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A system architect guide - ten ways to ruin your cloud experience ...and how to mitigate them

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Cloud computing and IaaS are powerful tools that hold many tempting promises. With Linux leading in this field, IaaS is often one of the first mission critical Linux deployments in enterprises. Doomed …

Cloud computing and IaaS are powerful tools that hold many tempting promises. With Linux leading in this field, IaaS is often one of the first mission critical Linux deployments in enterprises. Doomed to do it right, implementing a Linux cloud is hard work, and you risk both your managment and users losing faith if you stumble into ten common pitfalls. Nils explains to engineering architects, operations engineers, and technical system managers how to circumvent common problems and comes up with hints to overcome them. His audience benefits from over 15 years' first-hand experience in designing secure and reliable infrastructure projects in data centers. Real-life examples from past and present project illustrate the challenges engineers and managers face on their way to the cloud.

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  • 1. A System Architect Guide: Ten Ways to Ruin Your Cloud Experience ... ... and How To Mitigate Them LinuxCon Europe, October 22, 2013 in Edinburgh, Scotland Nils Magnus inovex GmbH Senior System Engineer Wir nutzen Technologien, um unsere Kunden glücklich zu machen. Und uns selbst.
  • 2. Nils Magnus • • • • Senior System Engineer with inovex GmbH lives in Munich, Germany plans, designs, consults, and actually implements scalable data center solutions for hist clients • if you are an experienced and curious engineer, looking for challenges and a good package: we hire! • • • • Member of the Board and Program Chair at LinuxTag next time in Berlin, Germany plans, organizes, and actually hosts one of Europe's most traditional conference and expo since 1996 if you are an experienced speaker with a hot subject to talk about to your peers: we want your talk in our cfp Nils Magnus: Ten Ways To Ruin Your Cloud Experience (and how to mitigate them) – LinuxCon Europe, Edinburgh, Scotland – 22.10.2013
  • 3. Use the term "cloud computing" What is „cloud computing, anyway?“ Open Stack, OwnCloud, SugarCRM, … No need to confuse your engineers Nils Magnus: Ten Ways To Ruin Your Cloud Experience (and how to mitigate them) – LinuxCon Europe, Edinburgh, Scotland – 22.10.2013
  • 4. Rely on „feelings“ Requirements are individual „I believe NFS does not scale“ Define a spec. Challenge the competitors. Projects and vendors are usually no idiots. Nils Magnus: Ten Ways To Ruin Your Cloud Experience (and how to mitigate them) – LinuxCon Europe, Edinburgh, Scotland – 22.10.2013
  • 5. Do „handicraft“ your environments It's tempting to do apparently nonrecurring steps by hand for „quick wins“ „Let me just configure this interface“ Mandatory to automate your „make world“ from end to end Nils Magnus: Ten Ways To Ruin Your Cloud Experience (and how to mitigate them) – LinuxCon Europe, Edinburgh, Scotland – 22.10.2013
  • 6. Neglect demanding your service levels Cloud providers offer SLAs. Most clients hesitate to challenge them. „Well, they have a steep learning curve with that filer, too ...“ SLAs are expensive. Either pay and use them – or just save the money for something else Nils Magnus: Ten Ways To Ruin Your Cloud Experience (and how to mitigate them) – LinuxCon Europe, Edinburgh, Scotland – 22.10.2013
  • 7. Broaden the gap between developers and ops Resoponsibility ping-pong and fingerpointing don't solve problems „That crappy artifact doen't deploy, so what?“ – „Why don't those weirdos just run our scripts?“ Assign a dev the „deputy admin of the week“ role. Send the engineers to a coding dojo. Nils Magnus: Ten Ways To Ruin Your Cloud Experience (and how to mitigate them) – LinuxCon Europe, Edinburgh, Scotland – 22.10.2013
  • 8. Implement your individual tools for standard tasks Reinvent the wheel. Not-invented-here syndrome. „Those configuration management systems are all nonsense. Mine's perfect.“ Standardization is a strong weapon. Join forces by improving existing tools Nils Magnus: Ten Ways To Ruin Your Cloud Experience (and how to mitigate them) – LinuxCon Europe, Edinburgh, Scotland – 22.10.2013
  • 9. Keep a generous buffer of ressources Utilizations below 90% are a waste of ressources in virtualized environments „Let's upgrade, we have an average load of 0.6 over the last week“ If your infrastructure does not scale elastically, why did you go for the „cloud“ in the first place? Nils Magnus: Ten Ways To Ruin Your Cloud Experience (and how to mitigate them) – LinuxCon Europe, Edinburgh, Scotland – 22.10.2013
  • 10. Set up individual maturity environments Software did work in the test and integration environment, but failed in production „I was never told there could ever be more than a single database slave“ Configure all environments from the same sources, use the same scripts and assign comparable sizing Nils Magnus: Ten Ways To Ruin Your Cloud Experience (and how to mitigate them) – LinuxCon Europe, Edinburgh, Scotland – 22.10.2013
  • 11. Don't bother yourself with scalability Single ressource become bottlenecks sooner than you expect „We won't need multiple application servers“ Planning scalability might be a challenge, squashing it into existing environments is way beyond price Nils Magnus: Ten Ways To Ruin Your Cloud Experience (and how to mitigate them) – LinuxCon Europe, Edinburgh, Scotland – 22.10.2013
  • 12. Try to find a technical solution for every challenge We engineers like to play with our toys. But there might be problems, that do not need technical solutions „How should we implement the SD backed, hot failover HA enhanced, LDAP driven, role-based user management for the both of us?“ Less is more Nils Magnus: Ten Ways To Ruin Your Cloud Experience (and how to mitigate them) – LinuxCon Europe, Edinburgh, Scotland – 22.10.2013
  • 13. Thanks for listening! Questions? Contact Nils Magnus Senior System Engineer inovex GmbH Office Munich Valentin-Linhof-Str. 2 81829 Munich, Germany +49-173-3181-057 nils.magnus@inovex.de Agent L9 Oxycryocrypt Nils Magnus: Ten Ways To Ruin Your Cloud Experience (and how to mitigate them) – LinuxCon Europe, Edinburgh, Scotland – 22.10.2013

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