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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>systemd-journal-gatewayd.service</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><style>
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<a href="../libudev/index.html">gudev </a><span style="float:right">systemd 204</span><hr><div class="refentry"><a name="systemd-journal-gatewayd.service"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>systemd-journal-gatewayd.service, systemd-journal-gatewayd.socket, systemd-journal-gatewayd — HTTP server for journal events</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><p><code class="filename">systemd-journal-gatewayd.service</code></p><p><code class="filename">systemd-journal-gatewayd.socket</code></p><div class="cmdsynopsis"><p><code class="command">/usr/lib/systemd/systemd-journal-gatewayd</code> [OPTIONS...]</p></div></div><div class="refsect1"><a name="idm259769794768"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p><span class="command"><strong>systemd-journal-gatewayd</strong></span> serves journal
events over the network. Clients must connect using
HTTP. The server listens on port 19531 by default.
If <code class="option">--cert=</code> is specified, the server expects
HTTPS connections.</p><p>The program is started by
<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>
and expects to receive a single socket. Use
<span class="command"><strong>systemctl start systemd-journal-gatewayd.socket</strong></span> to start
the service, and <span class="command"><strong>systemctl enable systemd-journal-gatewayd.socket</strong></span>
to have it started on boot.</p></div><div class="refsect1"><a name="idm259766004864"></a><h2 id="Options">Options<a class="headerlink" title="Permalink to this headline" href="#Options">¶</a></h2><p>The following options are understood:</p><div class="variablelist"><dl class="variablelist"><dt id="--help"><span class="term"><code class="option">--help</code>, </span><span class="term"><code class="option">-h</code></span><a class="headerlink" title="Permalink to this term" href="#--help">¶</a></dt><dd><p>Prints a short help
text and exits.</p></dd><dt id="--version"><span class="term"><code class="option">--version</code></span><a class="headerlink" title="Permalink to this term" href="#--version">¶</a></dt><dd><p>Prints a short version
string and exits.</p></dd><dt id="--cert="><span class="term"><code class="option">--cert=</code></span><a class="headerlink" title="Permalink to this term" href="#--cert=">¶</a></dt><dd><p>Specify the path to a file containing a server
certificate in PEM format. This option switches
<span class="command"><strong>systemd-journal-gatewayd</strong></span> into HTTPS mode
and must be used together with
<code class="option">--key=</code>.</p></dd><dt id="--key="><span class="term"><code class="option">--key=</code></span><a class="headerlink" title="Permalink to this term" href="#--key=">¶</a></dt><dd><p>Specify the path to a file containing a server
key in PEM format corresponding to the certificate specified
with <code class="option">--cert=</code>.</p></dd></dl></div></div><div class="refsect1"><a name="idm259765995072"></a><h2 id="Supported URLs">Supported URLs<a class="headerlink" title="Permalink to this headline" href="#Supported%20URLs">¶</a></h2><p>The following URLs are recognized:</p><div class="variablelist"><dl class="variablelist"><dt id="/browse"><span class="term"><code class="uri">/browse</code></span><a class="headerlink" title="Permalink to this term" href="#/browse">¶</a></dt><dd><p>Interactive browsing.</p></dd><dt id="/entries[?option1&option2=value...]"><span class="term"><code class="uri">/entries[?option1&option2=value...]</code></span><a class="headerlink" title="Permalink to this term" href="#/entries%5B?option1&option2=value...%5D">¶</a></dt><dd><p>Retrieval of events in various formats.</p><p>The <code class="option">Accept:</code> part of the HTTP header
determines the format. Supported values are described below.
</p><p>The <code class="option">Range:</code> part of the HTTP header
determines the range of events returned. Supported values are
described below.
</p><p>GET parameters can be used to modify what events are
returned. Supported parameters are described below.</p></dd><dt id="/machine"><span class="term"><code class="uri">/machine</code></span><a class="headerlink" title="Permalink to this term" href="#/machine">¶</a></dt><dd><p>Return a JSON structure describing the machine.</p><p>Example:
</p><pre class="programlisting">
{ "machine_id" : "8cf7ed9d451ea194b77a9f118f3dc446",
"boot_id" : "3d3c9efaf556496a9b04259ee35df7f7",
"hostname" : "fedora",
"os_pretty_name" : "Fedora 19 (Rawhide)",
"virtualization" : "kvm",
...}
</pre><p>
</p></dd><dt id="/fields/FIELD_NAME"><span class="term"><code class="uri">/fields/<em class="replaceable"><code>FIELD_NAME</code></em></code></span><a class="headerlink" title="Permalink to this term" href="#/fields/FIELD_NAME">¶</a></dt><dd><p>Return a list of values of this field present in the logs.</p></dd></dl></div></div><div class="refsect1"><a name="idm259769886656"></a><h2 id="Accept header">Accept header<a class="headerlink" title="Permalink to this headline" href="#Accept%20header">¶</a></h2><p>
<code class="option">Accept: <em class="replaceable"><code>format</code></em></code>
</p><p>Recognized formats:</p><div class="variablelist"><dl class="variablelist"><dt id="text/plain"><span class="term"><code class="constant">text/plain</code></span><a class="headerlink" title="Permalink to this term" href="#text/plain">¶</a></dt><dd><p>The default. Plaintext syslog-like output,
one line per journal entry
(like <span class="command"><strong>journalctl --output short</strong></span>).</p></dd><dt id="application/json"><span class="term"><code class="constant">application/json</code></span><a class="headerlink" title="Permalink to this term" href="#application/json">¶</a></dt><dd><p>Entries are formatted as JSON data structures,
one per line
(like <span class="command"><strong>journalctl --output json</strong></span>).
See <a class="ulink" href="http://www.freedesktop.org/wiki/Software/systemd/json" target="_top">Journal
JSON Format</a> for more information.</p></dd><dt id="application/event-stream"><span class="term"><code class="constant">application/event-stream</code></span><a class="headerlink" title="Permalink to this term" href="#application/event-stream">¶</a></dt><dd><p>Entries are formatted as JSON data structures,
wrapped in a format suitable for <a class="ulink" href="https://developer.mozilla.org/en-US/docs/Server-sent_events/Using_server-sent_events" target="_top">
Server-Sent Events</a>
(like <span class="command"><strong>journalctl --output json-sse</strong></span>).
</p></dd><dt id="application/vnd.fdo.journal"><span class="term"><code class="constant">application/vnd.fdo.journal</code></span><a class="headerlink" title="Permalink to this term" href="#application/vnd.fdo.journal">¶</a></dt><dd><p>Entries are serialized into a binary (but
mostly text-based) stream suitable for backups and network
transfer
(like <span class="command"><strong>journalctl --output export</strong></span>).
See <a class="ulink" href="http://www.freedesktop.org/wiki/Software/systemd/export" target="_top">Journal
Export Format</a> for more information.</p></dd></dl></div></div><div class="refsect1"><a name="idm259769865008"></a><h2 id="Range header">Range header<a class="headerlink" title="Permalink to this headline" href="#Range%20header">¶</a></h2><p>
<code class="option">Range: entries=<em class="replaceable"><code>cursor</code></em>[[:<em class="replaceable"><code>num_skip</code></em>]:<em class="replaceable"><code>num_entries</code></em>]</code>
</p><p>where
<code class="option">cursor</code> is a cursor string,
<code class="option">num_skip</code> is an integer,
<code class="option">num_entries</code> is an unsigned integer.
</p><p>Range defaults to all available events.</p></div><div class="refsect1"><a name="idm259769859888"></a><h2 id="URL GET parameters">URL GET parameters<a class="headerlink" title="Permalink to this headline" href="#URL%20GET%20parameters">¶</a></h2><p>Following parameters can be used as part of the URL:</p><div class="variablelist"><dl class="variablelist"><dt id="follow"><span class="term"><code class="uri">follow</code></span><a class="headerlink" title="Permalink to this term" href="#follow">¶</a></dt><dd><p>wait for new events
(like <span class="command"><strong>journalctl --follow</strong></span>, except that
the number of events returned is not limited).</p></dd><dt id="discrete"><span class="term"><code class="uri">discrete</code></span><a class="headerlink" title="Permalink to this term" href="#discrete">¶</a></dt><dd><p>Test that the specified cursor refers to an
entry in the journal. Returns just this entry.</p></dd><dt id="boot"><span class="term"><code class="uri">boot</code></span><a class="headerlink" title="Permalink to this term" href="#boot">¶</a></dt><dd><p>Limit events to the current boot of the system
(like <span class="command"><strong>journalctl --this--boot</strong></span>).</p></dd><dt id="KEY=match"><span class="term"><code class="uri"><em class="replaceable"><code>KEY</code></em>=<em class="replaceable"><code>match</code></em></code></span><a class="headerlink" title="Permalink to this term" href="#KEY=match">¶</a></dt><dd><p>Match journal fields. See
<a href="systemd.journal-fields.html"><span class="citerefentry"><span class="refentrytitle">systemd.journal-fields</span>(7)</span></a>.</p></dd></dl></div></div><div class="refsect1"><a name="idm259769849184"></a><h2 id="Examples">Examples<a class="headerlink" title="Permalink to this headline" href="#Examples">¶</a></h2><p>Retrieve events from this boot from local journal
in <a class="ulink" href="http://www.freedesktop.org/wiki/Software/systemd/export" target="_top">Journal
Export Format</a>:
</p><pre class="programlisting">
curl --silent -H'Accept: application/vnd.fdo.journal' \
'http://localhost:19531/entries?boot'
</pre><p>
</p><p>Listen for core dumps:
</p><pre class="programlisting">
curl 'http://localhost:19531/entries?follow&MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1'
</pre></div><div class="refsect1"><a name="idm259765215696"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p>
<a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>,
<a href="journalctl.html"><span class="citerefentry"><span class="refentrytitle">journalctl</span>(1)</span></a>,
<a href="systemd-journald.service.html"><span class="citerefentry"><span class="refentrytitle">systemd-journald.service</span>(8)</span></a>,
<a href="systemd.journal-fields.html"><span class="citerefentry"><span class="refentrytitle">systemd.journal-fields</span>(7)</span></a>,
</p></div></div></body></html>
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