The document summarizes a presentation about containers in Azure. It introduces Docker and Kubernetes as tools for running open source applications on Azure. It notes shortcomings of traditional virtual servers, such as difficulty scaling and versioning applications. Docker is presented as a way to package code and dependencies, while Kubernetes provides container orchestration for tasks like scheduling and updating containers. The presentation demonstrates using OpenShift on APPUiO, a managed container platform, as an alternative to running containers directly on Azure.

1. VSHN AG I Neugasse 10 I 8005 Zürich I T 044 545 53 00 www.vshn.ch
Azure Cloud User Group Switzerland 18.1.2017
Containers in Azure
Aarno Aukia
VSHN AG

2. VSHN AG I Neugasse 10 I 8005 Zürich I T 044 545 53 00 www.vshn.ch
Agenda
●
About Aarno / VSHN
●
How were we running OSS applications
on Azure ?
●
Shortcomings & wishes
●
What is Docker, Kubernetes, OpenShift ?
●
Why use them ?
●
Examples

3. VSHN AG I Neugasse 10 I 8005 Zürich I T 044 545 53 00 www.vshn.ch
Who
Aarno Aukia, CTO & co-founder
ETH → Google → Atrila → VSHN
@aarnoaukia http://about.me/aarno
VSHN - the DevOps Company
Since 2014: 17 people in Zürich
Running web applications on-premises and
in the clouds making both visitors and
developers happy
https://vshn.ch @vshn_ch
Opensource Azure partner
Docker Partner

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How were we running OSS applications on
Azure ?
Virtual servers
Managed by Puppet/Ansible

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Shortcomings
Scaling up/down takes manual effort &
time
PHP/MySQL/Solr/ElasticSearch
versions/plugins defined by configuration
management for each server, not for each
project/deployment and have to be
communicated separately
Adding new technology (e.g. npm/grunt) is
complex

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Wishful thinking...
Solves build-ship-run workflow, integrates
in CI/CD, DevOps & self-service
Handles the standard software plattform
problems: scaling, hitless deployment,
monitoring, backup, etc
Open standards: 100% open source,
backed by big community
No lock-in, free to choose any provider,
works on any infrastructure
Extensible with API

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Docker
Lightweight container runtime
Package code, runtime, plugins, libraries
Helps you to use 12-Factor-App pattern
(explicit entrypoint, port, volume
configurations, see https://12factor.net)
Automatically built, quickly started, one-
time use
https://blog.vshn.ch/2016/11/docker
https://github.com/docker/docker

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From container to production ?

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Kubernetes
Container orchestrator:
How many of a kind should be running ?
On which IP/port/machine are they ?
How do they find each other ?
What happens when a container/machine
running them disappears ?
Scaling, load balancing, rolling
deployments
https://blog.vshn.ch/2016/08/openshift
https://github.com/kubernetes/kubernete
s

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Container orchestration

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OpenShift
How to get the application in the
container ?
Web-GUI, CLI client, REST-API
https://blog.vshn.ch/2016/08/openshift
https://github.com/openshift/origin

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OpenShift

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APPUiO
Managed Docker, Kubernetes, OpenShift
Flavours: Big shared plattform in the
cloud, private plattform in the cloud or on-
premises
Hosted in Switzerland (ISO/FINMA-
certified) or whereever you want (Azure)
Community for Developers and
Operations, Dev & Ops = DevOps
Free monthly half-day training TechLabs
Starting at CHF 40/mt in Switzerland

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Why?
You have full control over the container
contents → no more old versions by the
hosting provider
You control the build, deploy process from
the GUI/CLI/API
Plattform takes care of seamless
deployment, SSL, load balancing, scaling,
system updates, monitoring, backups,
hardware, storage, network, etc
You don't need to handle Docker,
Kubernetes, OpenShift internals if you
don't want to

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Demotime
Links:
https://github.com/arska/phpinfo.git
https://github.com/arska/example-php-sti-
helloworld.git
https://github.com/arska/springdemo
https://github.com/arska/python-hellowor
ld

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Bonus
Creating a template:
oc export bc,is,svc,dc --as-
template=mytemplate -o json