munz & more

Docker Live HackingFrom Raspi to OCCS & Wercker

Oracle CODE 2017 SFO Dr. Frank Munz

2

Dr. Frank Munz

• Founded munz & more in 2007• 17 years Oracle Middleware,Cloud, and Distributed Computing

• Consulting and High-End Training

• Wrote two Oracle WLS andone Cloud book

3 things aboutDocker

Solves the “Worked For Me!” issue

munz & more #4

OStools,JDK,patches,database

driver,libs,appserver,domain,deployment,tools,

scripts

Docker

OSutils,JDK,patches,databasedriver,libs,appserver,domain,deployment,tools,scripts

Integration,Performance,Acceptance

Testing

Production

dockerize it!

You can pass environment variables for specific settings e.g. in prod

Docker Registry

Docker in the Cloud?

Supported by every major cloud provider:

munz & more #5

On premise -> all clouds

DockerRegistry

DockerContainerService

EC2ContainerService

GoogleContainerEngine

AzureContainerService

Bluemix Containers

Docker Registry

fancy a demo?

Security

$ docker run -d –p 8080:9999 fmunz/micro

vs.

A stranger gives you a box at night and asks you to connect it to your company network:

Would you do it?

what should be your biggest nightmare:

unknown and unofficial images10s of thousands

Oracle Options

WebLogicin a DockerContainer!

Official Support

#14^

Oracle support does not require you to use the provided Docker files

OracleProduct OfficialSupport

GlassFish

MySQL yes

NoSQL

OpenJDK

OracleLinux yes

OracleCoherence yes

OracleDatabase yes

OracleHTTPServer yes

OracleJDK yes

OracleTuxedo yes

OracleWebLogic yes

Oracle and Docker

Get Oracle images:• Docker registry • DIY: Dockerfile from Oracle github

To run Oracle Docker containers• Build and deploy with Wercker• Oracle Container Cloud Service

munz & more #15

https://github.com/oracle/docker-images

Just Drop Server JRE and WLS Installer

munz & more #16

$ cd java-8$ docker build -t oracle/jdk:8 .Sending build context to Docker daemon 4.096 kBStep 1 : FROM oraclelinux:latestlatest: Pulling from library/oraclelinux10ec637c060c: Downloading 4.865 MB/97.84 MB...

$ sh buildDockerImage.sh -g -v 12.2.1.1...

https://github.com/oracle/docker-images

http://www.oracle.com/us/products/middleware/cloud-app-foundation/weblogic/weblogic-server-on-docker-wp-2742665.pdf

Oracle Whitepaper WebLogiconDocker

Orchestration /Cluster Manager

Cluster Manager Options

OnPremise CloudDocker Swarm Docker1.12 DockerDC(EE)Kubernetes DIY Google/MSOracle Oracle Registry

OracleGitOracle CCS

munz & more #19

localhost is usually the wrong setting in a distributed system

Welcome

Mini J

DIY Raspi Docker Cluster

munz & more #22

Component Price

Raspi 4x38€

MicroSD 4x11€

Power 28€

Wifi 22€

Case 30€

Wires 10€

Kubernetes (K8s)

• Kicked off by Google’s Borg • Most active github project• Orchestration for containers, e.g. Docker• Declarative configuration• Service discovery• Rolling upgrades

munz & more #23

K8s

• YAML configuration• Pod: Container(s) sharing IP, network, filesystem

– IP is ephemeral– Uses Labels

• Replication Controller -> Replica Set– Manages PODs (restarts replicas based on labels)

• Services– Proxy for pod– Permanent IP

munz & more #24

Docker Swarm

• Native Docker cluster with same API asa single engine -> part of Docker

• Fast provisioning, about 500 msec• Scheduling: spread, binpack, rand• No insecure mode J

munz & more #25

Design Goals for Mini

• Hands-on Raspi experience• Distributed Kubernetes setup

& Docker Swarm setup • HA / failover / rolling updates• Have a fun project

munz & more #26

Others have build Raspi clusters as well and a lot of credit goes to them, e.g. to Roland Huss, Alex Ellis

etc

Design Decisions for Mini

• Hypriot Linux• 4 node cluster• ARM based -> runs ARM Docker images• Better I/O throughput due to separate WIFI chip • Wifi router in hotspot mode

– Mac OS issue with NAT • DIY: github

https://github.com/fmunz/raspicluster

munz & more #27

Paper bag Computer Raspberry Pi

• 1.2 GHz Quad Core ARM cortex-a53• RAM: 1 GB LPDDR2 Speicher• Dual Core VideoCore, 1920x1080• Bluetooth• 802.11 B/G WIFI• Boots from micro SD card• 38 €

munz & more #28

Kubernetes or Swarm?

• Swarm wasn’t impressive when released,but this has changed

• Swarm is much easier to understand and to operate

• Swarm covers a lot of what K8s does• Swarm is tightly linked to Docker API

-> harder to replace Docker with e.g. Rocket

munz & more #29

Google Kubernetes

munz & more #30https://blog.docker.com/2016/03/swarmweek-docker-swarm-exceeds-kubernetes-scale/

Docker Containers in Kubernetes

munz & more #31

Docker Swarm

munz & more #32

https://blog.docker.com/2016/03/swarmweek-docker-swarm-exceeds-kubernetes-scale/

Managed Enterprise Solution for running

Docker?

OCCS

OCCS

• Easy way to run Docker container in Oracle cloud

• No need to install Docker, Kubernetes, buy machines etc.

• Integrates with Docker hub and Oracle Container registry

• Does not use Kubernetes or Docker Swarm

fancy a demo?

Dashboard

Services

munz & more #38

Ressource Pools

munz & more #39

Service Editor

Deployment Pulls Image

munz & more #41

Running Grafana in OCCS

munz & more #42

Grafana Example

• Grafana Docker image• Runs on OCCS• Measures Oracle Cloud DNS/ping from

worldwide locations• Run it on OCCS without knowing much

about Docker or Grafana!

munz & more #43

Webcasts on Youtube

munz & more #44

https://www.youtube.com/watch?v=YFWAUEjtTpk https://www.youtube.com/watch?v=aRj0WK6uids

How to create and deploy Docker images in an enterprise

environment?

Wercker

Wercker

• Recently acquired by Oracle• Pipelines execute steps on code

– Pipelines == series of steps– Execute inside Docker container

• Workflows == chained and branched pipelines• Quickly provision ready to run infrastructure

– Push images to any registry– Restart OCCS via webhooks

munz & more #47

https://app.wercker.com

munz & more #48

fancy a demo?

Predictions

• Swarm will take its share from Kubernetes.• OCCS is an easy solution in OPC • You will not dockerize 90% of your enterprise IT

in the next 24 months.• Docker is like the new Linux.

Be ready to experience that feeling we had with Linux 13 years ago J

• Docker is (sometimes) the new PaaS.munz & more #50

TL;DR @docker #cloudDocker is used in production /cross cloud / just Docker is not enough / #swarm is the easier #k8s / not a security risk / many products offered as images / OCCS & Wercker saves you from heavy lifting / Oracle caught the trend! / consider cloud services.

@frankmunz

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-> more than 50 web casts

Don’t be

shy J