12b42c7667
This did not really work out as we had hoped. Trying to do this upstream introduced several problems that probably makes it better suited as a downstream patch after all. At any rate, it is not releaseable in the current state, so we at least need to revert this before the release. * by adjusting the path to binaries, but not do the same thing to the search path we end up with inconsistent man-pages. Adjusting the search path too would be quite messy, and it is not at all obvious that this is worth the effort, but at any rate it would have to be done before we could ship this. * this means that distributed man-pages does not make sense as they depend on config options, and for better or worse we are still distributing man pages, so that is something that definitely needs sorting out before we could ship with this patch. * we have long held that split-usr is only minimally supported in order to boot, and something we hope will eventually go away. So before we start adding even more magic/effort in order to make this work nicely, we should probably question if it makes sense at all.
317 lines
12 KiB
XML
317 lines
12 KiB
XML
<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2012 Zbigniew Jędrzejewski-Szmek
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="systemd-journal-remote" conditional='HAVE_MICROHTTPD'
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>systemd-journal-remote</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Zbigniew</firstname>
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<surname>Jędrzejewski-Szmek</surname>
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<email>zbyszek@in.waw.pl</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-journal-remote</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-journal-remote</refname>
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<refpurpose>Receive journal messages over the network</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>systemd-journal-remote</command>
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<arg choice="opt" rep="repeat">OPTIONS</arg>
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<arg choice="opt" rep="norepeat">-o/--output=<replaceable>DIR</replaceable>|<replaceable>FILE</replaceable></arg>
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<arg choice="opt" rep="repeat">SOURCES</arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>
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<filename>systemd-journal-remote</filename> is a command to
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receive serialized journal events and store them to the journal.
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Input streams are in the
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<ulink url="http://www.freedesktop.org/wiki/Software/systemd/export">
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Journal Export Format
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</ulink>,
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i.e. like the output from
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<command>journalctl --output=export</command>. For transport over
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the network, this serialized stream is usually carried over an
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HTTPS connection.
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</para>
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</refsect1>
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<refsect1>
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<title>Sources</title>
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<para>
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Sources can be either "active"
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(<command>systemd-journal-remote</command> requests and pulls
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the data), or "passive"
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(<command>systemd-journal-remote</command> waits for a
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connection and then receives events pushed by the other side).
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</para>
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<para>
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<command>systemd-journal-remote</command> can read more than one
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event stream at a time. They will be interleaved in the output
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file. In case of "active" connections, each "source" is one
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stream, and in case of "passive" connections, each connection can
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result in a separate stream. Sockets can be configured in
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"accept" mode (i.e. only one connection), or "listen" mode (i.e.
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multiple connections, each resulting in a stream).
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</para>
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<para>
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When there are no more connections, and no more can be created
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(there are no listening sockets), then
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<command>systemd-journal-remote</command> will exit.
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</para>
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<para>Active sources can be specified in the following
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ways:</para>
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<variablelist>
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<varlistentry>
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<listitem><para>When <option>-</option> is given as a
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positional argument, events will be read from standard input.
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Other positional arguments will be treated as filenames
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to open and read from.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--url=<replaceable>ADDRESS</replaceable></option></term>
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<listitem><para>With the
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<option>--url=<replaceable>ADDRESS</replaceable></option> option,
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events will be retrieved using HTTP from
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<replaceable>ADDRESS</replaceable>. This URL should refer to the
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root of a remote
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<citerefentry><refentrytitle>systemd-journal-gatewayd</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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instance (e.g. <ulink>http://some.host:19531/</ulink> or
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<ulink>https://some.host:19531/</ulink>).</para></listitem>
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</varlistentry>
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</variablelist>
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<para>Passive sources can be specified in the following
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ways:</para>
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<variablelist>
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<varlistentry>
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<term><option>--listen-raw=<replaceable>ADDRESS</replaceable></option></term>
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<listitem><para><replaceable>ADDRESS</replaceable> must be an
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address suitable for <option>ListenStream=</option> (cf.
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<citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>).
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<command>systemd-journal-remote</command> will listen on this
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socket for connections. Each connection is expected to be a
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stream of journal events.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--listen-http=<replaceable>ADDRESS</replaceable></option></term>
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<term><option>--listen-https=<replaceable>ADDRESS</replaceable></option></term>
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<listitem><para><replaceable>ADDRESS</replaceable> must be
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either a negative integer, in which case it will be
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interpreted as the (negated) file descriptor number, or an
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address suitable for <option>ListenStream=</option> (c.f.
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<citerefentry><refentrytitle>systemd.socket</refentrytitle><manvolnum>5</manvolnum></citerefentry>).
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In the first case, matching file descriptor must be inherited
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through
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<varname>$LISTEN_FDS</varname>/<varname>$LISTEN_PID</varname>.
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In the second case, an HTTP or HTTPS server will be spawned on
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this port, respectively for <option>--listen-http</option> and
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<option>--listen-https</option>. Currently, only POST requests
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to <filename>/upload</filename> with <literal>Content-Type:
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application/vnd.fdo.journal</literal> are supported.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>$LISTEN_FDS</varname></term>
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<listitem><para><command>systemd-journal-remote</command>
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supports the
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<varname>$LISTEN_FDS</varname>/<varname>$LISTEN_PID</varname>
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protocol. Open sockets inherited through socket activation
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behave like those opened with <option>--listen-raw=</option>
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described above, unless they are specified as an argument in
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<option>--listen-http=-<replaceable>n</replaceable></option>
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or
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<option>--listen-https=-<replaceable>n</replaceable></option>
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above. In the latter case, an HTTP or HTTPS server will be
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spawned using this descriptor and connections must be made
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over the HTTP protocol.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Sinks</title>
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<para>The location of the output journal can be specified
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with <option>-o</option> or <option>--output=</option>. For "active"
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sources, this option is required.
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</para>
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<variablelist>
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<varlistentry>
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<term><option>--output=<replaceable>FILE</replaceable></option></term>
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<listitem><para>Will write to this journal file. The filename
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must end with <filename>.journal</filename>. The file will be
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created if it does not exist. If necessary (journal file full,
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or corrupted), the file will be renamed following normal
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journald rules and a new journal file will be created in its
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stead.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--output=<replaceable>DIR</replaceable></option></term>
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<listitem><para>Will create journal files underneath directory
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<replaceable>DIR</replaceable>. The directory must exist. If
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necessary (journal files over size, or corrupted), journal
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files will be rotated following normal journald rules. Names
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of files underneath <replaceable>DIR</replaceable> will be
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generated using the rules described below.</para></listitem>
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</varlistentry>
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</variablelist>
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<para>If <option>--output=</option> is not used, the output
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directory <filename>/var/log/journal/remote/</filename> will be
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used. In case the output file is not specified, journal files
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will be created underneath the selected directory. Files will be
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called
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<filename>remote-<replaceable>hostname</replaceable>.journal</filename>,
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where the <replaceable>hostname</replaceable> part is the
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escaped hostname of the source endpoint of the connection, or the
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numerical address if the hostname cannot be determined.</para>
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<para>In case of "active" sources, the output file name must
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always be given explicitly.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>--split-mode</option></term>
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<listitem><para>One of <constant>none</constant> or
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<constant>host</constant>. For the first, only one output
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journal file is used. For the latter, a separate output file
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is used, based on the hostname of the other endpoint of a
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connection.</para>
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<para>In case of "active" sources, the output file name must
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always be given explicitly and only <constant>none</constant>
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is allowed.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--compress</option></term>
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<term><option>--no-compress</option></term>
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<listitem><para>Compress or not, respectively, the data in the
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journal using XZ.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--seal</option></term>
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<term><option>--no-seal</option></term>
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<listitem><para>Periodically sign or not, respectively, the
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data in the journal using Forward Secure Sealing.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--getter=<replaceable>PROG --option1 --option2</replaceable></option></term>
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<listitem><para>Program to invoke to retrieve data. The journal
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event stream must be generated on standard output.</para>
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<para>Examples:</para>
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<programlisting>--getter='curl "-HAccept: application/vnd.fdo.journal" https://some.host:19531/'</programlisting>
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<programlisting>--getter='wget --header="Accept: application/vnd.fdo.journal" -O- https://some.host:19531/'</programlisting>
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</listitem>
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</varlistentry>
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<xi:include href="standard-options.xml" xpointer="help" />
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<xi:include href="standard-options.xml" xpointer="version" />
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<para>Copy local journal events to a different journal directory:
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<programlisting>
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journalctl -o export | systemd-journal-remote -o /tmp/dir -
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</programlisting>
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</para>
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<para>Retrieve events from a remote
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<citerefentry><refentrytitle>systemd-journal-gatewayd</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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instance and store them in
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<filename>/var/log/journal/some.host/remote-some~host.journal</filename>:
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<programlisting>
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systemd-journal-remote --url http://some.host:19531/
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</programlisting>
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</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd-journal-upload</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-journal-gatewayd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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<citerefentry><refentrytitle>journal-remote.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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