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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Upgrading to Varnish 4.1 — Varnish version 5.2.1 documentation</title> <link rel="stylesheet" href="../_static/classic.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../', VERSION: '5.2.1', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <link rel="index" title="Index" href="../genindex.html" /> <link rel="search" title="Search" href="../search.html" /> <link rel="top" title="Varnish version 5.2.1 documentation" href="../index.html" /> <link rel="up" title="What's new / Upgrading" href="index.html" /> <link rel="next" title="Upgrading to Varnish 4.0" href="upgrading-4.0.html" /> <link rel="prev" title="Changes in Varnish 4.1" href="changes-4.1.html" /> </head> <body role="document"> <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="upgrading-4.0.html" title="Upgrading to Varnish 4.0" accesskey="N">next</a> |</li> <li class="right" > <a href="changes-4.1.html" title="Changes in Varnish 4.1" accesskey="P">previous</a> |</li> <li class="nav-item nav-item-0"><a href="../index.html">Varnish version 5.2.1 documentation</a> »</li> <li class="nav-item nav-item-1"><a href="index.html" accesskey="U">What's new / Upgrading</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <div class="section" id="upgrading-to-varnish-4-1"> <span id="whatsnew-upgrading-4-1"></span><h1>Upgrading to Varnish 4.1<a class="headerlink" href="#upgrading-to-varnish-4-1" title="Permalink to this headline">¶</a></h1> <div class="section" id="changes-to-vcl"> <h2>Changes to VCL<a class="headerlink" href="#changes-to-vcl" title="Permalink to this headline">¶</a></h2> <div class="section" id="data-type-conversion-functions-now-take-a-fallback"> <h3>Data type conversion functions now take a fallback<a class="headerlink" href="#data-type-conversion-functions-now-take-a-fallback" title="Permalink to this headline">¶</a></h3> <p>Data type conversion functions in the std vmod now takes an additional argument <em>fallback</em>, which is returned if the conversion does not succeed.</p> </div> <div class="section" id="version-statement-is-kept"> <h3>Version statement is kept<a class="headerlink" href="#version-statement-is-kept" title="Permalink to this headline">¶</a></h3> <p>The VCL syntax has not chanced significantly, and as such the Varnish 4.0 version marker is kept for Varnish 4.1.</p> <p>One of the initial lines in a Varnish 4.1 VCL should read:</p> <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">vcl</span> <span class="mf">4.0</span><span class="p">;</span> </pre></div> </div> </div> <div class="section" id="remote-address-accessors"> <h3>Remote address accessors<a class="headerlink" href="#remote-address-accessors" title="Permalink to this headline">¶</a></h3> <p>New in 4.1 is the <cite>local.ip</cite> and <cite>remote.ip</cite> representing the (local) TCP connection endpoints.</p> <p>With PROXY listeners the <cite>server.ip</cite> and <cite>client.ip</cite> are set from the PROXY preamble. On normal HTTP listeners the behaviour is unchanged.</p> </div> </div> <div class="section" id="management-interface"> <h2>Management interface<a class="headerlink" href="#management-interface" title="Permalink to this headline">¶</a></h2> <p>The management interface enabled with <code class="docutils literal"><span class="pre">-M</span></code> previously supported the telnet protocol.</p> <p>Support for telnet control sequences have been retired. Replacement clients like netcat or (preferred) <code class="docutils literal"><span class="pre">varnishadm</span></code> should be used instead.</p> </div> <div class="section" id="runtime-users-and-groups"> <h2>Runtime users and groups<a class="headerlink" href="#runtime-users-and-groups" title="Permalink to this headline">¶</a></h2> <p>With the new jail support, an additional runtime user (<cite>vcache</cite>) should be used for the Varnish worker child process.</p> <p>Additionally, the <code class="docutils literal"><span class="pre">varnishlog</span></code>, <code class="docutils literal"><span class="pre">varnishncsa</span></code> and other Varnish shared log utilities must now be run in a context with <cite>varnish</cite> group membership.</p> </div> <div class="section" id="changes-to-parameters"> <h2>Changes to parameters<a class="headerlink" href="#changes-to-parameters" title="Permalink to this headline">¶</a></h2> <p><cite>vcl_cooldown</cite> is new, and decides how long time a VCL is kept warm after being replaced as the active VCL.</p> <p>The following parameters have been retired:</p> <ul class="simple"> <li><cite>group</cite> (security revamp)</li> <li><cite>group_cc</cite> (security revamp)</li> <li><cite>listen_address</cite> (security revamp)</li> <li><cite>pool_vbc</cite></li> <li><cite>timeout_req</cite> - merged with <cite>timeout_idle</cite>.</li> <li><cite>user</cite> (security revamp)</li> </ul> <p>Minor changes of default values on <cite>workspace_session</cite> and <cite>vsl_mask</cite>.</p> </div> </div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h3><a href="../index.html">Table Of Contents</a></h3> <ul> <li><a class="reference internal" href="#">Upgrading to Varnish 4.1</a><ul> <li><a class="reference internal" href="#changes-to-vcl">Changes to VCL</a><ul> <li><a class="reference internal" href="#data-type-conversion-functions-now-take-a-fallback">Data type conversion functions now take a fallback</a></li> <li><a class="reference internal" href="#version-statement-is-kept">Version statement is kept</a></li> <li><a class="reference internal" href="#remote-address-accessors">Remote address accessors</a></li> </ul> </li> <li><a class="reference internal" href="#management-interface">Management interface</a></li> <li><a class="reference internal" href="#runtime-users-and-groups">Runtime users and groups</a></li> <li><a class="reference internal" href="#changes-to-parameters">Changes to parameters</a></li> </ul> </li> </ul> <h4>Previous topic</h4> <p class="topless"><a href="changes-4.1.html" title="previous chapter">Changes in Varnish 4.1</a></p> <h4>Next topic</h4> <p class="topless"><a href="upgrading-4.0.html" title="next chapter">Upgrading to Varnish 4.0</a></p> <div role="note" aria-label="source link"> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../_sources/whats-new/upgrading-4.1.txt" rel="nofollow">Show Source</a></li> </ul> </div> <div id="searchbox" style="display: none" role="search"> <h3>Quick search</h3> <form class="search" action="../search.html" method="get"> <div><input type="text" name="q" /></div> <div><input type="submit" value="Go" /></div> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> <script type="text/javascript">$('#searchbox').show(0);</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="upgrading-4.0.html" title="Upgrading to Varnish 4.0" >next</a> |</li> <li class="right" > <a href="changes-4.1.html" title="Changes in Varnish 4.1" >previous</a> |</li> <li class="nav-item nav-item-0"><a href="../index.html">Varnish version 5.2.1 documentation</a> »</li> <li class="nav-item nav-item-1"><a href="index.html" >What's new / Upgrading</a> »</li> </ul> </div> <div class="footer" role="contentinfo"> © Copyright 2010-2014, Varnish Software AS. 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