Telekom Techtalk - Practical DevOps

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This document summarizes a presentation given by Schlomo Schapiro on practical DevOps. The presentation discusses ImmobilienScout24, a real estate classifieds website with 2 billion page views per month served from 2 data centers containing 800 virtual machines total. It describes ImmobilienScout24's IT organization of around 150 employees split across 30 cross-functional teams. The presentation then covers various DevOps tools and practices used at ImmobilienScout24 like Yum, Nexus, and YADT for configuration management and continuous delivery.

Technologie

www.immobilienscout24.de

Practical DevOps

Berlin | 24.11.2011 | Schlomo Schapiro
Systemarchitekt, Open Source Evangelist

License: http://creativecommons.org/licenses/by-nc-nd/3.0/

www.ImmobilienScout24.de

2 billion PI per month
2 data center, ~800 VM
total of ~500 employees
 ~30 crossfunctional IT
teams
 ~150 in IT
14 years in business
part of Deutsche Telekom

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https://code.google.com/p/yadt

https://code.google.com/p/nexus-yum-plugin

Slide 8 | Practical DevOps | Schlomo Schapiro

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Continuous Delivery Platform

Business
Decision
To go
Live

All Humans
are on the AUTOMATION Scale Out
Same Side Data Centers

Slide 13 | Practical DevOps | Schlomo Schapiro

Dude, you are on the same team!

The tool is you!

Slide 14 | Practical DevOps | Schlomo Schapiro

Thank you very much!
Please contact me for further
questions and discussions.
Kontakt:
Immobilien Scout GmbH Fon: +49 30 243 01-1229
Andreasstraße 10 Email: schlomo.schapiro@immobilienscout24.de
10243 Berlin URL: www.immobilienscout24.de

Slide 15 | Practical DevOps | Schlomo Schapiro

Code
SVN
Entwick-
Deployment- Deployment- Q/A
lungs- werkzeug A werkzeug B Server
Server

Produk-
DEBUG
Konfigurations-
werkzeug A Deployment-
werkzeug B
tiv-
HÖLLE Server

Konfigurations-
werkzeug B
Beipackzettel
Email für Features Email
Wiki in einem Wiki
Release
Entwickler Betriebler

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Entwick-
lungs-
YUM Server
Code Tea /
SVN m City DT
Entwickler u.a. YA

YADT / YUM
Q/A
S VN Server
onfig
Config YADT C YA
SVN D
T
/
YU
Beipackzettel M Produk-
für Features
in einem tiv-
Betriebler
Release Server

Slide 17 | Practical DevOps | Schlomo Schapiro

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GUUG FFG 2017 - DevOps for Everybody - How the entire company can benefit fro...

Schlomo Schapiro

Do you use Cloud? Why? What about the 15 year legacy of your data center? How many Enterprise vendors tried to sell you their "Hybrid Cloud" solution? What actually is a Hybrid Cloud? Cloud computing is not just a new way of running servers or Docker containers. The interesting part of any Cloud offering are managed services that provide solutions to difficult problems. Prime examples are messaging (SNS/SQS), distributed storage (S3), managed databases (RDS) and especially turn-key solutions like managed Hadoop (EMR). Hybrid Cloud is usually understood as a way to unify or standardize server hosting across private data centers and Public Cloud vendors. Some Hybrid Cloud solutions even go as far as providing a unified API that abstracts away all the differences between different platforms. Unfortunately that approach focuses on the lowest common denominator and effectively prevents using the advanced services that each Cloud vendor also offers. However, these services are the true value of Public Cloud vendors. Another approach to integrating Public Cloud and private data centers is using services from both worlds depending on the problems to solve. Don't hide the cloud technologies but make it simple to use them - both from within the data center and the cloud instances. Create a bridge between the old world of the data center and the new world of the Public Cloud. A good bridge will motivate your developers to move the company to the cloud. Based upon recent developments at ImmobilienScout24, this talk tries to suggest a sustainable Cloud migration strategy from private data centers through a Hybrid Cloud into the AWS Cloud. Bridging the security model of the data center with the security model of AWS. Integrating the AWS identity management (IAM) with the existing servers in the data center. Secure communication between services running in the data center and in AWS. Deploying data center servers and Cloud resources together. Service discovery for services running both in the data center and AWS. Most of the tools used are Open Source and this talk will show how they come together to support this strategy: AWS credential provider for employees and data center servers: http://immobilienscout24.github.io/afp/ Cloud Formation automation: https://github.com/ImmobilienScout24/cfn-sphere Compliancy with European privacy laws: https://github.com/ImmobilienScout24/aws-monocyte

OSDC 2016 - Hybrid Cloud - A Cloud Migration Strategy

Schlomo Schapiro

How many log levels do you know? How many log levels are actually useful? What is the practical difference between WARNING and NOTICE? I believe that in a world of automation, I need only two log levels: ERROR and everthing else. ERROR means that I as a human should take action. Everything else is irrelevant for me. All the other log levels are IMHO a remnant of the past from the last century. This ignite talk looks at the WARNING problem from both a Dev and an Ops perspective in order to find a useful definition for the age of automation. See http://blog.schlomo.schapiro.org/2015/04/warning-is-waste-of-my-time.html for blog article with more info.

WARNING is a waste of my time

Schlomo Schapiro

DevOps has successfully conquered many IT departments and brought a new era of collaboration. With DevOps developers gain more control over the production environment and can do more on their own. Admins learn to code their infrastruture and to build delivery chains. But what about the risk of allowing more people to bring changes into production? Advanced automation can also quickly propagate human error to all the platform. How to trust everybody with production level access? Common wisdom has it that test efforts should be related to the risk of a change. However, the reality is different: Developers build elaborate automated test chains to test every single commit of their application. Admins regularly “test” changes on the live platform in production. But which change carries a higher risk of taking the live platform down? What about the software that runs at the “lower levels” of your platform, e.g. systems automation, provisioning, proxy configuration, mail server configuration, database systems etc. An outage of any of those systems can have a financial impact that is as severe as a bug in the “main” software! This talk gives a quick introduction into DevOps and continues to explore how test automation in operations and in infrastructure development helps to mitigate the risks associated with open collaboration between development and operations. Based on recent developments at ImmobilienScout24 valuable lessons can be learned for every IT environment: How to to combine the goals of stable operations and quickly bringing changes into production through test automation and delivery chains. Detailed examples can be found in this German Linux Magazin article: http://www.linux-magazin.de/Ausgaben/2014/09/Testgetrieben

SE 2015 DevOps Risk Mitigation - Test Driven Infrastructure

Schlomo Schapiro

How Open Source, Agile Methods and DevOps come together at ImmobilienScout24. Was verbindet Open Source, Agiles Mindset und DevOps? In der richtigen Kombination dieser Themen entsteht für die IT eine neue Basis der Zusammenarbeit. Ein Rückblick auf die letzten 6 Jahre bei ImmobilienScout24 zeigt, wie die Anwendung in der Praxis unsere IT-Abteilung voran gebracht hat. Bei der Cloudmigration profitieren wir insbesondere von der offenen Kultur in der Firma und der Community.

DevOps, Agile and Open Source at ImmobilienScout24

Schlomo Schapiro

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