What is Kubernetes Pod Security Context RunAsUser?

Question

Accepted Answer

**RunAsUser** — specify Linux user for container execution.

```yaml
apiVersion: v1
kind: Pod
metadata:
  name: runas-pod
spec:
  securityContext:
    runAsNonRoot: true
    runAsUser: 1000
    runAsGroup: 3000
  containers:
  - name: app
    image: nginx:latest
    securityContext:
      runAsUser: 1000
      runAsGroup: 3000
```

```bash
kubectl exec runas-pod -- id
kubectl exec runas-pod -- whoami
```

**Best Practice:** run as non-root, use specific UID.

DevOps: What is Kubernetes Pod Security Context RunAsUser?