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AWS EKS Workshop

tip

Going through 'EKS Workshop'

Networking​

Amazon VPC Container Network Interface (CNI)​

EKS has TWO VPCs

  1. (AWS) Managed Kubernetes Control Plane
  2. (Customer) Data Plane, Worker Nodes, Containers

Requirement:

  1. minimum 2 subnets
  2. at least 2 AZs

EKS (Control Plane) uses "EKS-managed" ENI to talk to the Data Plane.

LAB: Network Policies​

install eksctl:

# for ARM systems, set ARCH to: `arm64`, `armv6` or `armv7`
ARCH=amd64
PLATFORM=$(uname -s)_$ARCH

curl -sLO "https://github.com/eksctl-io/eksctl/releases/latest/download/eksctl_$PLATFORM.tar.gz"

# (Optional) Verify checksum
curl -sL "https://github.com/eksctl-io/eksctl/releases/latest/download/eksctl_checksums.txt" | grep $PLATFORM | sha256sum --check

tar -xzf eksctl_$PLATFORM.tar.gz -C /tmp && rm eksctl_$PLATFORM.tar.gz

sudo mv /tmp/eksctl /usr/local/bin

Cluster setup from labs:

export EKS_CLUSTER_NAME=eks-workshop
export AWS_REGION=ap-southeast-2
curl -fsSL https://raw.githubusercontent.com/aws-samples/eks-workshop-v2/stable/cluster/eksctl/cluster.yaml | \
envsubst | eksctl create cluster -f -
eksctl create cluster \
  --name eksworkshop-cluster \
  --version 1.30.1 \
  --region ap-southeast-2 \
  --nodegroup-name eksworkshop-nodes \
  --node-type t3.medium \
  --nodes 3 \
  --nodes-min 1 \
  --nodes-max 4 \
  --managed
kubeconfig

get ~/.kube/config file from EKS, run: aws eks update-kubeconfig --name eksworkshop-cluster