Docker Introduction: From Raspi Docker Swarm Cluster to OCCS and Wercker. Recording https://www.youtube.com/watch?v=Cs7XmaI3OLc

1. munz & more
Docker Live Hacking
From Raspi to OCCS & Wercker
Oracle CODE 2017 SFO Dr. Frank Munz

2. 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 and
one Cloud book

3. 3 things about
Docker

4. Solves the “Worked For Me!” issue
munz & more #4
OS tools, JDK,
patches, database
driver, libs,
appserver, domain,
deployment, tools,
scripts
Docker
OS utils, JDK, patches, database driver, 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

5. Docker in the Cloud?
Supported by every major cloud provider:
munz & more #5
On premise -> all clouds
Docker
Registry
Docker Container Service
EC2 Container Service
Google Container Engine
Azure Container Service
Bluemix Containers

6. Docker Registry

7. fancy a demo?

8. Security

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

10. vs.

11. 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 images
10s of thousands

12. Oracle Options

13. WebLogic
in a Docker
Container!

14. Official Support
#14^
Oracle support
does not require
you to use the
provided Docker
files
Oracle Product Official Support
GlassFish
MySQL yes
NoSQL
OpenJDK
Oracle Linux yes
OracleCoherence yes
OracleDatabase yes
OracleHTTPServer yes
OracleJDK yes
OracleTuxedo yes
OracleWebLogic yes

15. 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

16. 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 kB
Step 1 : FROM oraclelinux:latest
latest: Pulling from library/oraclelinux
10ec637c060c: Downloading 4.865 MB/97.84 MB
...
$ sh buildDockerImage.sh -g -v 12.2.1.1
...
https://github.com/oracle/docker-images

17. http://www.oracle.com/us/pro
ducts/middleware/cloud-app-
foundation/weblogic/weblogic
-server-on-docker-wp-
2742665.pdf
Oracle Whitepaper
WebLogic on Docker

18. Orchestration /
Cluster Manager

19. Cluster Manager Options
On Premise Cloud
Docker Swarm Docker 1.12 Docker DC (EE)
Kubernetes DIY Google / MS
Oracle Oracle Registry
Oracle Git
Oracle CCS
munz & more #19

20. localhost is usually the
wrong setting in a
distributed system

21. Welcome
Mini J

22. DIY Raspi Docker Cluster
munz & more #22
Component Price
Raspi 4x 38€
Micro SD 4x 11€
Power 28€
Wifi 22€
Case 30€
Wires 10€

23. 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

24. 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

25. Docker Swarm
• Native Docker cluster with same API as
a single engine -> part of Docker
• Fast provisioning, about 500 msec
• Scheduling: spread, binpack, rand
• No insecure mode J
munz & more #25

26. 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

27. 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

28. 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

29. 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

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

31. Docker Containers in Kubernetes
munz & more #31

32. Docker Swarm
munz & more #32
https://blog.docker.com/2016/03/swarmweek-docker-swarm-exceeds-kubernetes-scale/

33. Managed Enterprise
Solution for running
Docker?

34. OCCS

35. 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

36. fancy a demo?

37. Dashboard

38. Services
munz & more #38

39. Ressource Pools
munz & more #39

40. Service Editor

41. Deployment Pulls Image
munz & more #41

42. Running Grafana in OCCS
munz & more #42

43. 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

44. Webcasts on Youtube
munz & more #44
https://www.youtube.com/watch?v=YFWAUEjtTpk https://www.youtube.com/watch?v=aRj0WK6uids

45. How to create and deploy
Docker images in an enterprise
environment?

46. Wercker

47. 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

48. https://app.wercker.com
munz & more #48

49. fancy a demo?

50. 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

51. TL;DR @docker #cloud
Docker 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

52. 3 Membership Tiers
• Oracle ACE Director
• Oracle ACE
• Oracle ACE Associate
bit.ly/OracleACEProgram
500+ Technical Experts
Helping Peers Globally
Connect:
Nominate yourself or someone you know: acenomination.oracle.com
@oracleace
Facebook.com/oracleaces
oracle-ace_ww@oracle.com

53. Sign up for Free Trial
http://cloud.oracle.com

54. www.munzandmore.com/blog
facebook.com/cloudcomputingbook
facebook.com/weblogicbook
@frankmunz
https://www.linkedin.com/in/
frankmunz/
youtube.com/weblogicbook
-> more than 50 web casts
Don’t be
shy J