Kubernetes

What is kubernetes ?

• Pokemon

• Tesla car model

• Conainter management platform

• City in Lithuania

Main utility to manage kubernetes ?

• kubecat

• kubectl

• kubeping

• kubecuttle

Smallest deployment unit in kubernetes is ?

• Container

• Replica Set

• POD

• Deployment

Replica Set is managing:

• PODs

• Deployments

• Services

• Ingress

What is sidecar?

• POD running near main POD

• POD running in container

• Docker service

• Container running in POD

When init container is terminated?

• Together with POD

• During Deployment deletion

• Before main app container start

• During Replica Set deletion

Via Config Maps you manage:

• Environment variables

• PODs

• Files

• Secrets

With network policy you can:

• Block\allow traffic to namespace

• Block\allow traffic to virtual machine

• Inspect and analyze packets

• Manage firewalls

Readiness probe is used to:

• Start POD

• Start deployment

• Add POD to service

• Provide metrics

Deployment upgrade strategies:

• RollingUpdate

• RollOut

• Replace

• Recreate