Docker Live Hacking: From Raspberry Pi to Kubernetes

Transcription

1 Docker Live Hacking: From Raspberry Pi to Kubernetes Hong Kong Meetup + Oracle CODE 2018 Shenzhen munz & more Dr. Frank Munz

2 Dr. Frank Munz Founded munz & more in years Oracle Middleware, Cloud, and Distributed Computing Consulting and High-End Training Wrote two Oracle WLS and one Cloud book 2

3 3 things about Docker

4 Solves the Worked For Me! issue OS utils, JDK, patches, database driver, libs, appserver, domain, deployment, tools, scripts Production dockerize it! Docker OS tools, JDK, patches, database driver, libs, appserver, domain, deployment, tools, scripts Integration, Performance, Acceptance Testing You can pass environment variables for specific settings e.g. in prod munz & more Docker Registry #4

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

6 Docker Registry

7 fancy a demo?

8 Security

9 docker run -d P fmunz/micro

10 vs.

11 A stranger gives you a box at night and asks you to connect it to your company network: what should be your biggest nightmare: unknown and unofficial images 10s of thousands Would you do it?

12 DB or WebLogic in a Docker Container!

13 Oracle Docker Images You have three main options 1. DIY: Dockerfile from Oracle github 2. Oracle Container Registry 3. Docker Hub munz & more #13

14 Oracle Whitepaper WebLogic on Docker ducts/middleware/cloud-appfoundation/weblogic/weblogic -server-on-docker-wp pdf

15 Orchestration / Cluster Manager

16 Orchestration Options On premises: Docker Swarm, Kubernetes Oracle Cloud, easy: Container Cloud Service (OCCS) Oracle Cloud Enterprise: Kubernetes Container Engine (OCE) Free CI/CD Wercker included munz & more #16

17 Welcome Mini J

18 Design Goals for Mini Hands-on Raspi experience Distributed Kubernetes setup & Docker Swarm setup HA / failover / rolling updates Have a fun project munz & more Others have build Raspi clusters as well. A lot of credit goes to Roland Huss, Alex Ellis etc #18

19 DIY Raspi Docker Cluster Component Price Raspi 4x 38 Micro SD 4x 11 Power 28 Wifi 22 Case 30 Wires 10 munz & more #20

20 K8s YAML configuration, declarative, uses labels Pod: Containers sharing IP, network, filesystem IP is ephemeral Replica Set (was Replication Controller) Manages PODs: restarts replicas Services Like a proxy, exposes pod Permanent IP munz & more #22

21 Docker Swarm Native Docker cluster with same API as a single engine -> part of Docker Fast provisioning, about 500 msec Various scheduling algorithms: spread, binpack, rand No insecure mode J munz & more #23

22 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 Industry standard: Kubernetes See Oracle, AWS, Azure, Google cloud Kubernetes supported by Docker munz & more #24

23 Kubernetes K8s components run as Docker containers munz & more #25

24 Could you debug it? munz & more #26

25 Docker Swarm munz & more #27

26 Managed Enterprise Solution for running Docker?

27 OCCS

28 OCCS Walkthrough

29 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 neither use Kubernetes nor Docker Swarm

30 OCE Managed Kubernetes

31 Standard Kubernetes kubectl CLI K8s admin kubectl run microg --image=fmunz/microg --port 5555 munz & more #33

32 Cloud Native Compute Foundation munz & more #34

33 munz & more #35

34 Wercker

35 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 #37

36 fancy a demo?

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38 Predictions Kubernetes is now de-facto standard for enterprises. You will not dockerize 80% of your enterprise IT in the next 24 months. Docker is somehow like the new Linux: Be ready to experience that cutting edge feeling we had with Linux 12 years ago J Kubernetes is (sometimes) the new PaaS. munz & more #40

39 #cloud Docker is used in production / many products offered as Docker images / cross cloud / Docker orchestration is needed / #swarm is the easier #k8s / OCE or OCCS & Wercker removes heavy lifting / Oracle caught the trend! / if Kubernetes then cloud service? / emerging CNCF: Jaeger, Graphana, Prometheus + also: Fn

40 munz & more #42

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42 500+ Technical Experts Helping Peers Globally 3 Membership Tiers Oracle ACE Director Oracle ACE Oracle ACE Associate bit.ly/oracleaceprogram Connect: oracle-ace_ww@oracle.com Nominate yourself or someone you know: acenomination.oracle.com

43 facebook.com/cloudcomputingbook facebook.com/weblogicbook Don t be shy frankmunz/ youtube.com/weblogicbook -> more than 50 web casts