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Abstract
ding the request.</li><li><b>nginx.ingress.kubernetes.io/ssl-redirect</b>: Automatically redirect HTTP traffic to HTTPS.</li><li><b>nginx.ingress.kubernetes.io/limit-connections</b>: Limit the number of simultaneous connections to a service.</li><li><b>nginx.ingress.kubernetes.io/proxy-body-size</b>: Set the maximum body size for client requests.</li></ul><h1 id="42c1">TLS Termination</h1><p id="9937">TLS termination at the Ingress Controller level can be configured to offload SSL/TLS decryption from backend services. This involves creating TLS certificates using Kubernetes secrets and referencing them in Ingress resources.</p><p id="40af"><b>Example TLS Termination Configuration:</b></p><div id="8001"><pre><span class="hljs-attr">apiVersion:</span> <span class="hljs-string">networking.k8s.io/v1</span>
<span class="hljs-attr">kind:</span> <span class="hljs-string">Ingress</span>
<span class="hljs-attr">metadata:</span>
<span class="hljs-attr">name:</span> <span class="hljs-string">example-ingress</span>
<span class="hljs-attr">spec:</span>
<span class="hljs-attr">tls:</span>
<span class="hljs-bullet">-</span> <span class="hljs-attr">hosts:</span>
<span class="hljs-bullet">-</span> <span class="hljs-string">example.com</span>
<span class="hljs-attr">secretName:</span> <span class="hljs-string">example-tls-secret</span>
<span class="hljs-attr">rules:</span>
<span class="hljs-bullet">-</span> <span class="hljs-attr">host:</span> <span class="hljs-string">example.com</span>
<span class="hljs-attr">http:</span>
<span class="hljs-attr">paths:</span>
<span class="hljs-bullet">-</span> <span class="hljs-attr">path:</span> <span class="hljs-string">/</span>
<span class="hljs-attr">pathType:</span> <span class="hljs-string">Prefix</span>
<span class="hljs-attr">backend:</span>
<span class="hljs-attr">service:</span>
<span class="hljs-attr">name:</span> <span class="hljs-string">example-service</span>
<span class="hljs-attr">port:</span>
<span class="hljs-attr">number:</span> <span class="hljs-number">80</span></pre></div><h1 id="dade">Usage</h1><h2 id="06f9">Creating Ingress Resources</h2><p id="8dbb">Ingress resources define how incoming traffic should be routed to services within the Kubernetes cluster. They specify rules based on hostnames and paths.</p><p id="0d6b"><b>Example Ingress Resource:</b></p><div id="7eab"><pre><span class="hljs-attr">apiVersion:</span> <span class="hljs-string">networking.k8s.io/v1</span>
<span class="hljs
Options
-attr">kind:</span> <span class="hljs-string">Ingress</span>
<span class="hljs-attr">metadata:</span>
<span class="hljs-attr">name:</span> <span class="hljs-string">example-ingress</span>
<span class="hljs-attr">spec:</span>
<span class="hljs-attr">rules:</span>
<span class="hljs-bullet">-</span> <span class="hljs-attr">host:</span> <span class="hljs-string">example.com</span>
<span class="hljs-attr">http:</span>
<span class="hljs-attr">paths:</span>
<span class="hljs-bullet">-</span> <span class="hljs-attr">path:</span> <span class="hljs-string">/app</span>
<span class="hljs-attr">pathType:</span> <span class="hljs-string">Prefix</span>
<span class="hljs-attr">backend:</span>
<span class="hljs-attr">service:</span>
<span class="hljs-attr">name:</span> <span class="hljs-string">app-service</span>
<span class="hljs-attr">port:</span>
<span class="hljs-attr">number:</span> <span class="hljs-number">80</span>
<span class="hljs-bullet">-</span> <span class="hljs-attr">path:</span> <span class="hljs-string">/api</span>
<span class="hljs-attr">pathType:</span> <span class="hljs-string">Prefix</span>
<span class="hljs-attr">backend:</span>
<span class="hljs-attr">service:</span>
<span class="hljs-attr">name:</span> <span class="hljs-string">api-service</span>
<span class="hljs-attr">port:</span>
<span class="hljs-attr">number:</span> <span class="hljs-number">80</span></pre></div><h1 id="7135">Testing</h1><p id="40ff">Once the Ingress resources are created, you can verify the routing by accessing your services using the specified paths and hostnames.</p><div id="78c0"><pre><span class="hljs-variable"> </span>curl <span class="hljs-symbol">http:</span>/<span class="hljs-regexp">/example.com/app</span></pre></div><div id="466d"><pre><span class="hljs-variable"> </span>curl <span class="hljs-symbol">http:</span>/<span class="hljs-regexp">/example.com/api</span></pre></div><h1 id="b3cd">Conclusion</h1><p id="17b6">Nginx Ingress Controller is a powerful tool for managing inbound traffic to your Kubernetes cluster. By following this guide and experimenting with different configurations, you can effectively route traffic to your services, enforce security policies, and optimize the performance of your applications. Be sure to explore additional features and advanced configurations available in the official documentation to further enhance your networking setup.</p></article></body>