDC) was a pleasure and great event, Netways clearly knows how to run a conference. This year at OSDC 2016 I gave a talk titled “Continuous Integration in Data Centers – Further 3 Years Later“. The slides from this talk are available online (PDF, 6.2MB). Thanks to Netways folks also […]

Event: DebConf 16

Monday, April 18th, 2016

Yes, I’m going to DebConf 16! This year DebConf – the Debian Developer Conference – will take place in Cape Town, South Africa. Outbound: 2016-06-26 15:40 VIE -> 17:10 LHR BA0703 2016-06-26 21:30 LHR -> 09:55 CPT BA0059 Inbound: 2016-07-09 19:30 CPT –> 06:15 LHR BA0058 2016-07-10 07:55 LHR –> 11:05 VIE BA0696

Event: OSDC 2016

Thursday, March 31st, 2016

Open Source Data Center Conference (OSDC) is a conference on open source software in data centers and huge IT environments and will take place in Berlin/Germany in April 2016. I will give a talk titled “Continuous Integration in Data Centers – Further 3 Years Later” there. I gave a talk titled “Continuous Integration in data […]

Revisiting 2015

Thursday, January 7th, 2016

Business: Attended four conferences (FOSDEM, cfgmgmtcamp, Linuxdays Graz and Debconf) Second year of business with SynPro Solutions, very happy with what we achieved Very intense working year (Grml Solutions, SynPro Solutions, Grml-Forensic), I worked way more than anticipated and planned but am very glad that I’ve such wonderful business partners and colleagues Technology / Open […]

DebConf15: “Continuous Delivery of Debian packages” talk

Monday, August 24th, 2015

At the Debian Conference 2015 I gave a talk about Continuous Delivery of Debian packages. My slides are available online (PDF, 753KB). Thanks to the fantastic video team there’s also a recording of the talk available: WebM (471MB) and on YouTube.

HAProxy with Debian/squeeze clients causing random “Hash Sum mismatch”

Thursday, July 2nd, 2015

Update on 2015-07-02 22:15 UTC: as Petter Reinholdtsen noted in the comments: Try adding /etc/apt/apt.conf.d/90squid with content like this: Acquire::http::Pipeline-Depth 0; It turn off the feature in apt confusing proxies. ” – this indeed avoids those “Hash Sum mismatch” failures with HAProxy as well. Thanks, Petter! Many of you might know apt’s “Hash Sum mismatch” […]

fork(), once again

Friday, May 15th, 2015

On 10th of May 2015 my lovely wife has made me a lovely present again: welcome to our family, Johanna.

The #newinjessie game: tools related to RPM packages

Monday, May 4th, 2015

Continuing the #newinjessie game: Bernhard Miklautz, contributor to jenkins-debian-glue and author of jenkins-package-builder (being in an early stage but under active development to provide support for building RPMs, similar to what jenkins-debian-glue provides for building Debian/Ubuntu packages) pointed out that there are new tools related to RPM packaging available in Debian/jessie: mock: Build rpm packages […]

GLT15: Slides of my “Debian 8 aka jessie, what’s new” talk

Tuesday, April 28th, 2015

I wasn’t sure whether I would make it to Linuxdays Graz (GLT15) this year so I didn’t participate in its call for lectures. But when meeting folks on the evening before the main event I came up with the idea of giving a lightning talk as special kind of celebrating the Debian jessie release. So […]