Kontainer
Keamanan Kubernetes

1# Dockerfile Aman
2FROM ubuntu:22.04  # ✅ Gambar dasar didukung
3RUN apt-get update && apt-get install -y --no-install-recommends \
4    package1=1.2.3 package2=4.5.6 && \\  # ✅ Penguncian paket
5    rm -rf /var/lib/apt/lists/*  # ✅ Mengurangi ukuran gambar
6COPY --chown=app:app . /app/  # ✅ Izin yang tepat
7RUN useradd -r app
8USER app  # ✅ Pengguna non-root
9EXPOSE 8080  # ✅ Port non-privileged
10# ✅ Rahasia dikelola melalui lingkungan
11COPY . /app/
12CMD [python, app.py]
13 

1# Dockerfile Rentan
2FROM ubuntu:18.04  # ❌ Gambar dasar EOL (367 CVEs)
3RUN apt-get update  # ❌ Tidak ada penguncian paket
4COPY secrets.json /app/  # ❌ Rahasia dalam gambar
5RUN useradd app
6USER root  # ❌ Berjalan sebagai root
7EXPOSE 22  # ❌ SSH terbuka
8ENV API_KEY=sk-1234567890  # ❌ Rahasia dalam variabel lingkungan
9COPY . /app/
10CMD [python, app.py]
11 

1apiVersion: v1
2kind: Pod
3metadata:
4  name: secure-app
5spec:
6  containers:
7  - name: app
8    image: nginx:1.21  # ✅ Versi aman yang diperbarui
9    securityContext:
10      allowPrivilegeEscalation: false  # ✅ Tidak ada eskalasi hak istimewa
11      runAsNonRoot: true              # ✅ Pengguna non-root
12      runAsUser: 1000                 # ✅ UID spesifik
13      readOnlyRootFilesystem:
14 true    # ✅ Sistem file hanya-baca
15      capabilities:
16        drop: [ALL]
17                 # ✅ Hapus semua kemampuan
18        add: [NET_BIND_SERVICE]
19     # ✅ Hanya kemampuan yang diperlukan
20    resources:
21      limits:
22        memory:
23 256Mi               # ✅ Batas sumber daya
24        cpu: 200m
25        ephemeral-storage:
26 1Gi
27      requests:
28        memory: 128Mi
29        cpu: 100m
30    livenessProbe:
31                    # ✅ Pemeriksaan kesehatan
32      httpGet:
33        path: /health
34        port: 8080
35    readinessProbe:
36      httpGet:
37        path: /ready
38        port: 8080
39 

1apiVersion: v1
2kind: Pod
3metadata:
4  name: vulnerable-app
5spec:
6  containers:
7  - name: app
8    image: nginx:1.14  # ❌ Versi rentan
9    securityContext:
10      privileged: true  # ❌ Akses penuh ke host
11      runAsUser: 0     # ❌ Pengguna root
12    volumeMounts:
13    - name: host-root
14      mountPath: /host  # ❌ Akses sistem file host
15  volumes:
16  - name: host-root
17    hostPath:
18      path: /          # ❌ Mount root host
19  hostNetwork: true    # ❌ Akses jaringan host
20  hostPID: true        # ❌ Namespace PID host
21