icy&#34;
metadata:
  name: &#34;ratings-viewer&#34;
  namespace: default
spec:
  selector:
    matchLabels:
      app: ratings
  rules:
  - from:
    - source:
        principals: [&#34;cluster.local/ns/default/sa/bookinfo-reviews&#34;]
    to:
    - operation:
        methods: [&#34;GET&#34;]
EOF
</code></pre><p>在浏览器访问 Bookinfo <code>productpage</code> (<code>http://$GATEWAY_URL/productpage</code>)。你会在 “Book Reviews” 部分看到“黑色”和“红色”评分。</p><p><strong>恭