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-<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- This file is part of systemd.
-
- Copyright 2012 Zbigniew Jędrzejewski-Szmek
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
-
-<refentry id="systemd-journal-gatewayd.service" conditional='HAVE_MICROHTTPD'
- xmlns:xi="http://www.w3.org/2001/XInclude">
-
- <refentryinfo>
- <title>systemd-journal-gatewayd.service</title>
- <productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Zbigniew</firstname>
- <surname>Jędrzejewski-Szmek</surname>
- <email>zbyszek@in.waw.pl</email>
- </author>
- </authorgroup>
- </refentryinfo>
-
- <refmeta>
- <refentrytitle>systemd-journal-gatewayd.service</refentrytitle>
- <manvolnum>8</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>systemd-journal-gatewayd.service</refname>
- <refname>systemd-journal-gatewayd.socket</refname>
- <refname>systemd-journal-gatewayd</refname>
- <refpurpose>HTTP server for journal events</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <para><filename>systemd-journal-gatewayd.service</filename></para>
- <para><filename>systemd-journal-gatewayd.socket</filename></para>
- <cmdsynopsis>
- <command>/usr/lib/systemd/systemd-journal-gatewayd</command>
- <arg choice="opt" rep="repeat">OPTIONS</arg>
- </cmdsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para><command>systemd-journal-gatewayd</command> serves journal
- events over the network. Clients must connect using
- HTTP. The server listens on port 19531 by default.
- If <option>--cert=</option> is specified, the server expects
- HTTPS connections.</para>
-
- <para>The program is started by
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
- and expects to receive a single socket. Use
- <command>systemctl start systemd-journal-gatewayd.socket</command> to start
- the service, and <command>systemctl enable systemd-journal-gatewayd.socket</command>
- to have it started on boot.</para>
- </refsect1>
-
- <refsect1>
- <title>Options</title>
-
- <para>The following options are understood:</para>
-
- <variablelist>
- <varlistentry>
- <term><option>--cert=</option></term>
-
- <listitem><para>Specify the path to a file containing a server
- certificate in PEM format. This option switches
- <command>systemd-journal-gatewayd</command> into HTTPS mode
- and must be used together with
- <option>--key=</option>.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--key=</option></term>
-
- <listitem><para>Specify the path to a file containing a server
- key in PEM format corresponding to the certificate specified
- with <option>--cert=</option>.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>-D <replaceable>DIR</replaceable></option></term>
- <term><option>--directory=<replaceable>DIR</replaceable></option></term>
-
- <listitem><para>Takes a directory path as argument. If
- specified, <command>systemd-journal-gatewayd</command> will serve the
- specified journal directory <replaceable>DIR</replaceable> instead of
- the default runtime and system journal paths.</para></listitem>
- </varlistentry>
-
- <xi:include href="standard-options.xml" xpointer="help" />
- <xi:include href="standard-options.xml" xpointer="version" />
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Supported URLs</title>
-
- <para>The following URLs are recognized:</para>
-
- <variablelist>
- <varlistentry>
- <term><uri>/browse</uri></term>
-
- <listitem><para>Interactive browsing.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><uri>/entries[?option1&amp;option2=value...]</uri></term>
-
- <listitem><para>Retrieval of events in various formats.</para>
-
- <para>The <option>Accept:</option> part of the HTTP header
- determines the format. Supported values are described below.
- </para>
-
- <para>The <option>Range:</option> part of the HTTP header
- determines the range of events returned. Supported values are
- described below.
- </para>
-
- <para>GET parameters can be used to modify what events are
- returned. Supported parameters are described below.</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term><uri>/machine</uri></term>
-
- <listitem><para>Return a JSON structure describing the machine.</para>
-
- <para>Example:
- <programlisting>{ "machine_id" : "8cf7ed9d451ea194b77a9f118f3dc446",
- "boot_id" : "3d3c9efaf556496a9b04259ee35df7f7",
- "hostname" : "fedora",
- "os_pretty_name" : "Fedora 19 (Rawhide)",
- "virtualization" : "kvm",
- ...}</programlisting>
- </para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term><uri>/fields/<replaceable>FIELD_NAME</replaceable></uri></term>
-
- <listitem><para>Return a list of values of this field present in the logs.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Accept header</title>
-
- <para>
- <option>Accept: <replaceable>format</replaceable></option>
- </para>
-
- <para>Recognized formats:</para>
-
- <variablelist>
- <varlistentry>
- <term><constant>text/plain</constant></term>
-
- <listitem><para>The default. Plaintext syslog-like output,
- one line per journal entry
- (like <command>journalctl --output short</command>).</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term><constant>application/json</constant></term>
-
- <listitem><para>Entries are formatted as JSON data structures,
- one per line
- (like <command>journalctl --output json</command>).
- See <ulink
- url="http://www.freedesktop.org/wiki/Software/systemd/json">Journal
- JSON Format</ulink> for more information.</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term><constant>text/event-stream</constant></term>
-
- <listitem><para>Entries are formatted as JSON data structures,
- wrapped in a format suitable for <ulink
- url="https://developer.mozilla.org/en-US/docs/Server-sent_events/Using_server-sent_events">
- Server-Sent Events</ulink>
- (like <command>journalctl --output json-sse</command>).
- </para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term><constant>application/vnd.fdo.journal</constant></term>
-
- <listitem><para>Entries are serialized into a binary (but
- mostly text-based) stream suitable for backups and network
- transfer
- (like <command>journalctl --output export</command>).
- See <ulink
- url="http://www.freedesktop.org/wiki/Software/systemd/export">Journal
- Export Format</ulink> for more information.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Range header</title>
-
- <para>
- <option>Range: entries=<replaceable>cursor</replaceable>[[:<replaceable>num_skip</replaceable>]:<replaceable>num_entries</replaceable>]</option>
- </para>
-
- <para>where
- <option>cursor</option> is a cursor string,
- <option>num_skip</option> is an integer,
- <option>num_entries</option> is an unsigned integer.
- </para>
-
- <para>Range defaults to all available events.</para>
- </refsect1>
-
- <refsect1>
- <title>URL GET parameters</title>
-
- <para>Following parameters can be used as part of the URL:</para>
-
- <variablelist>
- <varlistentry>
- <term><uri>follow</uri></term>
-
- <listitem><para>wait for new events
- (like <command>journalctl --follow</command>, except that
- the number of events returned is not limited).</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term><uri>discrete</uri></term>
-
- <listitem><para>Test that the specified cursor refers to an
- entry in the journal. Returns just this entry.</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
- <term><uri>boot</uri></term>
-
- <listitem><para>Limit events to the current boot of the system
- (like <command>journalctl --this-boot</command>).</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><uri><replaceable>KEY</replaceable>=<replaceable>match</replaceable></uri></term>
-
- <listitem><para>Match journal fields. See
- <citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
- </listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>Examples</title>
- <para>Retrieve events from this boot from local journal
- in <ulink
- url="http://www.freedesktop.org/wiki/Software/systemd/export">Journal
- Export Format</ulink>:
- <programlisting>curl --silent -H'Accept: application/vnd.fdo.journal' \
- 'http://localhost:19531/entries?boot'</programlisting>
- </para>
-
- <para>Listen for core dumps:
- <programlisting>curl 'http://localhost:19531/entries?follow&amp;MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1'</programlisting></para>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
- <para>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
- </para>
- </refsect1>
-
-</refentry>