Lenz Grimmer's blog - OSS

What have I been up to lately?

nospam@example.com (Lenz Grimmer) — Fri, 02 Sep 2011 13:51:00 +0200

Despite my best intentions, I haven't posted on this blog for a while, which is a shame! I've become busy writing on so many other places since I moved into my new role in the Oracle Linux product management team in April. I've learned a lot and I am feeling quite at home here! The team is excellent and very nice to work with — I am slowly getting the "Big Picture".

But even though I've been neglecting this blog, there are a lot of things that are publicly visible and document some of my activites:

I've created two podcasts for the Oracle Linux podcasts:

In addition to working the @ORCL_Linux Twitter account and FaceBook page, I've been blogging on the Oracle Linux blog:

From time to time, I'm a guest blogger on the OTN Garage blog:

I also created new content and updated pages on the main Oracle web site and the Oracle Technology Network (OTN):

A new technical white paper about Oracle Linux and the Unbreakable Enterprise Kernel
An article about How to Extract Files from an Oracle Linux RPM Package Without Installing the Package
Added a new page about our Oracle Linux support offering
Updated the OCFS2 product page
Updated the Oracle Linux technical information page.

I've been traveling a bit as well and attended a few conferences where I spoke about Oracle Linux (and MySQL):

MySQL High Availability at COLLABORATE 11, Orlando (FL), USA
An introduction to Oracle Linux at the HEPiX Spring 2011 Workshop, Darmstadt, Germany
What's new in MySQL 5.5 at LinuxTag 2011, Berlin Germany
Updates on Oracle Linux and Oracle VM at fisl12, Porto Alegre, Brazil

I probably forgot a few things in my reflection of the past few months, but these were some of the highlights.

Check out my followup blog post on what I'm up to in the coming weeks and months!

Oracle at fisl12 (Porto Alegre, Brazil, 2011-06-29/2011-07-02)

nospam@example.com (Lenz Grimmer) — Thu, 16 Jun 2011 16:38:00 +0200

fisl12 is likely the largest free and open source software event in Latin America. This year, it takes place in Porto Alegre, Brazil, from June 29th to July 2nd. Oracle is a gold sponsor of the event and I will attend it as a speaker. I feel honoured and excited to be there – for me it will be the first visit to the South American continent.

They already have over 3000 registered attendees, so this definitely is going to be a great conference. There is quite a number of well-known names on the speaker roster and I look forward to meeting a lot of familar faces there.

The agenda is still under development but quite impressive already – too bad I don't speak Portuguese...

I will be giving an introduction and status update to Oracle Linux and as our virtualization technologies Oracle VM and Oracle VM VirtualBox. Other Oracle speakers at fisl12 include:

Davi Arnaut - MySQL Engineering
Roger Brinkley - Java Evangelists and the Community Leader for the Mobile & Embedded Community
John Ceccarelli - Middleware Engineering
Anil Gaur - VP of Java Platform, Enterprise Edition, and GlassFish Server in the Fusion Middleware Group
Arun Gupta - Java EE and GlassFish evangelist
Luke Kowalski - VP in the corporate architecture group
Henrique Leandro - MySQL Support Engineer
Simon Ritter - Java Technology Evangelist
Dave Stokes - MySQL Community Manager
Dalibor Topic - Java F/OSS Ambassador

Back in Linux land

nospam@example.com (Lenz Grimmer) — Thu, 16 Jun 2011 09:46:19 +0200

It's been a while since my last post on this blog; I definitely need to get back into the habit! One of the reasons for my radio silence was that I switched roles here at Oracle. After having been with the MySQL team for 9 years, I felt it was time for a change. Fortunately I did not have to look far – I'm now a member of the Oracle Linux product management team and I am having a lot of fun there.

However, I realized that while I was an active Linux user on the desktop, quite a lot has happened on the enterprise and data center side of things. Linux has really come a long way and I am glad to be back in this field, drinking from the firehose and learning a lot about recent developments and technologies. For me, this is kind of going "back to my roots", as I have been deeply involved with Linux at SuSE before I joined MySQL in 2002.

Anyway, I'm still alive and you can expect to hear more about Linux and less about MySQL from me on this blog in the future. I also started writing for the official Oracle Linux Blog as well as the OTN Garage blog – watch these spaces for future posts from me, too.

In addition to that, my travel schedule is also filling up again: at the end of this month I'll be speaking at the fisl12 conference in Brasil and Oracle OpenWorld in San Francisco later this year. I also submitted talk proposals to the DOAG conference and the UKOUG conference. Looking forward to it!

Oracle at LinuxTag 2011 in Berlin, Germany

nospam@example.com (Lenz Grimmer) — Fri, 29 Apr 2011 10:35:00 +0200

Linuxtag is likely one of the oldest and largest Linux/OSS events in Germany. I remember having been there to represent SuSE Linux while it still took place at the University of Kaiserslautern, using tables and chairs from the lecture rooms as exhibition stands (this must have been around 1998 or 1999). This year it will take place in Berlin again, and the session schedule looks very promising. I'll be there from Wednesday till Friday and I feel that I will have a hard time deciding which presentations I should attend...

I'll be speaking about What's new in MySQL 5.5 on Friday, 13th of May, at 15:00. If you haven't updated to MySQL 5.5 yet, stop by to hear what new features and improvements have been implemented in this version, which was released in December last year.

In addition to my presentation, there will be two more talks given by Oracle employees:

Wim Coekaerts, SVP of Linux and Virtualization Engineering at Oracle will give the first keynote on Wednesday 11th, 14:00. He'll be talking about Taking Linux into the Clouds — this is a very hot topic and I look forward to this session.

Right afterwards, Dalibor Topic will provide us with an OpenJDK Community Update. If you're a Java developer and you'd like to get the scoop of what's coming, this presentation is one you should not miss!

See you in Berlin!

Upcoming developer/sysadmin days about MySQL and Solaris

nospam@example.com (Lenz Grimmer) — Thu, 28 Apr 2011 17:50:07 +0200

The folks at OTN have been very busy — among many others (both virtual and in RL), there are two upcoming developer/sysadmin days about MySQL and Solaris. Both will take place in California next month:

On Tuesday, May 03, 2011, 8:00am to 4:00 pm, there will be the OTN Developer Day for MySQL in the Oracle Santa Clara Agnews Campus Auditorium. It will cover application development with MySQL, performance tuning tips and managing MySQL environments.
On Tuesday, May 17, 2011, 8:00 am to 4:00 pm, the OTN's first Sys Admin Day for Oracle Solaris will take place in the Hyatt Regency La Jolla at Aventine in San Diego, CA. Topics include ZFS, security and virtualization using Solaris zones.

Admissions to these events are free and space is limited — so make sure to register fast!

Announcing the FOSDEM MySQL & Friends DevRoom schedule

nospam@example.com (Lenz Grimmer) — Wed, 02 Feb 2011 12:49:13 +0100

It was ready for a while already, but now it's part of the official FOSDEM schedule as well: I am very pleased to announce the presentations and speakers of the MySQL & Friends Developer Room, which will take place this coming Saturday (5th of February) in Brussels, Belgium.

This year, our DevRoom will be located in room H.2213 (in the H Building), which has a capacity of up to 100 people and will be available to us from 13:00-19:00 o'clock. We have 12 sessions lined up, each will last 25 minutes (incl. Q&A). Without further ado, here's our schedule:

Time	Speaker	Session Title
13:00-13:25	Lenz Grimmer	Welcome note / What's new in MySQL 5.5
13:30-13:55	Oli Sennhauser	HandlerSocket and similar technologies - NoSQL for MySQL
14:00-14:25	Steve Hardy	Boosting Enterprise MySQL performance: implementing I/O prefetch for InnoDB
14:30-14:55	Istvan Podor	Over 20,000QPS, XtraDB performance show
15:00-15:25	Istvan Podor	Data Recovery for MySQL
15:30-15:55	Kenny Gryp	Taking Backups With XtraBackup
16:00-16:25	Sergey Petrunya	New query optimizer features in MariaDB
16:30-16:55	Lenz Grimmer	MySQL 5.5 Replication Enhancements: an overview
17:00-17:25	Giuseppe Maxia	Seamless MySQL replication failover with Tungsten
17:30-17:55	Petya Kohts	Multimaster MySQL failover
18:00-18:25	Seppo Jaakola	Multi-Master Replication Approaches
18:30-18:55	Stéphane Combaudon	A practical overview of Maatkit

I would like to thank all speakers for their submissions and for the efforts they are willing to go through in order to make it to this event! If you happen to be at FOSDEM this year, please stop by and join us.

We also plan to head out for a meetup over dinner after the event. If you would like to attend, please register, so we can take you into account! (Thanks a lot for Kenny Gryp for organizing this meetup)

One more week to submit talks for the Harmony conference in Helsinki, Finland (May 19/20)

nospam@example.com (Lenz Grimmer) — Tue, 25 Jan 2011 17:29:06 +0100

Just a quick reminder: the Oracle user groups of Finland, Estonia, Latvia and Russia are organizing a joint conference, the Harmony. It will take place on May 19th-20th in Helsinki, Finland. I've met the organizers at the IOUC summit that took place at the Oracle HQ this week and they would love to have some more MySQL content. So if you have an idea for a talk about a MySQL-related topic, please submit it! The call for papers closes on February, 1st!

Upcoming speaking engagements: SF MySQL Meetup, FOSDEM, GUUG FFG and COLLABORATE 11

nospam@example.com (Lenz Grimmer) — Thu, 20 Jan 2011 22:34:00 +0100

My calendar is filling up with speaking engagements about MySQL at various events quickly. Here is a list of events for the coming months where I'll be present:

On Wednesday, January 26th, I will be speaking about MySQL High Availability Solutions at the San Francisco MySQL Meetup. I feel honored for having been invited to speak there and I'm quite excited that venue is fully booked! I look forward to meeting so many MySQL users in one place.
On Saturday, February 5th, I'll be attending and speaking at the MySQL & Friends Developer Room at FOSDEM 2011 in Brussels, Belgium. I helped organizing the DevRoom and preparing the schedule for this event. We have a great lineup of speakers and topics, and I will speak about MySQL 5.5 there. I've been to FOSDEM many times before and it's one of the OSS conferences in Europe that I really enjoy coming back for every year.
On Thursday, March 24th I'll be in Weimar, Germany, attending the "GUUG-Frühjahrsfachgespräch 2011", a conference organized be the German Unix User Group (GUUG). The topic of my session is MySQL Replication Technologies - an Overview (in German). Erkan, well-known member of the German MySQL community will also be there to talk about "Toolbox MySQL", giving an introduction to the MySQL plugin API and technology.
Finally on April 10th-14th I will be in Orlando, Florida to attend and speak at COLLABORATE 11. Organized by the Independent Oracle Users Group (IOUG), this is a fairly large conference covering a wide range of Oracle Applications and Technologies. This year, they have more than 50 sessions on MySQL, provided by both well-known speakers of the MySQL community as well as Oracle employees. The MySQL talks will be given in one track, which spans from Monday till Thursday. So at least one does not have to choose between several interesting MySQL topics at the same time

If you happen to be around at any of these events, please stop by!

I've also submitted a number of MySQL talks for LinuxTag, which will take place in Berlin, Germany on May 11th-14th. I hope that my proposals are being considered and I would like to encourage you to submit one, too! The call for papers is still open until January 25th and it would be great to have some more MySQL content in the program...

Oh, and don't forget to mark your calendars for MySQL Sunday at Oracle Openworld 2011 later this year (October 2nd-6th)! I unfortunately missed last year's event, but this is going to be the conference with the largest MySQL show, lots of news and updates, and plenty of opportunities for networking. You can already register for the event at a "Super Saver" discount until April, 1st here.

Bevorstehende Veranstaltungen mit MySQL-Relevanz in Deutschland und Umgebung

nospam@example.com (Lenz Grimmer) — Thu, 20 Jan 2011 01:19:00 +0100

Der Zeitplan des "MySQL & Friends" Developer Rooms auf der FOSDEM steht! Mein Dank gilt allen Vortragenden, die sich die Zeit genommen hatten, Vorschläge einzureichen. Letztendlich mußten wir eine Auswahl treffen, die Agenda ist nun auf dem MySQL Forge Wiki hinterlegt und wird auch in Kürze im offiziellen FOSDEM-Programm zu finden sein. Unter den Vortragenden sind viele bekannte Namen dabei und ich denke, wir haben ein sehr attraktives Programm zusammengestellt.

Gestern erhielt ich die Bestätigung, daß mein Vortragvorschlag für die GUUG Frühjahrsfachgespräche in Weimar im März angenommen wurde. Am Dienstag, den 24.3. um 11:30 werde ich einen Überblick über das Thema MySQL Replikationstechnologien geben. Im Slot davor wird Erkan einen Vortrag mit dem vielversprechenden Titel Baukasten MySQL halten. Ich freue mich schon sehr darauf! Auch der Rest des Vortragsprogramms sieht sehr interessant aus — ich habe viele mir bekannte Namen (besonders aus dem Sun-Umfeld) entdeckt.

Übrigens: der LinuxTag 2011 findet dieses Jahr vom 11.-14. Mai wieder in Berlin statt. Der Call for Papers geht noch bis 25. Januar. Ich habe ein paar Vortragsvorschläge zum Thema MySQL eingereicht, hoffentlich finden sie Zuspruch. Ich würde es auf jeden Fall begrüßen, wenn noch ein paar weitere MySQL-Vorträge von anderen dazukommen

Updated Drupal 7 appliances to version 7.0 final

nospam@example.com (Lenz Grimmer) — Thu, 06 Jan 2011 12:33:10 +0100

Congratulations to the Drupal community for getting version 7.0 released! This is a major mile stone and an excellent reason to celebrate!

If you want to give Drupal 7 a try without having to install anything, I've now updated my Drupal 7 appliances on SuSE Studio to the latest release. The appliance is based on openSUSE Linux 11.3 and is available in two variants:

A text-mode only appliance to which you connect using your local web browser via the network.
A GUI version that starts up the Firefox browser in a minimalistic GNOME desktop to perform the installation locally. Remote network access is available, too.

The database backend is MySQL 5.1, with the InnoDB plugin and strict mode enabled. phpMyAdmin has been added to support web-based administration of the MySQL server. You can access it via http://localhost/phpMyAdmin/. I also added drush, the Drupal command line shell and scripting interface and some additional packages (yast2-http-server, bind-utils, php5-ctype, patch). I also bumped up the appliance's version number to 7.0.0, to match the version number of Drupal included.

The appliance is available in various formats:

A live raw disk image, ready to be written to an USB stick or flash drive
A live ISO image, to be burned on a CD or used in a virtual machine
A hard disk image, to be dumped on a hard disk drive
Various virtual disk formats, e.g. OVF, VMWare/VirtualBox/KVM and Xen

Please see the installation instructions provided on the download pages for details on how to use the various image formats.

So congratulations to the Drupal developer community for reaching this goal and thanks to SuSE/Novell/Attachmate for providing the infrastructure for creating such appliances. I also would like to especially thank Richard Bos for the testing and many suggestions for improvement of these appliances!

Back from Lisbon, off to Nuremberg

nospam@example.com (Lenz Grimmer) — Mon, 15 Nov 2010 13:31:06 +0100

Yesterday afternoon I returned from the SAPO CodeBits 2010 conference, which took place in Lisbon, Portugal. Just like the previous year, CodeBits has been a great conference to be at and I am grateful for having been selected for participation. Thursday, the first conference day was quite a busy one for me — I gave two presentations in a row:

Afterwards, I also participated in a panel discussion about "To SQL or not to SQL", together with representatives from other open source databases (@fdmanana from CouchDB, @antirez from Redis and @bpedro for PostgreSQL). It was an interesting but somewhat slow discussion and the overall conclusion is still the same: there's more than one tool for a given job, choose carefully what your requirements are and don't just blindly believe the hype.

On Friday, I had some more time to attend other people's presentations. In the evening I took part in another panel discussion about Physical Computing. I also had the "opportunity" to try one of the Nuclear Tacos (Video) they served — I have never had something that hot before. Ouch! Fortunately my tastebuds recovered in time for the speaker's dinner, which took place later that evening. We went to a Rodizio restaurant nearby, the food was plenty and delicious!

Saturday was a pretty low activity day for me. I spent some time in the DIY corner, doing some Arduino hacking. Later that day I attended the project presentations and the closing keynote. Unfortunately a majority of the content was in Portuguese, so I only got parts of the content. But it was still fun! I've published my pictures of CodeBits on Flickr, I hope you enjoy them

Later today, I will be travelling to the DOAG Conference 2010 in Nuremberg, Germany. I'll be giving two talks (in German) there on Wednesday, 17th:

I already received my speaker badge for this conference (see the picture below). Cool idea: you can use the public transport facilities (Buses, Trams) for free, by presenting this card!

There will also be a MySQL Community Meetup on Tuesday, 19:00 at the Press Center of the Congress Center East. If you're around, you're more than welcome to join us there!

Next up in the conference schedule for this year is the UKOUG Conference in Birmingham, UK (Nov. 29th - Dec. 1st). We helped them with setting up a MySQL session stream, and they've created an interesting lineup of talks. I'll be speaking about Making MySQL Administration a Breeze - A Look Into a MySQL DBA's Toolchest. See you there!

Call for Papers: "MySQL and Friends" Developer Room at FOSDEM 2011 (Feb. 5th, Brussels, BE)

nospam@example.com (Lenz Grimmer) — Mon, 01 Nov 2010 23:25:10 +0100

It's that time of the year again — the nice folks at FOSDEM have granted us a developer room at their upcoming conference (February 5+6 2011 in Brussels, Belgium)!

As usual there were more applications than they were able to accommodate, so we are very grateful for this opportunity for collaboration. Titled "MySQL and Friends", our room next year will be H.2213 with a capacity of 100 seats. It will be at our disposal on Saturday 5th, from 13:00 till 19:00. Like last year, we would like to set up a schedule of talks related to the MySQL server and the various projects that surround it. Each talk will last 20 minutes, plus 5 minutes of Q&A and a 5 minute break for switching speakers, giving us 12 slots in total to fill with excellent tech talks. Take a look at this year's schedule for some examples! I hope we can assemble an even more exciting and interesting schedule for next year.

Quoting from my last year's call for papers:

We are looking for covering a wide range of topics that attract both MySQL DBAs as well as application developers that work with MySQL as their database of choice. Are you developing a new storage engine or other plugin? Do you want to share your experiences and best practices in administering or deploying MySQL servers? Did you develop a new method to scale a MySQL setup? Let us and the audience know about it! You can submit your talk proposal via this submission form.

The deadline for turning in your proposal is Sunday, 26th of December, 2010, after which there will be a voting and rating period to identify the most interesting and attractive topics.

Please check the FOSDEM 2011 information page on the MySQL Forge Wiki for more details and don't hesitate to contact me directly, if you have any questions or suggestions. I look forward to your proposals!

Drupal 7 test drive appliance updated to 7.0-beta2, now with GUI option

nospam@example.com (Lenz Grimmer) — Mon, 25 Oct 2010 22:18:01 +0200

Over the weekend I updated my Drupal 7 test appliance in SUSE Studio to the Drupal 7.0-beta2 release, which was released on Oct. 23rd. I also added phpMyAdmin upon a user request, to provide a web-based method to work with the MySQL instance, if needed.

In addition to the lightweight "headless" appliance (which can only be accessed and configured via a remote network connection), I've now also created a GUI-based version. This appliance starts a minimal GNOME desktop and a Mozilla Firefox browser, which in turn opens the Drupal installation page by default. I hope you will find this useful if you want to toy around and test Drupal 7 without having to go through the entire OS and LAMP stack configuration yourself. In fact, you can even test this appliance via the recently added test drive option from right out of your web browser!

The appliance is now also available in OVF format. SuSE Studio now also builds Amazon EC2 images, which don't seem to be available for download from the SUSE Gallery yet. I assume this is a recent addition to the continuously improving SUSE Studio functionality, hopefully these images will be made available soon.

Neu im Buchregal: "Open Source Projektmanagement"

nospam@example.com (Lenz Grimmer) — Fri, 15 Oct 2010 16:56:14 +0200

Heute hat mir der Postbote Post aus Österreich gebracht: Michael Prokop vom GRML-Projekt war so freundlich, mit ein Exemplar seines Buches "Open Source Projektmanagement" (Open Source Press) zu schicken, das im September dieses Jahres auf den Markt kam. Sogar mit Widmung - vielen Dank dafür!

Ich zitiere einfach mal aus der Beschreibung des Verlags:

Die Unterschiede bei der Entwicklung von Open-Source- und Closed-Source-Software gehen weit über Fragen der Lizenzierung hinaus. Wer ein freies Projekt startet, sollte die ganz eigenen Regeln kennen, um nicht Motivation und Arbeit aller Beteiligten zu gefährden. Das heißt zugleich: Wer die besondere Dynamik bei der Entwicklung freier Software zu nutzen weiß, wird von den technischen Ergebnissen und der besonderen Atmosphäre gemeinschaftlicher Arbeit immer begeistert.
Michael Prokop, Initiator und Leiter des erfolgreichen "Grml"-Projekts, schöpft aus der Erfahrung, wenn er die vielfältigen Aspekte freier und zugleich professioneller Entwicklungsarbeit beschreibt: soziale Belange der Teambildung und Motivation, technische Hilfsmittel der Kommunikation und Code-Entwicklung, aber auch ganz praktische Fragen der Finanzierung, des Marketings und der Dokumentation.

Wer neue Impulse für seine Mitarbeit bei freien Projekten sucht oder als Entwickler kommerzieller Produkte Einblick in den Open-Source-Kosmos nehmen möchte, findet in diesem Buch eine wertvolle Quelle.

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Unter der Adresse http://release-it.org/ findet sich die Website zum Buch. Das Inhaltsverzeichnis liest sich vielversprechend – ich hoffe ich habe bald Gelegenheit dazu, mir das Buch zu Gemüte zu führen.

Die Kapitel sind mit Berichten aus der Praxis und Exkursen externer Autoren angereichert und ich konnte einige bekannte Namen unter den Beteiligten ausmachen. Es war mir eine Freude und Ehre, zum Kapitel 4.1 "Team - Arbeitsformen in der Softwareentwicklung" einen Exkurs über das Arbeiten in einer virtuellen Firma am Beispiel von MySQL beisteuern zu dürfen. Zum Thema "Community Management" hat Alexandra Leisse von Nokia/Qt einen interessanten Exkurs geschrieben, dem ich voll und ganz zustimme

Testing Drupal 7 on a virtual appliance with MySQL 5.1 and the InnoDB plugin

nospam@example.com (Lenz Grimmer) — Sat, 18 Sep 2010 00:37:18 +0200

The Drupal community just recently released another alpha test release of their upcoming Drupal 7 version, to shake out the remaining bugs and to encourage more users to test it.

If you would like to give it a try, but you don't have a free server handy, how about using a virtual machine instead? Using the fabolous SuSE Studio, I've created an appliance based on openSUSE 11.3, Drupal 7.0-alpha7 and MySQL 5.1 with the InnoDB plugin and strict mode enabled (both for the SQL mode and InnoDB mode. Using this configuration helps to ensure that Drupal works well with the current version of MySQL/InnoDB and does not use any "questionable" SQL statements. This might be especially interesting for additional modules - Drupal core did not reveal any problems using strict mode so far.

You can download disk images for VMware/Virtualbox/KVM or XEN from the SUSE Gallery (free login required). Just boot the appliance in your virtualization application of choice, choose your keyboard layout and step through the network configuration and Time Zone selection. Once the appliance has booted up and the login: prompt appeared, point your web browser to the appliance's IP address to start the Drupal installation/configuration. MySQL has been pre-configured, there is an empty database named "drupal" and a user "drupal" with the same password to access it. You just need to enter this information in the Drupal Database configuration dialogue during the installation. Anything else can be configured to your liking.

After you have finished the installation, you can toy around with a fresh Drupal 7 installation! Install additional modules, change the themes, add content. And make sure to report all bugs that you run into while doing so! Have fun.