Kubernetes

Testing Kubernetes resources through setting up clusters on AWS and running quick demos.

Tools

1. kubectl command line tool lets you interact with and control Kubernetes clusters; it looks for a file named config (usually located under the $HOME/.kube directory). Cheatsheet for reference.

kubeconfig clean-up in 3 steps

• kubectl config unset users.<mycluster_name>
• kubectl config unset contexts.<mycluster_name>
• kubectl config unset clusters.<mycluster_name>

2. kops provides a way to create kubernetes clusters through the terminal.

AWS

• export KOPS_STATE_STORE=s3://<aws_bucket_name>
• export AWS_ACCESS_KEY_ID=$(aws configure get aws_access_key_id)
• export AWS_SECRET_ACCESS_KEY=$(aws configure get aws_secret_access_key)

Example: kops create cluster --node-count 2 --node-size t3a.medium --master-size t3a.medium --zones us-east-1b,us-east-1c --networking cilium --cloud-labels "Team=myTeam,Owner=myName,env=T3sTing" er1ck.k8s.local

3. helm, sometimes known as the package manager for kubernetes. Search for software packages on https://artifacthub.io/