Kubernetes 1.16 Ephemeral Containers (alpha) - Kubernetes Meetup Tokyo #24 (2019/10/24)

debugtest.yaml

apiVersion: v1
kind: Pod
metadata:
  name: debugtest
spec:
  shareProcessNamespace: true
  containers:
  - name: myapp
    image: docker.io/superbrothers/distroless-examples-nodejs-hello-http
---
apiVersion: v1
kind: Service
metadata:
  name: debugtest
spec:
  selector:
    app: debugtest
  ports:
  - port: 80
    targetPort: 8000

demo.txt

# Install kubectl-debug kubectl plugin
curl -s -L -o- "https://github.com/verb/kubectl-debug/releases/download/v0.1.2/kubectl-debug_$(uname | tr '[:upper:]' '[:lower:]')_amd64.tar.gz" | tar xzf - kubectl-debug
mkdir -p ~/bin
mv kubectl-debug ~/bin
export PATH="$HOME/bin:$PATH"
kubectl debug -h

---

minikube version
minikube start --kubernetes-version=v1.16.2 --feature-gates=EphemeralContainers=true
kubectl version
kubectl get po -n kube-system kube-apiserver-minikube -o yaml | grep feature-gates
cat debugtest.yaml
kubectl apply -f debugtest.yaml
kubectl exec -it debugtest /bin/sh
kubectl debug debugtest --attach
kubectl debug debugtest --attach -c debugger2 --image chriswayg/toolbox
# tcpdump -A dst port 8000
# strace -p 6

---

kubectl run busybox --image=busybox --restart=Never --rm -it
# wget -q -O- debugtest