ingress-nginx-helm/enhancements/20231001-split-containers/index.html

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<!doctype html><html lang=en class=no-js> <head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><link href=https://kubernetes.github.io/ingress-nginx/enhancements/20231001-split-containers/ rel=canonical><link rel=icon href=../../assets/images/favicon.png><meta name=generator content="mkdocs-1.5.3, mkdocs-material-9.4.5"><title>Proposal to split containers - Ingress-Nginx Controller</title><link rel=stylesheet href=../../assets/stylesheets/main.6a10b989.min.css><link rel=stylesheet href=../../assets/stylesheets/palette.356b1318.min.css><link rel=preconnect href=https://fonts.gstatic.com crossorigin><link rel=stylesheet href="https://fonts.googleapis.com/css?family=Roboto:300,300i,400,400i,700,700i%7CRoboto+Mono:400,400i,700,700i&display=fallback"><style>:root{--md-text-font:"Roboto";--md-code-font:"Roboto Mono"}</style><link rel=stylesheet href=../../extra.css><script>__md_scope=new URL("../..",location),__md_hash=e=>[...e].reduce((e,_)=>(e<<5)-e+_.charCodeAt(0),0),__md_get=(e,_=localStorage,t=__md_scope)=>JSON.parse(_.getItem(t.pathname+"."+e)),__md_set=(e,_,t=localStorage,a=__md_scope)=>{try{t.setItem(a.pathname+"."+e,JSON.stringify(_))}catch(e){}}</script></head> <body dir=ltr data-md-color-scheme=default data-md-color-primary=teal data-md-color-accent=green> <input class=md-toggle data-md-toggle=drawer type=checkbox id=__drawer autocomplete=off> <input class=md-toggle data-md-toggle=search type=checkbox id=__search autocomplete=off> <label class=md-overlay for=__drawer></label> <div data-md-component=skip> <a href=#proposal-to-split-containers class=md-skip> Skip to content </a> </div> <div data-md-component=announce> </div> <header class="md-header md-header--shadow md-header--lifted" data-md-component=header> <nav class="md-header__inner md-grid" aria-label=Header> <a href=../.. title="Ingress-Nginx Controller" class="md-header__button md-logo" aria-label="Ingress-Nginx Controller" data-md-component=logo> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 8a3 3 0 0 0 3-3 3 3 0 0 0-3-3 3 3 0 0 0-3 3 3 3 0 0 0 3 3m0 3.54C9.64 9.35 6.5 8 3 8v11c3.5 0 6.64 1.35 9 3.54 2.36-2.19 5.5-3.54 9-3.54V8c-3.5 0-6.64 1.35-9 3.54Z"/></svg> </a> <label class="md-header__button md-icon" for=__drawer> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M3 6h18v2H3V6m0 5h18v2H3v-2m0 5h18v2H3v-2Z"/></svg> </label> <div class=md-header__title data-md-component=header-title> <div class=md-header__ellipsis> <div class=md-header__topic> <span class=md-ellipsis> Ingress-Nginx Controller </span> </div> <div class=md-header__topic data-md-component=header-topic> <span class=md-ellipsis> Proposal to split containers </span> </div> </div> </div> <label class="md-header__button md-icon" for=__search> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5Z"/></svg> </label> <div class=md-search data-md-component=search role=dialog> <label class=md-search__overlay for=__search></label> <div class=md-search__inner role=search> <form class=md-search__form name=search> <input type=text class=md-search__input name=query aria-label=Search placeholder=Search autocapitalize=off autocorrect=off autocomplete=off spellcheck=false data-md-component=search-query required> <label class="md-search__icon md-icon" for=__search> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5Z"/></svg> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12Z"/></svg> </label> <nav class=md-search__options aria-label=Search> <button type=reset class="md-search__icon md-icon" title=Clea
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<span class=nt>apiVersion</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">v1</span>
<span class=nt>metadata</span><span class=p>:</span>
<span class=w> </span><span class=nt>name</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">test</span>
<span class=nt>spec</span><span class=p>:</span>
<span class=w> </span><span class=nt>containers</span><span class=p>:</span>
<span class=w> </span><span class="p p-Indicator">-</span><span class=w> </span><span class=nt>name</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">nginx</span>
<span class=w> </span><span class=nt>image</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">nginx:latest</span>
<span class=w> </span><span class=nt>ports</span><span class=p>:</span>
<span class=w> </span><span class="p p-Indicator">-</span><span class=w> </span><span class=nt>containerPort</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">80</span>
<span class=w> </span><span class="p p-Indicator">-</span><span class=w> </span><span class=nt>name</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">othernginx</span>
<span class=w> </span><span class=nt>image</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">alpine:latest</span>
<span class=w> </span><span class=nt>command</span><span class=p>:</span><span class=w> </span><span class="p p-Indicator">[</span><span class=s>&quot;/bin/sh&quot;</span><span class="p p-Indicator">]</span>
<span class=w> </span><span class=nt>args</span><span class=p>:</span><span class=w> </span><span class="p p-Indicator">[</span><span class=s>&quot;-c&quot;</span><span class="p p-Indicator">,</span><span class=w> </span><span class=s>&quot;while</span><span class=nv> </span><span class=s>true;</span><span class=nv> </span><span class=s>do</span><span class=nv> </span><span class=s>date;</span><span class=nv> </span><span class=s>sleep</span><span class=nv> </span><span class=s>3;</span><span class=nv> </span><span class=s>done&quot;</span><span class="p p-Indicator">]</span>
<span class=w> </span><span class=nt>volumeMounts</span><span class=p>:</span>
<span class=w> </span><span class="p p-Indicator">-</span><span class=w> </span><span class=nt>mountPath</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">/var/run/secrets/kubernetes.io/serviceaccount</span>
<span class=w> </span><span class=nt>name</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">emptysecret</span>
<span class=w> </span><span class=nt>volumes</span><span class=p>:</span>
<span class=w> </span><span class="p p-Indicator">-</span><span class=w> </span><span class=nt>name</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">emptysecret</span>
<span class=w> </span><span class=nt>emptyDir</span><span class=p>:</span>
<span class=w> </span><span class=nt>sizeLimit</span><span class=p>:</span><span class=w> </span><span class="l l-Scalar l-Scalar-Plain">1Mi</span>
</code></pre></div> <h3 id=mapped-folders-on-nginx-configuration>Mapped folders on NGINX configuration<a class=headerlink href=#mapped-folders-on-nginx-configuration title="Permanent link"></a></h3> <p><strong>WARNING</strong> We need to be aware of inter mount containers and inode problems. If we mount a file instead of a directory, it may take time to reflect the file value on the target container</p> <ul> <li>"/etc/nginx/lua/?.lua;/etc/nginx/lua/vendor/?.lua;;"; - Lua scripts</li> <li>"/var/log/nginx" - NGINX logs</li> <li>"/tmp/nginx (nginx.pid)" - NGINX pid directory / file, fcgi socket, etc</li> <li>" /etc/nginx/geoip" - GeoIP database directory - OK - /etc/ingress-controller/geoip</li> <li>/etc/nginx/mime.types - Mime types</li> <li>/etc/ingress-controller/ssl - SSL directory (fake cert, auth cert)</li> <li>/etc/ingress-controller/auth - Authentication files</li> <li>/etc/nginx/modsecurity - Modsecurity configuration</li> <li>/etc/nginx/owasp-modsecurity-crs - Modsecurity rules</li> <li>/etc/nginx/tickets.key - SSL tickets - OK - /etc/ingress-controller/tickets.key</li> <li>/etc/nginx/opentelemetry.toml - OTEL config - OK - /etc/ingress-controller/telemetry</li> <li>/etc/nginx/opentracing.json - Opentracing config - OK - /etc/ingress-controller/telemetry</li> <li>/etc/nginx/modules - NGINX modules</li> <li>/etc/nginx/fastcgi_params (maybe) - fcgi params</li> <li>/etc/nginx/template - Template, may be used by controller only</li> </ul> <h5 id=list-of-modules>List of modules<a class=headerlink href=#list-of-modules title="Permanent link"></a></h5> <div class=highlight><pre><span></span><code>ngx_http_auth_digest_module.so ngx_http_modsecurity_module.so
ngx_http_brotli_filter_module.so ngx_http_opentracing_module.so
ngx_http_brotli_static_module.so ngx_stream_geoip2_module.so
ngx_http_geoip2_module.so
</code></pre></div> <h5 id=list-of-files-that-may-be-removed>List of files that may be removed<a class=headerlink href=#list-of-files-that-may-be-removed title="Permanent link"></a></h5> <div class=highlight><pre><span></span><code>-rw-r--r-- 1 www-data www-data 1077 Jun 23 19:44 fastcgi.conf
-rw-r--r-- 1 www-data www-data 1077 Jun 23 19:44 fastcgi.conf.default
-rw-r--r-- 1 www-data www-data 1007 Jun 23 19:44 fastcgi_params
-rw-r--r-- 1 www-data www-data 1007 Jun 23 19:44 fastcgi_params.default
drwxr-xr-x 2 www-data www-data 4096 Jun 23 19:34 geoip
-rw-r--r-- 1 www-data www-data 2837 Jun 23 19:44 koi-utf
-rw-r--r-- 1 www-data www-data 2223 Jun 23 19:44 koi-win
drwxr-xr-x 6 www-data www-data 4096 Sep 19 14:13 lua
-rw-r--r-- 1 www-data www-data 5349 Jun 23 19:44 mime.types
-rw-r--r-- 1 www-data www-data 5349 Jun 23 19:44 mime.types.default
drwxr-xr-x 2 www-data www-data 4096 Jun 23 19:44 modsecurity
drwxr-xr-x 2 www-data www-data 4096 Jun 23 19:44 modules
-rw-r--r-- 1 www-data www-data 18275 Oct 1 21:28 nginx.conf
-rw-r--r-- 1 www-data www-data 2656 Jun 23 19:44 nginx.conf.default
-rwx------ 1 www-data www-data 420 Oct 1 21:28 opentelemetry.toml
-rw-r--r-- 1 www-data www-data 2 Oct 1 21:28 opentracing.json
drwxr-xr-x 7 www-data www-data 4096 Jun 23 19:44 owasp-modsecurity-crs
-rw-r--r-- 1 www-data www-data 636 Jun 23 19:44 scgi_params
-rw-r--r-- 1 www-data www-data 636 Jun 23 19:44 scgi_params.default
drwxr-xr-x 2 www-data www-data 4096 Sep 19 14:13 template
-rw-r--r-- 1 www-data www-data 664 Jun 23 19:44 uwsgi_params
-rw-r--r-- 1 www-data www-data 664 Jun 23 19:44 uwsgi_params.default
-rw-r--r-- 1 www-data www-data 3610 Jun 23 19:44 win-utf
</code></pre></div> </article> </div> </div> </main> <footer class=md-footer> <div class="md-footer-meta md-typeset"> <div class="md-footer-meta__inner md-grid"> <div class=md-copyright> Made with <a href=https://squidfunk.github.io/mkdocs-material/ target=_blank rel=noopener> Material for MkDocs </a> </div> </div> </div> </footer> </div> <div class=md-dialog data-md-component=dialog> <div class="md-dialog__inner md-typeset"></div> </div> <script id=__config type=application/json>{"base": "../..", "features": ["navigation.tabs", "navigation.tabs.sticky", "navigation.instant", "navigation.sections"], "search": "../../assets/javascripts/workers/search.f886a092.min.js", "translations": {"clipboard.copied": "Copied to clipboard", "clipboard.copy": "Copy to clipboard", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.placeholder": "Type to start searching", "search.result.term.missing": "Missing", "select.version": "Select version"}}</script> <script src=../../assets/javascripts/bundle.aecac24b.min.js></script> </body> </html>