Docker + HELM + Kubernetes

intro

Docker all about a speed

Build faster

Deploy faster

Rollback faster

Scale in/out faster

Recover faster

Test faster

Why to use Kubernetes orchestration system ?

Docker vs container

Image - is a file, comprised of multiple layers, that is used to execute code in a Docker container. "snapshot" in other virtual machine environments

Container - A container is a runnable instance of an image. You can create, start, stop, move, or delete a container using the Docker API or CLI. You can connect a container to one or more networks, attach storage to it, or even create a new image based on its current state.

Docker Engine - The software that executes commands for containers. Networking and volumes are part of Engine. Can be clustered together.

Registry - Stores, distributes and manages Docker images

Control Plane - Management plane for container and cluster orchestration

Docker Basics

Title Text

Bullet One
Bullet Two
Bullet Three

Docker Architecture

Cloud landscape on one page

landscape.cncf.io

What is HELM

Package manager

Like yum but for Kubernetes
Deployment lifecycle management
- Create
- Install
- Upgrade/Rollback
- Delete
- Status
- Versioning

Advantages

Manage complexity
Code reuse
Standard of deployment formula

HELM charts: files

deployment.yaml: deployment logic

.helmignore: files to ignore

config/tenant_{tenant_id}.yaml: actual values, usually per tenant/region

Chart.yaml: deployment metadata

configmap.yaml: map of all values to macros

_config-env.yaml: templating, for example map of environment variables