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Travis Bot 2019-12-02 00:49:40 +00:00
parent 85b4d1b2ec
commit 058de1572d
8 changed files with 99 additions and 58 deletions
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11
examples/customization/sysctl/index.html
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@ -1151,10 +1151,15 @@
<h1 id="sysctl-tuning">Sysctl tuning<a class="headerlink" href="#sysctl-tuning" title="Permanent link"></a></h1>
<p>This example aims to demonstrate the use of an Init Container to adjust sysctl default values
using <code class="codehilite">kubectl patch</code></p>
<div class="codehilite"><pre><span></span><span class="go">kubectl patch deployment -n ingress-nginx nginx-ingress-controller --patch=&quot;$(cat patch.json)&quot;</span>
<p>This example aims to demonstrate the use of an Init Container to adjust sysctl default values using <code class="codehilite">kubectl patch</code></p>
<div class="codehilite"><pre><span></span><span class="go">kubectl patch deployment -n ingress-nginx nginx-ingress-controller \</span>
<span class="go"> --patch=&quot;$(curl https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/docs/examples/customization/sysctl/patch.json)&quot;</span>
</pre></div>
<p><strong>Changes:</strong>
- Backlog Queue setting <code class="codehilite">net.core.somaxconn</code> from <code class="codehilite">128</code> to <code class="codehilite">32768</code>
- Ephemeral Ports setting <code class="codehilite">net.ipv4.ip_local_port_range</code> from <code class="codehilite">32768 60999</code> to <code class="codehilite">1024 65000</code></p>
<p>In a <a href="https://www.nginx.com/blog/tuning-nginx/">post from the NGINX blog</a> it is possible to see an explanation for these changes</p>

4
examples/customization/sysctl/patch.json
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@ -4,11 +4,11 @@
"spec": {
"initContainers": [{
"name": "sysctl",
"image": "alpine:3.6",
"image": "alpine:3.10",
"securityContext": {
"privileged": true
},
"command": ["sh", "-c", "sysctl -w net.core.somaxconn=32768; sysctl -w net.ipv4.ip_local_port_range=1024 65535"]
"command": ["sh", "-c", "sysctl -w net.core.somaxconn=32768; sysctl -w net.ipv4.ip_local_port_range='1024 65000'"]
}]
}
}