systemd-journal-gatewayd.service(8)

1SYSTEMD-JOURNAL-GATEWAYDs.ySsEtReVmIdC-Ej(o8u)rnal-gatewSaYySdT.EsMeDr-vJiOcUeRNAL-GATEWAYD.SERVICE(8)
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NAME

6       systemd-journal-gatewayd.service, systemd-journal-gatewayd.socket,
7       systemd-journal-gatewayd - HTTP server for journal events
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SYNOPSIS

10       systemd-journal-gatewayd.service
11
12       systemd-journal-gatewayd.socket
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14       /usr/lib/systemd/systemd-journal-gatewayd [OPTIONS...]
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DESCRIPTION

17       systemd-journal-gatewayd serves journal events over the network.
18       Clients must connect using HTTP. The server listens on port 19531 by
19       default. If --cert= is specified, the server expects HTTPS connections.
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21       The program is started by systemd(1) and expects to receive a single
22       socket. Use systemctl start systemd-journal-gatewayd.socket to start
23       the service, and systemctl enable systemd-journal-gatewayd.socket to
24       have it started on boot.
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OPTIONS

27       The following options are understood:
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29       --cert=
30           Specify the path to a file containing a server certificate in PEM
31           format. This option switches systemd-journal-gatewayd into HTTPS
32           mode and must be used together with --key=.
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34       --key=
35           Specify the path to a file containing a server key in PEM format
36           corresponding to the certificate specified with --cert=.
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38       -h, --help
39           Print a short help text and exit.
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41       --version
42           Print a short version string and exit.
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SUPPORTED URLS

45       The following URLs are recognized:
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47       /browse
48           Interactive browsing.
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50       /entries[?option1&option2=value...]
51           Retrieval of events in various formats.
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53           The Accept: part of the HTTP header determines the format.
54           Supported values are described below.
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56           The Range: part of the HTTP header determines the range of events
57           returned. Supported values are described below.
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59           GET parameters can be used to modify what events are returned.
60           Supported parameters are described below.
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62       /machine
63           Return a JSON structure describing the machine.
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65           Example:
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67               { "machine_id" : "8cf7ed9d451ea194b77a9f118f3dc446",
68                 "boot_id" : "3d3c9efaf556496a9b04259ee35df7f7",
69                 "hostname" : "fedora",
70                 "os_pretty_name" : "Fedora 19 (Rawhide)",
71                 "virtualization" : "kvm",
72                 ...}
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75       /fields/FIELD_NAME
76           Return a list of values of this field present in the logs.
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ACCEPT HEADER

79       Accept: format
80
81       Recognized formats:
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83       text/plain
84           The default. Plaintext syslog-like output, one line per journal
85           entry (like journalctl --output short).
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87       application/json
88           Entries are formatted as JSON data structures, one per line (like
89           journalctl --output json). See Journal JSON Format[1] for more
90           information.
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92       application/event-stream
93           Entries are formatted as JSON data structures, wrapped in a format
94           suitable for Server-Sent Events[2] (like journalctl --output
95           json-sse).
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97       application/vnd.fdo.journal
98           Entries are serialized into a binary (but mostly text-based) stream
99           suitable for backups and network transfer (like journalctl --output
100           export). See Journal Export Format[3] for more information.
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RANGE HEADER

103       Range: entries=cursor[[:num_skip]:num_entries]
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105       where cursor is a cursor string, num_skip is an integer, num_entries is
106       an unsigned integer.
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108       Range defaults to all available events.
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URL GET PARAMETERS

111       Following parameters can be used as part of the URL:
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113       follow
114           wait for new events (like journalctl --follow, except that the
115           number of events returned is not limited).
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117       discrete
118           Test that the specified cursor refers to an entry in the journal.
119           Returns just this entry.
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121       boot
122           Limit events to the current boot of the system (like journalctl
123           --this--boot).
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125       KEY=match
126           Match journal fields. See systemd.journal-fields(7).
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EXAMPLES

129       Retrieve events from this boot from local journal in Journal Export
130       Format[3]:
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132           curl --silent -H'Accept: application/vnd.fdo.journal' \
133                  'http://localhost:19531/entries?boot'
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135       Listen for core dumps:
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137           curl 'http://localhost:19531/entries?follow&MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1'
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NOTES

144        1. Journal JSON Format
145           http://www.freedesktop.org/wiki/Software/systemd/json
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147        2. Server-Sent Events
148           https://developer.mozilla.org/en-US/docs/Server-sent_events/Using_server-sent_events
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150        3. Journal Export Format
151           http://www.freedesktop.org/wiki/Software/systemd/export
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