证响应总是相同的。</p><h2 id=failover-to-region1zone2>故障转移到 <code>region1.zone2</code></h2><p>接下来， 触发故障转移到 <code>region1.zone2</code>。为此，您在 <code>region1.zone1</code> 中 <code>HelloWorld</code>
<a href=https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/operations/draining#draining>逐出 Envoy Sidecar 代理</a>：</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ kubectl --context=&#34;${CTX_R1_Z1}&#34; exec \
  &#34