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Travis Bot 2018-09-04 23:47:40 +00:00
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troubleshooting/index.html
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@ -356,6 +356,18 @@
<li class="md-nav__item">
<a href="../deploy/baremetal/" title="Bare-metal considerations" class="md-nav__link">
Bare-metal considerations
</a>
</li>
<li class="md-nav__item">
<a href="../deploy/rbac/" title="Role Based Access Control (RBAC)" class="md-nav__link">
Role Based Access Control (RBAC)
@ -1208,7 +1220,6 @@ methods to obtain more information.</p>
<span class="go"> Normal UPDATE 58s nginx-ingress-controller Ingress default/cafe-ingress</span>
</pre></div>
<p>Check the Ingress Controller Logs</p>
<div class="codehilite"><pre><span></span><span class="gp">$</span> kubectl get pods -n &lt;namespace-of-ingress-controller&gt;
<span class="go">NAME READY STATUS RESTARTS AGE</span>
@ -1224,7 +1235,6 @@ methods to obtain more information.</p>
<span class="go">....</span>
</pre></div>
<p>Check the Nginx Configuration</p>
<div class="codehilite"><pre><span></span><span class="gp">$</span> kubectl get pods -n &lt;namespace-of-ingress-controller&gt;
<span class="go">NAME READY STATUS RESTARTS AGE</span>
@ -1245,7 +1255,6 @@ methods to obtain more information.</p>
<span class="go">....</span>
</pre></div>
<p>Check if used Services Exist</p>
<div class="codehilite"><pre><span></span><span class="gp">$</span> kubectl get svc --all-namespaces
<span class="go">NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE</span>
@ -1257,7 +1266,6 @@ methods to obtain more information.</p>
<span class="go">kube-system kubernetes-dashboard NodePort 10.103.128.17 &lt;none&gt; 80:30000/TCP 30m</span>
</pre></div>
<h2 id="debug-logging">Debug Logging<a class="headerlink" href="#debug-logging" title="Permanent link">&para;</a></h2>
<p>Using the flag <code class="codehilite">--v=XX</code> it is possible to increase the level of logging. This is performed by editing
the deployment.</p>
@ -1270,7 +1278,6 @@ the deployment.</p>
<span class="gp">#</span> Add --v<span class="o">=</span>X to <span class="s2">&quot;- args&quot;</span>, where X is an integer
</pre></div>
<ul>
<li><code class="codehilite">--v=2</code> shows details using <code class="codehilite">diff</code> about the changes in the configuration in nginx</li>
<li><code class="codehilite">--v=3</code> shows details about the service, Ingress rule, endpoint changes and it dumps the nginx configuration in JSON format</li>
@ -1288,7 +1295,6 @@ with the kubeconfig file.</p>
+-------------+ +------------+
</pre></div>
<p><strong>Service authentication</strong></p>
<p>The Ingress controller needs information from apiserver. Therefore, authentication is required, which can be achieved in two different ways:</p>
<ol>
@ -1325,7 +1331,6 @@ on the lower left hand side.</p>
+---------------------------------------------------+ +------------------+
</pre></div>
<h3 id="service-account">Service Account<a class="headerlink" href="#service-account" title="Permanent link">&para;</a></h3>
<p>If using a service account to connect to the API server, Dashboard expects the file
<code class="codehilite">/var/run/secrets/kubernetes.io/serviceaccount/token</code> to be present. It provides a secret
@ -1396,7 +1401,6 @@ token that is required to authenticate with the API server.</p>
<span class="go">}</span>
</pre></div>
<p>If it is not working, there are two possible reasons:</p>
<ol>
<li>
@ -1432,7 +1436,6 @@ dump. This allows us to see which configuration is being used, as well as older
<div class="codehilite"><pre><span></span><span class="gp">$</span> ssh user@workerIP
</pre></div>
<ol>
<li>Obtain the Docker Container Running nginx</li>
</ol>
@ -1441,21 +1444,18 @@ dump. This allows us to see which configuration is being used, as well as older
<span class="go">d9e1d243156a quay.io/kubernetes-ingress-controller/nginx-ingress-controller &quot;/usr/bin/dumb-init …&quot; 19 minutes ago Up 19 minutes k8s_nginx-ingress-controller_nginx-ingress-controller-67956bf89d-mqxzt_kube-system_079f31ec-aa37-11e8-ad39-080027a227db_0</span>
</pre></div>
<ol>
<li>Exec into the container</li>
</ol>
<div class="codehilite"><pre><span></span><span class="gp">$</span> docker <span class="nb">exec</span> -it --user<span class="o">=</span><span class="m">0</span> --privileged d9e1d243156a bash
</pre></div>
<ol>
<li>Make sure nginx is running in <code class="codehilite">--with-debug</code></li>
</ol>
<div class="codehilite"><pre><span></span><span class="gp">$</span> nginx -V <span class="m">2</span>&gt;<span class="p">&amp;</span><span class="m">1</span> <span class="p">|</span> grep -- <span class="s1">&#39;--with-debug&#39;</span>
</pre></div>
<ol>
<li>Get list of processes running on container</li>
</ol>
@ -1469,7 +1469,6 @@ dump. This allows us to see which configuration is being used, as well as older
<span class="go">root 172 0 0 20:43 pts/0 00:00:00 bash</span>
</pre></div>
<ol>
<li>Attach gdb to the nginx master process</li>
</ol>
@ -1481,7 +1480,6 @@ dump. This allows us to see which configuration is being used, as well as older
<span class="go">(gdb)</span>
</pre></div>
<ol>
<li>Copy and paste the following:</li>
</ol>
@ -1496,7 +1494,6 @@ dump. This allows us to see which configuration is being used, as well as older
<span class="go">end</span>
</pre></div>
<ol>
<li>
<p>Quit GDB by pressing CTRL+D</p>