systemd-journal-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
8

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       --trust=
39           Specify the path to a file containing a CA certificate in PEM
40           format.
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42       -D DIR, --directory=DIR
43           Takes a directory path as argument. If specified,
44           systemd-journal-gatewayd will serve the specified journal directory
45           DIR instead of the default runtime and system journal paths.
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47       -h, --help
48           Print a short help text and exit.
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50       --version
51           Print a short version string and exit.
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SUPPORTED URLS

54       The following URLs are recognized:
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56       /browse
57           Interactive browsing.
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59       /entries[?option1&option2=value...]
60           Retrieval of events in various formats.
61
62           The Accept: part of the HTTP header determines the format.
63           Supported values are described below.
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65           The Range: part of the HTTP header determines the range of events
66           returned. Supported values are described below.
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68           GET parameters can be used to modify what events are returned.
69           Supported parameters are described below.
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71       /machine
72           Return a JSON structure describing the machine.
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74           Example:
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76               { "machine_id" : "8cf7ed9d451ea194b77a9f118f3dc446",
77                 "boot_id" : "3d3c9efaf556496a9b04259ee35df7f7",
78                 "hostname" : "fedora",
79                 "os_pretty_name" : "Fedora 19 (Rawhide)",
80                 "virtualization" : "kvm",
81                 ...}
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84       /fields/FIELD_NAME
85           Return a list of values of this field present in the logs.
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ACCEPT HEADER

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

112       Range: entries=cursor[[:num_skip]:num_entries]
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114       where cursor is a cursor string, num_skip is an integer, num_entries is
115       an unsigned integer.
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117       Range defaults to all available events.
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URL GET PARAMETERS

120       Following parameters can be used as part of the URL:
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122       follow
123           wait for new events (like journalctl --follow, except that the
124           number of events returned is not limited).
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126       discrete
127           Test that the specified cursor refers to an entry in the journal.
128           Returns just this entry.
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130       boot
131           Limit events to the current boot of the system (like journalctl
132           -b).
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134       KEY=match
135           Match journal fields. See systemd.journal-fields(7).
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EXAMPLES

138       Retrieve events from this boot from local journal in Journal Export
139       Format[3]:
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141           curl --silent -H'Accept: application/vnd.fdo.journal' \
142                  'http://localhost:19531/entries?boot'
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144       Listen for core dumps:
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146           curl 'http://localhost:19531/entries?follow&MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1'
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NOTES

154        1. Journal JSON Format
155           https://www.freedesktop.org/wiki/Software/systemd/json
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157        2. Server-Sent Events
158           https://developer.mozilla.org/en-US/docs/Server-sent_events/Using_server-sent_events
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160        3. Journal Export Format
161           https://www.freedesktop.org/wiki/Software/systemd/export
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165systemd 245                                SYSTEMD-JOURNAL-GATEWAYD.SERVICE(8)