Docker Meetup 22/11 - Keynote / Theseus

Meetup de Docker en Mendoza, hablo del estado de Docker/Kubernetes en la actualidad y presento Theseus, nuestro actualizador de nodos de Kubernetes

Transcript

1. Pablo Fredrikson
   @pablokbs
   Meetup 22/11
   

   View Slide

2. Pablo Fredrikson
   @pablokbs
   ● Nerd
   ● Lead SRE @ Invision
   ● 12 años con Linux / Software Libre
   ● 4+ años con Docker
   ● 2 años con Docker en producción
   

   View Slide

3. View Slide

4. Buenos tiempos
   

   View Slide

5. View Slide

6. View Slide

7. View Slide

8. Buenos tiempos
   

   View Slide

9. View Slide

10. View Slide

11. View Slide

12. View Slide

13. View Slide

14. View Slide

15. LA NUBE
    (o la computadora de otro)
    

    View Slide

16. Auto Scaling Groups
    (o ASGs)
    

    View Slide

17. Auto Scaling Groups
    (o ASGs)
    ● Deseado/Max/Min
    ● Reglas Auto Escalamiento
    ● Launch configuration (script inicio)
    ● Tags
    

    View Slide

18. Buenos tiempos
    

    View Slide

19. View Slide

20. data "aws_ami" "coreos" {
    filter {
    name = "coreos"
    values = ["coreos/images/hvm-ssd/coreos-${version}*"]
    }
    }
    resource "aws_launch_configuration" "workers" {
    name = "cluster1-workers"
    image_id = "{data.aws_ami.coreos.id}"
    instance_type = "m3.large"
    user_data = "${my_install_script}"
    }
    

    View Slide

21. #!/bin/bash
    ./install-kubernetes-worker.sh ${kubernetes_version}
    

    View Slide

22. resource "aws_autoscaling_group" "workers" {
    name = "cluster1-workers"
    max_size = 5
    min_size = 2
    desired_capacity = 4
    health_check_type = "ELB"
    launch_configuration = "${aws_launch_configuration.workers.name}"
    tag {
    key = "KubernetesVersion"
    value = "${kubernetes_version}"
    propagate_at_launch = true
    }
    }
    

    View Slide

23. resource "aws_autoscaling_group" "workers" {
    name = "cluster1-workers"
    max_size = 5
    min_size = 2
    desired_capacity = 4
    health_check_type = "ELB"
    launch_configuration = "${aws_launch_configuration.workers.name}"
    tag {
    key = "AmiVERSION"
    value = "${ami_version}"
    propagate_at_launch = true
    }
    }
    

    View Slide

24. Paradoja de Teseo
    

    View Slide

25. ${kubernetes_version}
    = 1.8
    kubernetesVersion = 1.8
    ${kubernetes_version}
    = ?
    

    View Slide

26. ${kubernetes_version}
    = 1.9
    kubernetesVersion = 1.8
    ${kubernetes_version}
    = ?
    x
    

    View Slide

27. ${kubernetes_version}
    = 1.9
    kubernetesVersion = 1.9
    ${kubernetes_version}
    = ?
    x
    

    View Slide

28. ${ami_version}
    = coreos-1668
    amiVersion = coreos-1668
    ${ami_version}
    = ?
    

    View Slide

29. Theseus
    ● Drena nodos antes de matarlos
    ● Ventana de mantenimiento
    ● Concurrencia
    ● Maneja versiones de kubernetes, versiones de AMI, versiones de scripts
    ● Automático
    

    View Slide

30. Es open source?
    

    View Slide

31. No.
    

    View Slide

32. View Slide

33. Buenos tiempos
    @pablokbs
    

    View Slide

34. ¿Preguntas?
    @pablokbs
    @InvisionApp
    

    View Slide