tcpdump kubernetes

deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: hasura
    hasuraService: custom
  name: hasura
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      app: hasura
  template:
    metadata:
      labels:
        app: hasura
    spec:
      containers:
      - image: hasura/graphql-engine:v1.3.2
        name: hasura
        env:
        - name: HASURA_GRAPHQL_DATABASE_URL
          value: postgres://postgres:password@0.tcp.ngrok.io:5432/postgres
        ports:
        - containerPort: 8080
          protocol: TCP
      - image: corfr/tcpdump
        name: tcpdump
        command: ["/bin/sleep", "infinity"]

Commands:

1. Ssh into the container: kubectl exec --stdin --tty hasura-574895c6bf-cdzdp --container tcpdump -- sh
2. Run tcpdump in container: tcpdump -s 0 -w dump.pcap . After capturing, quit the process and exit the container.
3. Copy capture file: kubectl cp hasura-574895c6bf-cdzdp:/dump.pcap -c tcpdump dump.pcap