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<a href="https://github.com/kubernetes/ingress-nginx/edit/master/docs/examples/customization/external-auth-headers/README.md" title="Edit this page" class="md-icon md-content__icon"></a>
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<h1 id="external-authentication-authentication-service-response-headers-propagation">External authentication, authentication service response headers propagation<a class="headerlink" href="#external-authentication-authentication-service-response-headers-propagation" title="Permanent link">¶</a></h1>
|
|
<p>This example demonstrates propagation of selected authentication service response headers
|
|
to backend service.</p>
|
|
<p>Sample configuration includes:</p>
|
|
<ul>
|
|
<li>Sample authentication service producing several response headers</li>
|
|
<li>Authentication logic is based on HTTP header: requests with header <code class="codehilite">User</code> containing string <code class="codehilite">internal</code> are considered authenticated</li>
|
|
<li>After successful authentication service generates response headers <code class="codehilite">UserID</code> and <code class="codehilite">UserRole</code></li>
|
|
<li>Sample echo service displaying header information</li>
|
|
<li>Two ingress objects pointing to echo service</li>
|
|
<li>Public, which allows access from unauthenticated users</li>
|
|
<li>Private, which allows access from authenticated users only</li>
|
|
</ul>
|
|
<p>You can deploy the controller as
|
|
follows:</p>
|
|
<div class="codehilite"><pre><span></span><span class="gp">$</span> kubectl create -f deploy/
|
|
<span class="go">deployment "demo-auth-service" created</span>
|
|
<span class="go">service "demo-auth-service" created</span>
|
|
<span class="go">ingress "demo-auth-service" created</span>
|
|
<span class="go">deployment "demo-echo-service" created</span>
|
|
<span class="go">service "demo-echo-service" created</span>
|
|
<span class="go">ingress "public-demo-echo-service" created</span>
|
|
<span class="go">ingress "secure-demo-echo-service" created</span>
|
|
|
|
<span class="gp">$</span> kubectl get po
|
|
<span class="go">NAME READY STATUS RESTARTS AGE</span>
|
|
<span class="go">NAME READY STATUS RESTARTS AGE</span>
|
|
<span class="go">demo-auth-service-2769076528-7g9mh 1/1 Running 0 30s</span>
|
|
<span class="go">demo-echo-service-3636052215-3vw8c 1/1 Running 0 29s</span>
|
|
|
|
<span class="go">kubectl get ing</span>
|
|
<span class="go">NAME HOSTS ADDRESS PORTS AGE</span>
|
|
<span class="go">public-demo-echo-service public-demo-echo-service.kube.local 80 1m</span>
|
|
<span class="go">secure-demo-echo-service secure-demo-echo-service.kube.local 80 1m</span>
|
|
</pre></div>
|
|
|
|
|
|
<p>Test 1: public service with no auth header</p>
|
|
<div class="codehilite"><pre><span></span><span class="gp">$</span> curl -H <span class="s1">'Host: public-demo-echo-service.kube.local'</span> -v <span class="m">192</span>.168.99.100
|
|
<span class="go">* Rebuilt URL to: 192.168.99.100/</span>
|
|
<span class="go">* Trying 192.168.99.100...</span>
|
|
<span class="go">* Connected to 192.168.99.100 (192.168.99.100) port 80 (#0)</span>
|
|
<span class="gp">></span> GET / HTTP/1.1
|
|
<span class="gp">></span> Host: public-demo-echo-service.kube.local
|
|
<span class="gp">></span> User-Agent: curl/7.43.0
|
|
<span class="gp">></span> Accept: */*
|
|
<span class="gp">></span>
|
|
<span class="go">< HTTP/1.1 200 OK</span>
|
|
<span class="go">< Server: nginx/1.11.10</span>
|
|
<span class="go">< Date: Mon, 13 Mar 2017 20:19:21 GMT</span>
|
|
<span class="go">< Content-Type: text/plain; charset=utf-8</span>
|
|
<span class="go">< Content-Length: 20</span>
|
|
<span class="go">< Connection: keep-alive</span>
|
|
<span class="go"><</span>
|
|
<span class="go">* Connection #0 to host 192.168.99.100 left intact</span>
|
|
<span class="go">UserID: , UserRole:</span>
|
|
</pre></div>
|
|
|
|
|
|
<p>Test 2: secure service with no auth header</p>
|
|
<div class="codehilite"><pre><span></span><span class="gp">$</span> curl -H <span class="s1">'Host: secure-demo-echo-service.kube.local'</span> -v <span class="m">192</span>.168.99.100
|
|
<span class="go">* Rebuilt URL to: 192.168.99.100/</span>
|
|
<span class="go">* Trying 192.168.99.100...</span>
|
|
<span class="go">* Connected to 192.168.99.100 (192.168.99.100) port 80 (#0)</span>
|
|
<span class="gp">></span> GET / HTTP/1.1
|
|
<span class="gp">></span> Host: secure-demo-echo-service.kube.local
|
|
<span class="gp">></span> User-Agent: curl/7.43.0
|
|
<span class="gp">></span> Accept: */*
|
|
<span class="gp">></span>
|
|
<span class="go">< HTTP/1.1 403 Forbidden</span>
|
|
<span class="go">< Server: nginx/1.11.10</span>
|
|
<span class="go">< Date: Mon, 13 Mar 2017 20:18:48 GMT</span>
|
|
<span class="go">< Content-Type: text/html</span>
|
|
<span class="go">< Content-Length: 170</span>
|
|
<span class="go">< Connection: keep-alive</span>
|
|
<span class="go"><</span>
|
|
<span class="go"><html></span>
|
|
<span class="go"><head><title>403 Forbidden</title></head></span>
|
|
<span class="go"><body bgcolor="white"></span>
|
|
<span class="go"><center><h1>403 Forbidden</h1></center></span>
|
|
<span class="go"><hr><center>nginx/1.11.10</center></span>
|
|
<span class="go"></body></span>
|
|
<span class="go"></html></span>
|
|
<span class="go">* Connection #0 to host 192.168.99.100 left intact</span>
|
|
</pre></div>
|
|
|
|
|
|
<p>Test 3: public service with valid auth header</p>
|
|
<div class="codehilite"><pre><span></span><span class="gp">$</span> curl -H <span class="s1">'Host: public-demo-echo-service.kube.local'</span> -H <span class="s1">'User:internal'</span> -v <span class="m">192</span>.168.99.100
|
|
<span class="go">* Rebuilt URL to: 192.168.99.100/</span>
|
|
<span class="go">* Trying 192.168.99.100...</span>
|
|
<span class="go">* Connected to 192.168.99.100 (192.168.99.100) port 80 (#0)</span>
|
|
<span class="gp">></span> GET / HTTP/1.1
|
|
<span class="gp">></span> Host: public-demo-echo-service.kube.local
|
|
<span class="gp">></span> User-Agent: curl/7.43.0
|
|
<span class="gp">></span> Accept: */*
|
|
<span class="gp">></span> User:internal
|
|
<span class="gp">></span>
|
|
<span class="go">< HTTP/1.1 200 OK</span>
|
|
<span class="go">< Server: nginx/1.11.10</span>
|
|
<span class="go">< Date: Mon, 13 Mar 2017 20:19:59 GMT</span>
|
|
<span class="go">< Content-Type: text/plain; charset=utf-8</span>
|
|
<span class="go">< Content-Length: 44</span>
|
|
<span class="go">< Connection: keep-alive</span>
|
|
<span class="go"><</span>
|
|
<span class="go">* Connection #0 to host 192.168.99.100 left intact</span>
|
|
<span class="go">UserID: 1443635317331776148, UserRole: admin</span>
|
|
</pre></div>
|
|
|
|
|
|
<p>Test 4: public service with valid auth header</p>
|
|
<div class="codehilite"><pre><span></span><span class="gp">$</span> curl -H <span class="s1">'Host: secure-demo-echo-service.kube.local'</span> -H <span class="s1">'User:internal'</span> -v <span class="m">192</span>.168.99.100
|
|
<span class="go">* Rebuilt URL to: 192.168.99.100/</span>
|
|
<span class="go">* Trying 192.168.99.100...</span>
|
|
<span class="go">* Connected to 192.168.99.100 (192.168.99.100) port 80 (#0)</span>
|
|
<span class="gp">></span> GET / HTTP/1.1
|
|
<span class="gp">></span> Host: secure-demo-echo-service.kube.local
|
|
<span class="gp">></span> User-Agent: curl/7.43.0
|
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<span class="gp">></span> Accept: */*
|
|
<span class="gp">></span> User:internal
|
|
<span class="gp">></span>
|
|
<span class="go">< HTTP/1.1 200 OK</span>
|
|
<span class="go">< Server: nginx/1.11.10</span>
|
|
<span class="go">< Date: Mon, 13 Mar 2017 20:17:23 GMT</span>
|
|
<span class="go">< Content-Type: text/plain; charset=utf-8</span>
|
|
<span class="go">< Content-Length: 43</span>
|
|
<span class="go">< Connection: keep-alive</span>
|
|
<span class="go"><</span>
|
|
<span class="go">* Connection #0 to host 192.168.99.100 left intact</span>
|
|
<span class="go">UserID: 605394647632969758, UserRole: admin</span>
|
|
</pre></div>
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