文件操作 - backend_servers.html

文件: /usr/share/doc/varnish/html/tutorial/backend_servers.html

编辑文件内容

<!DOCTYPE html>

<title>Backend servers &#8212; Varnish version 7.5.0 documentation</title>
    <link rel="stylesheet" type="text/css" href="../_static/pygments.css?v=fa44fd50" />
    <link rel="stylesheet" type="text/css" href="../_static/classic.css?v=e2714048" />
    
    <script src="../_static/documentation_options.js?v=8214db13"></script>
    <script src="../_static/doctools.js?v=888ff710"></script>
    <script src="../_static/sphinx_highlight.js?v=dc90522c"></script>
    
    <link rel="index" title="Index" href="../genindex.html" />
    <link rel="search" title="Search" href="../search.html" />
    <link rel="next" title="Peculiarities" href="peculiarities.html" />
    <link rel="prev" title="Put Varnish on port 80" href="putting_varnish_on_port_80.html" /> 
  </head><body>
    <div class="related" role="navigation" aria-label="related navigation">
      <h3>Navigation</h3>
      <ul>
        <li class="right" style="margin-right: 10px">
          <a href="../genindex.html" title="General Index"
             accesskey="I">index</a></li>
        <li class="right" >
          <a href="peculiarities.html" title="Peculiarities"
             accesskey="N">next</a> |</li>
        <li class="right" >
          <a href="putting_varnish_on_port_80.html" title="Put Varnish on port 80"
             accesskey="P">previous</a> |</li>
        <li class="nav-item nav-item-0"><a href="../index.html">Varnish version 7.5.0 documentation</a> &#187;</li>
          <li class="nav-item nav-item-1"><a href="index.html" accesskey="U">The Varnish Tutorial</a> &#187;</li>
        <li class="nav-item nav-item-this"><a href="">Backend servers</a></li> 
      </ul>
    </div>

<div class="document">
      <div class="documentwrapper">
        <div class="bodywrapper">
          <div class="body" role="main">
            
  <section id="backend-servers">
<span id="tutorial-backend-servers"></span><h1>Backend servers<a class="headerlink" href="#backend-servers" title="Link to this heading">¶</a></h1>
<p>Varnish has a concept of <cite>backend</cite> or origin servers. A backend
server is the server providing the content Varnish will accelerate via the cache.</p>
<p>Our first task is to tell Varnish where it can find its content. Start
your favorite text editor and open the Varnish default configuration
file. If you installed from source this is
<cite>/usr/local/etc/varnish/default.vcl</cite>, if you installed from a package it
is probably <cite>/etc/varnish/default.vcl</cite>.</p>
<p>If you’ve been following the tutorial there is probably a section of
the configuration that looks like this:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">vcl</span> <span class="mf">4.0</span><span class="p">;</span>

<span class="n">backend</span> <span class="n">default</span> <span class="p">{</span>
    <span class="o">.</span><span class="n">host</span> <span class="o">=</span> <span class="s2">&quot;www.varnish-cache.org&quot;</span><span class="p">;</span>
    <span class="o">.</span><span class="n">port</span> <span class="o">=</span> <span class="s2">&quot;80&quot;</span><span class="p">;</span>
<span class="p">}</span>
</pre></div>
</div>
<p>This means we set up a backend in Varnish that fetches content from
the host www.varnish-cache.org on port 80.</p>
<p>Since you probably don’t want to be mirroring varnish-cache.org we
need to get Varnish to fetch content from your own origin
server. We’ve already bound Varnish to the public port 80 on the
server so now we need to tie it to the origin.</p>
<p>For this example, let’s pretend the origin server is running on
localhost, port 8080.:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">vcl</span> <span class="mf">4.0</span><span class="p">;</span>

<span class="n">backend</span> <span class="n">default</span> <span class="p">{</span>
  <span class="o">.</span><span class="n">host</span> <span class="o">=</span> <span class="s2">&quot;127.0.0.1&quot;</span><span class="p">;</span>
  <span class="o">.</span><span class="n">port</span> <span class="o">=</span> <span class="s2">&quot;8080&quot;</span><span class="p">;</span>
<span class="p">}</span>
</pre></div>
</div>
<p>Varnish can have several backends defined and can even join several backends
together into clusters of backends for load balancing purposes, having Varnish
pick one backend based on different algorithms.</p>
<p>Next, let’s have a look at some of what makes Varnish unique and what you can do with it.</p>
</section>

<div class="clearer"></div>
          </div>
        </div>
      </div>
      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
        <div class="sphinxsidebarwrapper">
  <div>
    <h4>Previous topic</h4>
    <p class="topless"><a href="putting_varnish_on_port_80.html"
                          title="previous chapter">Put Varnish on port 80</a></p>
  </div>
  <div>
    <h4>Next topic</h4>
    <p class="topless"><a href="peculiarities.html"
                          title="next chapter">Peculiarities</a></p>
  </div>
  <div role="note" aria-label="source link">
    <h3>This Page</h3>
    <ul class="this-page-menu">
      <li><a href="../_sources/tutorial/backend_servers.rst.txt"
            rel="nofollow">Show Source</a></li>
    </ul>
   </div>
<div id="searchbox" style="display: none" role="search">
  <h3 id="searchlabel">Quick search</h3>
    <div class="searchformwrapper">
    <form class="search" action="../search.html" method="get">
      <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/>
      <input type="submit" value="Go" />
    </form>
    </div>
</div>
<script>document.getElementById('searchbox').style.display = "block"</script>
        </div>
      </div>
      <div class="clearer"></div>
    </div>
    <div class="related" role="navigation" aria-label="related navigation">
      <h3>Navigation</h3>
      <ul>
        <li class="right" style="margin-right: 10px">
          <a href="../genindex.html" title="General Index"
             >index</a></li>
        <li class="right" >
          <a href="peculiarities.html" title="Peculiarities"
             >next</a> |</li>
        <li class="right" >
          <a href="putting_varnish_on_port_80.html" title="Put Varnish on port 80"
             >previous</a> |</li>
        <li class="nav-item nav-item-0"><a href="../index.html">Varnish version 7.5.0 documentation</a> &#187;</li>
          <li class="nav-item nav-item-1"><a href="index.html" >The Varnish Tutorial</a> &#187;</li>
        <li class="nav-item nav-item-this"><a href="">Backend servers</a></li> 
      </ul>
    </div>
    <div class="footer" role="contentinfo">
    &#169; Copyright 2010-2014, Varnish Software AS.
      Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 7.2.6.
    </div>
  </body>
</html>

文件操作 - backend_servers.html

文件: /usr/share/doc/varnish/html/tutorial/backend_servers.html

编辑文件内容

修改文件时间

删除文件