2015 OSCON - Java-based microservices, containers, Kubernetes - How To

2015 OSCON - Java-based microservices, containers, Kubernetes - How To

5e0c801ac1a5d0512bb9774ab158d06d?s=128

Ray Tsang

July 27, 2015
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  1. 7.

    @saturnism @kubernetesio #oscon Guestbook UI Hello World Service Redis session

    replication greeting MySQL Guestbook Service CRUD
  2. 8.

    @saturnism @kubernetesio #oscon Package & Deployment application.ear app.war helloworld-service.jar guestbook-service.jar

    apache-xyz.jar application.war /... helloworld-service.jar guestbook-service.jar apache-xyz.jar
  3. 15.

    @saturnism @kubernetesio #oscon Local Docker Repository Container Image Repository myservice:1.0

    1. Build an image myservice:1.0 2. Push image to repository Cluster Node 1..n 3. Deploy the service myservice:1.0 5. Pull image from repository Container Orchestrator 4. Which Node? 6. Run!
  4. 20.

    @saturnism @kubernetesio #oscon MySQL docker run -d --name mysql -p

    3306:3306 -e MYSQL_ROOT_PASSWORD=yourpassword -e MYSQL_DATABASE=app mysql
  5. 23.

    @saturnism @kubernetesio #oscon Hello World Service docker run -ti --name

    helloworldservice \ saturnism/spring-boot-helloworld-service:1.0
  6. 24.

    @saturnism @kubernetesio #oscon Guestbook UI docker run -ti --rm --link

    redis:redis \ --link helloworldservice:helloworldservice \ --link guestbookservice:guestbookservice \ -p 8080:8080 saturnism/spring-boot-helloworld-ui
  7. 28.

    @saturnism @kubernetesio #oscon Enter Kubernetes Greek for “Helmsman”; also the

    root of the word “Governor” • Container orchestrator • Runs containers • Supports multiple cloud and bare- metal environments • Inspired and informed by Google’s experiences and internal systems • Open source, written in Go Manage applications, not machines
  8. 30.

    @saturnism @kubernetesio #oscon libs app kernel libs app libs app

    libs app Kubernetes Cluster libs app kernel libs app libs app libs app libs app kernel libs app libs app libs app Kubernetes Master
  9. 32.

    @saturnism @kubernetesio #oscon Version 1.0 Hosted on GitHub 410+ contributors

    14,800+ commits 9,200+ GitHub stars CoreOS HP IBM Mesosphere Microsoft Project Partners Open Source Community Pivotal Red Hat SaltStack VMWare
  10. 33.

    @saturnism @kubernetesio #oscon Group of containers Live and die together

    Shared network interface Shared volumes Unique Routable IP Pod App Log Collector Pods ...
  11. 34.

    @saturnism @kubernetesio #oscon Label anything Name-value pair Make your own

    Pod App Log Collector Labels ... type = Frontend version = 1.0
  12. 35.

    @saturnism @kubernetesio #oscon Replication Controller Replicas → 2 Pod frontend

    Pod App Log Collector ... type = Frontend version = 1.0 Pod App Log Collector ... type = Frontend version = 1.0 Replication Controllers
  13. 36.

    @saturnism @kubernetesio #oscon Replication Controller Replicas → 1 Pod App

    Log Collector ... type = Frontend version = 1.0 Replication Controllers
  14. 37.

    @saturnism @kubernetesio #oscon Replication Controllers node 1 f0118 node 3

    node 4 node 2 d9376 b0111 a1209 Replication Controller - Desired = 4 - Current = 4
  15. 38.

    @saturnism @kubernetesio #oscon Replication Controllers node 1 f0118 node 3

    node 4 node 2 Replication Controller - Desired = 4 - Current = 4 d9376 b0111 a1209
  16. 39.

    @saturnism @kubernetesio #oscon Replication Controllers node 1 f0118 node 3

    node 4 Replication Controller - Desired = 4 - Current = 3 b0111 a1209
  17. 40.

    @saturnism @kubernetesio #oscon Replication Controllers node 1 f0118 node 3

    node 4 Replication Controller - Desired = 4 - Current = 4 b0111 a1209 c9bad
  18. 41.

    @saturnism @kubernetesio #oscon Replication Controller Replicas → 2 Pod frontend

    Pod type = Frontend version = 1.0 Pod type = Frontend version = 1.0 Services Service Label selectors: version = 1.0 type = Frontend
  19. 42.

    @saturnism @kubernetesio #oscon Pod frontend Pod type = Frontend version

    = 1.0 Pod type = Frontend version = 1.0 Services Service Label selectors: type = Frontend Pod type = Frontend version = 2.0
  20. 46.

    @saturnism @kubernetesio #oscon Local Docker Repository Container Image Repository myservice:1.0

    1. docker build myservice:1.0 2. docker push Cluster Node 1..n 3. kubectl create myservice:1.0 5. docker push Container Orchestrator 4. Which Node? 6. docker run
  21. 59.

    @saturnism @kubernetesio #oscon Vagrant export KUBERNETES_PROVIDER=vagrant curl -sS https://get.k8s.io |

    bash Google Container Engine - Beta http://cloud.google.com/container-engine http://kubernetes.io/gettingstarted/
  22. 63.
  23. 64.

    @saturnism @kubernetesio #oscon Don’t Log to Container Filesystem! Log to

    a volume… docker -v /tmp/log:/log Or Send it elsewhere!
  24. 65.

    @saturnism @kubernetesio #oscon Clean up disk spaces Every image, layer,

    and, even containers litters docker rm $(docker ps -a -q) docker rmi $(docker images -q --filter dangling=true)
  25. 66.
  26. 68.

    @saturnism @kubernetesio #oscon Use Spring Profile One container - run

    on Docker Machine, Kubernetes, and App Engine!