What is Kubernetes ProxyTerminationGracePeriod?

Question

Accepted Answer

**Termination Grace Period** — time allowed for Pod to shut down gracefully.

```yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp
spec:
  replicas: 3
  template:
    metadata:
      labels:
        app: myapp
    spec:
      terminationGracePeriodSeconds: 60
      containers:
      - name: app
        image: myapp:latest
        lifecycle:
          preStop:
            exec:
              command: ["sh", "-c", "sleep 15"]
---
# Pod-level override
apiVersion: v1
kind: Pod
metadata:
  name: critical-pod
spec:
  terminationGracePeriodSeconds: 120
  containers:
  - name: app
    image: myapp:latest
    lifecycle:
      preStop:
        httpGet:
          path: /shutdown
          port: 8080
```

```bash
# Check current grace period
kubectl get pod my-pod -o jsonpath='{.spec.terminationGracePeriodSeconds}'

# Force delete (bypass grace period)
kubectl delete pod my-pod --grace-period=0 --force

# Check events during shutdown
kubectl get events --field-selector reason=Killing
```

**Shutdown Flow:**
1. Pod marked for deletion.
2. preStop hook executes.
3. SIGTERM sent to containers.
4. Endpoint removed from Service.
5. Grace period countdown.
6. SIGKILL if still running.

**Best Practices:**
- Match preStop sleep to endpoint removal time.
- Handle SIGTERM in application.
- Drain connections before shutdown.

DevOps: What is Kubernetes ProxyTerminationGracePeriod?