AWS EKS

• Now AWS Access Management is handled via EKS access entries over aws-auth-config

Creating a PVC

• Storage with eks
• Refer Here for EBS CSI Driver steps

AWS EKS Auto Mode

• In this mode Nodes will be auto provisioned

Scheduling Pods to Nodes in k8s

• Assigning Pods to Nodes has 4 options
  • node selector
  • Affinity and Anti Affinity
  • node Name
  • Taints and Tolerations
• For examples watch classroom recording

Affinity and Anti Affinity

• official docs
• Pod Affinity and Antiaffinity

---
apiVersion: v1
kind: Pod
metadata:
  name: abc
  labels:
    name: abc
spec:
  nodeSelector:
    myenv: staging
  containers:
  - name: abc
    image: nginx
    resources:
      limits:
        memory: "128Mi"
        cpu: "500m"
    ports:
      - containerPort: 80
---
apiVersion: v1
kind: Pod
metadata:
  name: abc-friend
  labels:
    name: abc-friend
spec:
  affinity:
    podAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
      - labelSelector:
          matchLabels:
            name: abc
        topologyKey: myenv
  containers:
  - name: abc
    image: nginx
    resources:
      limits:
        memory: "128Mi"
        cpu: "500m"
    ports:
      - containerPort: 80
---
apiVersion: v1
kind: Pod
metadata:
  name: abc-enemy
  labels:
    name: abc-enemy
spec:
  affinity:
    podAntiAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
      - labelSelector:
          matchLabels:
            name: abc
        topologyKey: myenv
  containers:
  - name: abc
    image: nginx
    resources:
      limits:
        memory: "128Mi"
        cpu: "500m"
    ports:
      - containerPort: 80

Taints and Tolerations

• Watch classroom video

What do Helm and Kustomize Solve

• Both this tools offer making kubernetes yamls dynamic in their own ways
• Helm represents itself as a package manager for kubernetes

Helm (Package manager for kubernetes)

• Installation

Terminology

• Repository: A repository consists of multiple charts with versions
• Chart: This represents an application/utility that can be installed in kubernetes (This chart somehow generates a dynamic yaml when executed)

How to create a chart

• TO create chart use helm create <chart-name>