What is Kubernetes Pod Init Container Wait Pattern?

Question

Accepted Answer

**Wait Pattern** — init containers waiting for dependencies.

```yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp
spec:
  template:
    spec:
      initContainers:
      - name: wait-for-db
        image: busybox:1.36
        command: ["sh", "-c", "until nc -z postgres-service 5432; do sleep 2; done"]
      - name: wait-for-redis
        image: busybox:1.36
        command: ["sh", "-c", "until nc -z redis-service 6379; do sleep 2; done"]
      containers:
      - name: app
        image: myapp:latest
```

```bash
kubectl get pod my-pod -o jsonpath='{.status.initContainerStatuses}' | jq
```

**Use cases:** DB readiness, config loading, service discovery.

DevOps: What is Kubernetes Pod Init Container Wait Pattern?