Many craftWowSuch createhttps://maciej.lasyk.info/2015-03-12T00:00:00+01:00Conferences schedule for Spring 20152015-03-12T00:00:00+01:002015-03-12T00:00:00+01:00Maciej Lasyktag:maciej.lasyk.info,2015-03-12:2015/Mar/12/conferences-schedule-for-spring-2015/<p><center><img alt="Its me!" src="https://maciej.lasyk.info/images/maciek.jpg" /></center></p>
<h3>Spring is near, so conference season is almost here!</h3>
<p>As a friend of mine <a href="https://twitter.com/j_palka">Jarek Pałka</a> told me
yesterday - this is like a snowball. You give your first talk, then next and
next and you event don't blink an eye and you find yourself in a place where
some year you have 5 talks scheduled in a row during one month.</p>
<p>But.. I really do like it. Conferences are great. Just like a sport - you
prepare, train, test, rest and again over and over again. Then there is this
day where you can finally unleash accumulated endorphines and let yourself into
this flow of talks, discussions, chip-chats and off-the-record confabulations
;)</p>
<p>And then there is it. Couple of weeks later someone tries to get hired in your
company just because your presentation showed guys that it is really a good
place. Months later it appears that your idea was developed more and someone
else in some other event talks about it. There is more - you can attract people
to any Open-Source project you want - just tell them why it rocks!</p>
<p>Also it is the only place when you can actually meet the fundaments of our IT
world. One of my biggest dreams was photo w/Linus Torvalds. And here it is
(taken 3 years ago at LinuxCon Barcelona):</p>
<p><center><img alt="LinuxCon" src="https://maciej.lasyk.info/images/linuxcon.jpeg" /></center></p>
<p>Ahh I simply <3 that. Also I do love travelling w/my pair of running shoes
getting up @6:00 just to have a morning portion of endorphines before starting
next conference day on a route I completely don't know.</p>
<h3>The Spring Schedule aka "Come get some!"</h3>
<ul>
<li><a href="http://opensourcesummit.pl">OpenSource Summit 2015</a> - 2015-03-24 - this is a
one - day event, which will bring together all the greatest minds of our
Polish Open - source scene. I'll give there talk about <a href="http://opensourcesummit.pl/maciej-lasyk/">Docker
containers</a>. And finally I'll have
opportunity to see <a href="">Grzegorz Nosek's</a> presentation about Ansible and take
part in his trainings!</li>
<li>#DevOps meeting, Atmosphere Shuttle - 2015-03-26 - this is a DevOps meetup
where I'll give a talk about changing old & stiff envs into more devops. This
event is part of a tour which main job is to introduce Atmosphere Conference.</li>
<li><a href="http://12.sesja.linuksowa.pl/">12th Linux Session</a> - 2015-04-(18-19) - I'll
give here a talk about Orchestrating Docker Containers. And there will be
Lennart Poettering speaking there, so fingers crossed to catch him and thanks
him for his great work on Systemd!</li>
<li><a href="http://www.4developers.org.pl/">4Developers</a> - 2015-04-20 - I'll have 2
talks here. First in the "Application Architectures" track titled [Under the
dome (of failure driven
pipeline)](http://www.4developers.org.pl/en/agenda/lecture/under-dome-failure-driven-pipeline/]
and second <strong>Continuous Security in DevOps</strong> (which is still not published) in
the security track.</li>
<li><a href="http://www.atmosphere-conference.com/">Atmosphere Conference</a> -
2015-05-(18-19) - this is the biggest DevOps event in Poland. I'll be there
for the second time giving a talk about Enterprise DevOps.</li>
</ul>Invitation to AtmosphereConf2014-05-12T00:00:00+02:002014-05-12T00:00:00+02:00Maciej Lasyktag:maciej.lasyk.info,2014-05-12:2014/May/12/invitation-to-atmosphereconf/<p><center><img alt="IMG" src="https://maciej.lasyk.info/images/atmosphere-2014-300x168.jpg" /></center></p>
<p>I’ll give a talk at <a href="https://atmosphere-conference.com/">AtmosphereConf</a> – this event is all about performance and scalability, the biggest one in Poland of this kind. It remembers me about VelocityConf that I attended couple of years ago.</p>
<p>I’ll be there as a part of Fedora Project. And here is the abstract of my talk:</p>
<p>Scaling and securing node.js apps
After few years of node.js in operation we know it’s very fast. We all heard stories about backend services running with the help of node.js and V8 core. But what we have learned about the security of such applications? What are the major threats here? I’ll explain how to create node.js apps in a secure and reliable way. Also – I’ll show how those could be scaled easily with (or without) help of Linux containers (Docker based) or jail – systems like Selinux Sandbox or libvirt sandbox.</p>
<p>There’s still possibility to <a href="https://rejestracja.proidea.org.pl/registration/form.html?conferenceId=BD2C369D83E5939D36537511DF9E5D81">register</a> – and this event is really full of great people and talks – just can’t wait till I’m there :)</p>node.js security slides from SEConference 20142014-05-10T00:00:00+02:002014-05-10T00:00:00+02:00Maciej Lasyktag:maciej.lasyk.info,2014-05-10:2014/May/10/nodejs-security-slides-from-seconference-2014/<p><center><img alt="IMG" src="https://maciej.lasyk.info/images/node-js-S.jpg" /></center></p>
<p>Yesterday I gave talk about node.js security during SEConference here in Kraków. It was fun – especially afterparty where we could do some nerd – talking about our security concerns :)</p>
<p>Oh and that part:</p>
<p>me: “- hey, where did you get this Dragon Sector t-shirt?”</p>
<p>vnd: “- because I’m the member of Dragon sector”</p>
<p>me: “- LOL, that explains everything”</p>
<p>And I was wondering why this guy is called “vnd” – just like that one from Dragon Sector. It was so obvious – lolme ;)</p>
<p>Ok so now – slides:</p>
<iframe src="//www.slideshare.net/slideshow/embed_code/key/gSGNb8sEtqoBZu" width="595" height="485" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" style="border:1px solid #CCC; border-width:1px; margin-bottom:5px; max-width: 100%;" allowfullscreen> </iframe>
<p><div style="margin-bottom:5px"> <strong> <a href="//www.slideshare.net/d0cent/nodejs-security" title="Node.js security" target="_blank">Node.js security</a> </strong> from <strong><a href="//www.slideshare.net/d0cent" target="_blank">Maciej Lasyk</a></strong> </div></p>Stop disabling SELinux – slides from my talk @ Krakow Infosec meetup2014-03-13T00:00:00+01:002014-03-13T00:00:00+01:00Maciej Lasyktag:maciej.lasyk.info,2014-03-13:2014/Mar/13/stop-disabling-selinux-slides-from-my-talk-krakow-infosec-meetup/<p><center><img alt="IMG" src="https://maciej.lasyk.info/images/post-38-pinguim-do-selinux.jpg" /></center></p>
<p>Every time you run setenforce 0, you make Dan Walsh weep. Dan is a nice guy and he certainly doesn’t deserve that. So see how not to disable SELinux and why it is so great :)</p>
<iframe src="//www.slideshare.net/slideshow/embed_code/key/9mMyW30WRpJqX9" width="595" height="485" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" style="border:1px solid #CCC; border-width:1px; margin-bottom:5px; max-width: 100%;" allowfullscreen> </iframe>
<p><div style="margin-bottom:5px"> <strong> <a href="//www.slideshare.net/d0cent/selinux-single" title="Stop disabling SELinux!" target="_blank">Stop disabling SELinux!</a> </strong> from <strong><a href="//www.slideshare.net/d0cent" target="_blank">Maciej Lasyk</a></strong> </div></p>Infosec meetup invitation2014-03-06T00:00:00+01:002014-03-06T00:00:00+01:00Maciej Lasyktag:maciej.lasyk.info,2014-03-06:2014/Mar/06/infosec-meetup-invitation/<p><center><img alt="IMG" src="https://maciej.lasyk.info/images/cyber-attacks-hicube-infosec-300x168.jpg" /></center></p>
<p>Next week there will be first Infosec group meetup. It’ll take place in BaseLab here in Kraków. I’ll give a #SELinux presentation there and that will be the beginning of the whole SELinux series. I’ll try to enlight all of you who still “setenforce 0”.</p>
<p>You can RSVP here: <a href="http://www.meetup.com/Infosec-Krakow/events/168455142/">http://www.meetup.com/Infosec-Krakow/events/168455142/</a></p>
<p>And remember one, very important thing, Dan is watching you!</p>
<iframe width="560" height="315" src="https://www.youtube.com/embed/o5snlP8Y5GY" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>RHEL/Fedora + Docker (and SELinux)2014-02-26T00:00:00+01:002014-02-26T00:00:00+01:00Maciej Lasyktag:maciej.lasyk.info,2014-02-26:2014/Feb/26/rhelfedora-docker-and-selinux/<p><center><img alt="IMG" src="https://maciej.lasyk.info/images/docker.png" /></center></p>
<p>It’s still fresh – I gave this talk a few hours ago at DevOPS meetup here in Krakow. There’s Dan Walsh’s surprise included ;)</p>
<iframe src="//www.slideshare.net/slideshow/embed_code/key/4sT9375823WPty" width="595" height="485" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" style="border:1px solid #CCC; border-width:1px; margin-bottom:5px; max-width: 100%;" allowfullscreen> </iframe>
<p><div style="margin-bottom:5px"> <strong> <a href="//www.slideshare.net/d0cent/docker-rhel" title="RHEL/Fedora + Docker (and SELinux)" target="_blank">RHEL/Fedora + Docker (and SELinux)</a> </strong> from <strong><a href="//www.slideshare.net/d0cent" target="_blank">Maciej Lasyk</a></strong> </div></p>High Availability Explained2014-01-29T00:00:00+01:002014-01-29T00:00:00+01:00Maciej Lasyktag:maciej.lasyk.info,2014-01-29:2014/Jan/29/high-availability-explained/<p><center><img alt="IMG" src="https://maciej.lasyk.info/images/DevOpsDays-300x212.png" /></center></p>
<p>Yesterday’s DevOPS meetup was great – we talked a <em>lot</em>, saw a few terrific talks, drank beer (water in my case :( ) & ate plenty of pizza ;) I gave talk about HA – you can see slides below:</p>
<iframe src="//www.slideshare.net/slideshow/embed_code/key/llGzVrHy4HPFQ9" width="595" height="485" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" style="border:1px solid #CCC; border-width:1px; margin-bottom:5px; max-width: 100%;" allowfullscreen> </iframe>
<p><div style="margin-bottom:5px"> <strong> <a href="//www.slideshare.net/d0cent/high-availability-explained" title="High Availability (HA) Explained" target="_blank">High Availability (HA) Explained</a> </strong> from <strong><a href="//www.slideshare.net/d0cent" target="_blank">Maciej Lasyk</a></strong> </div></p>Samsung R&D Linux Boot competition – smashed ;) / Concepts github repo created!2013-10-29T00:00:00+01:002013-10-29T00:00:00+01:00Maciej Lasyktag:maciej.lasyk.info,2013-10-29:2013/Oct/29/samsung-rd-linux-boot-competition-smashed-concepts-github-repo-created/<p><center><img alt="IMG" src="https://maciej.lasyk.info/images/Samsung-booth-11-520x245-300x141.jpg" /></center></p>
<p>During last Linux Autumn conference (check my recap here) I won competition run by guys from the platinum sponsor – Samsung R&D Centre. There were two topics to be covered – each on other interesting aspect of Linux tuning. First one was about polishing Linux security and the second – about speeding up the Linux boot process. I wrote answers to both topics, but the latter was the winning one.</p>
<p>I was asked about my ideas that I used during that competition a few times until then. So after yet another conversation I thought, that maybe it’s time to write those and make them public – why not – I didn’t discover the America – just wrote down some known facts ;)</p>
<p>So – I strongly believe that github is a good place to publish things like that. I created ‘concepts’ repo where I’ll push any ideas that in my opinion is worth of it. Never mind if those are my own concepts or I heard those on some conference. This way I’m publishing my “concepts” notebook from my Evernote.</p>
<p>Feel free to clone this repo here: https://github.com/docent-net/concepts</p>
<p>The competition winning idea is here: https://github.com/docent-net/concepts/tree/master/booter</p>
<p>And one more thing. This competition was awarded with this beauty Samsung Galaxy SIII (yes, it’s only box; I already have exactly the same phone, so this one is landing on E-Bay):</p>
<p><center><img alt="IMG" src="https://maciej.lasyk.info/images/1382195_10151717010150911_753129479_n-300x300.jpg" /></center></p>Linux Autumn 2013 – recap2013-10-13T00:00:00+02:002013-10-13T00:00:00+02:00Maciej Lasyktag:maciej.lasyk.info,2013-10-13:2013/Oct/13/linux-autumn-2013-recap/<p><center><img alt="IMG" src="https://maciej.lasyk.info/images/download-1-300x98.jpg" /></center></p>
<p>So this is it – Linux Autumn conference is over! We talked a lot, we hiked a beautiful mountain, we drank a loot of beer and meet new people. This year’s edition was placed in the Szczyrk – heart of Beskid Śląski and Żywiecki mountains – and weather was so great that i just couldn’t stay for all the talks inside the hotel and left for a while to take a hike to the biggest mountain in the hood (see images & videos that I shot on the end of this post).</p>
<p>The agenda was very interesting. I particularly liked:</p>
<ul>
<li>Pam_container – LXC + PAM + Python = ♥ (by Grzegorz Nosek). This topic is very close for me as I just falled in love with LXC.</li>
<li>Memory handling in Linux (by Maciej Nabożny). Performance topic are also very interesting for me – I spend a lot of time using strace / gdb on daily basis while developing some projects so it’s always nice to hear something new or to take a look from one’s perspective.</li>
<li>Smack – simple alternative to SELinux (by Rafał Krypa). I’m heavy SELinux user and also I just have to know about all the new security concepts. It was interesting but… I’ll stay with SELinux ;)</li>
<li>Know Your Tools – auditd (by Dariusz Puchalak). I use auditd on daily basis so just wanted to see how others do it. I can say – we all use it the way developer thought – so the proper way ;)</li>
<li>Take care of my logs (by Witold Duranek) – this was very interesting talk about marriage of Logstash, Elasticsearch, Kibana and RabbitMQ. Really great – something I will have to take a closer look & deploy.</li>
<li>Technomonopols (by Michał Woźniak) – this was flame & troll fight about out understaiding of the biggest social services monopolies. Quite interesting – and despite I hate troll fights & flame wars – this one draw my attention</li>
</ul>
<p>I also won the contest announced by guys from Samsung R&D Centre. There were two topics (improving Linux security and improving Linux boot time). I won Samsung Galaxy S3 thanks to my ideas about shortening the boot process time on Linux machines. I’ll write another post about that.</p>
<p>Unfortunately I didn’t make it to have a talk during this edition of Linux Autumn. Due to that I changed my worked recently I had too much things on my head and just weren’t able to prepare enough. I created 2 short lightning talks (about node.js security and managing resources with control groups) but unfortunately – there was no lightning talks event so I couldn’t give that presentations.</p>
<p>As I said – I love hiking the mountains so I took a trip to the summit of Skrzyczne mountain. You can view the photos below. I also created 2 time-lapse videos using my SGS3 – you can see dusk and dawn over this beautiful Skrzyczne mountain.</p>
<iframe width="560" height="315" src="https://www.youtube.com/embed/YU6r3S1eFq0" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<iframe width="560" height="315" src="https://www.youtube.com/embed/xiaeb61nQFU" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>