chadmcrowell

apiVersion: v1
kind: Pod
meta
  name: data-processor
  namespace: production
spec:
  containers:
  - name: data-processor
    image: nginx:1.25
    resources:

chadmcrowell

# metrics server install
kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.8.0/components.yaml

# patch it to allow insecure connections (required for kind)
kubectl patch -n kube-system deployment metrics-server --type=json \
  -p '[{"op":"add","path":"/spec/template/spec/containers/0/args/-","value":"--kubelet-insecure-tls"}]'

# verify it's running
kubectl top pod

chadmcrowell

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: demo-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  ingressClassName: nginx
  rules:
  - http:

chadmcrowell

apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: node-logger
spec:
  selector:
    matchLabels:
      app: node-logger
  template:
    metadata:

chadmcrowell

apiVersion: gateway.networking.k8s.io/v1
kind: HTTPRoute
metadata:
  name: web-route
  namespace: default
spec:
  parentRefs:
  - name: prod-gateway
    namespace: infra
  hostnames:

chadmcrowell

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: web-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  ingressClassName: nginx
  rules:
  - host: myapp.example.com

chadmcrowell

sudo kubeadm init \
  --pod-network-cidr=192.168.0.0/16 \
  --kubernetes-version=stable


kubectl apply -f https://raw.githubusercontent.com/projectcalico/calico/v3.28.0/manifests/calico.yaml

apt update && apt install -y bash-completion
echo 'source <(kubectl completion bash)' >> ~/.bashrc
echo 'source /usr/share/bash-completion/bash_completion' >> ~/.bashrc

chadmcrowell

apiVersion: v1
kind: Pod
metadata:
  name: my-pod
  namespace: default
spec:
  tolerations:
  - key: "node-role.kubernetes.io/control-plane"
    operator: "Exists"
    effect: "NoSchedule"

chadmcrowell

apiVersion: v1
kind: Pod
metadata:
  name: memory-hog
spec:
  containers:
  - name: stress
    image: alexeiled/stress-ng
    args:
    - --vm

chadmcrowell

apiVersion: v1
kind: Service
metadata:
  labels:
    k8s-app: kube-dns
    kubernetes.io/cluster-service: "true"
    kubernetes.io/name: CoreDNS
  name: kube-dns
  namespace: kube-system
spec: