Pablo Chico de Guzman | Introducción a Docker y Kubernetes | Codemo...

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Introducción a Docker y Kubernetes
Pablo Chico de Guzman
Madrid | November 30 - December 1, 2018

ABOUT ME
Pablo Chico De Guzman
• Focused on container industry.
• Docker Madrid Meetup - 3.500 members.
• 4 years working ...

What Is a Container?

DOCKER
What Is A Container?
• Simplicity for LXC containers (developers are lazy).
• Portable process.
• Dependency manage...

DOCKER
What Is A Container?
SERVER
HOST OS
HYPERVISOR
GUEST
OS
GUEST
OS
Libs1 Libs2
App1 App2
SERVER
HOST OS
DOCKER
Libs1 ...

Why Are Containers
Successful?

DOCKER
Why Are Containers Successful?
MySQL
Nginx
MyApp
DOCKER
REGISTRY

How to Deploy
Containers?

ORCHESTRATORS
Some Examples
• Scripting, Ansible, Terraform…
• Docker Swarm.
• Mesosphere.
• ECS / AWS Fargate.
• Kubernet...

ORCHESTRATORS
Kubernetes
• Borg, Google.
• Declarative.
• Fault tolerance.
• Service Discovery.
• Networking.
• Scales to ...

ORCHESTRATORS
Kubernetes

ORCHESTRATORS
How To Run Kubernetes
• Docker for Mac, Minikube, microk8s.
• Kops / Rancher.
• AKS, EKS, GKE, Digital Ocean...

Working With
Kubernetes

KUBERNETES
Pods
• Containers delayed as a unit.
• Localhost.
• Shared volumes.
• Sidecars.

KUBERNETES
Pod Lifecycle

KUBERNETES
Replica Sets
• Stateless.
• Scale pods.
• Fault tolerance.

KUBERNETES
Deployments
• Pods + Replica sets.
• Upgrades.
• Rollbacks / History.

KUBERNETES
Services
• Pods IPs are not reliable.
• Static endpoint.
• Load balancer.

KUBERNETES
Namespaces
• Virtual clusters
• Unique names per namespace.
• Useful for Teams.
• Same networking.
• Quotas.

KUBERNETES
Other Resources
• Ingress Controllers.
• Volumes.
• Jobs.
• DaemonSets.
• StatefulSets.
• Secrets.
• Labels.
• ...

KUBERNETES
Ecosystem
• Helm.
• Istio.
• Spinnaker.
• Open FaaS.
• Prometheus.

Docker and Kubernetes
Come With Their Own
Set of Problems

DEVELOPMENT
Local Development Cycle
Code
BuildTest

DEVELOPMENT
Develop Locally Without Kubernetes
• Fast.
• Programming language cache.
• Hot reloads.
• Integration is broke...

DEVELOPMENT
Develop Locally Without Kubernetes

DEVELOPMENT
Kubernetes Development Cycle
Code Sync
Build
container
Pull
image
Tag image
Push
image
Deploy
Test

DEVELOPMENT
Skaffold / Draft
• https://github.com/GoogleContainerTools/skaffold
• https://github.com/Azure/draft
• Automat...

DEVELOPMENT
Cloud Native Development
• Move your dev environment entirely to the cluster.
• No need for build/push/pull cy...

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