systemd-journal-remote — Receive journal messages over the network
systemd-journal-remote [OPTIONS...] [-o/--output=
systemd-journal-remote is a command to
receive serialized journal events and store them to the journal.
Input streams are in the
Journal Export Format
i.e. like the output from
journalctl --output=export. For transport over
the network, this serialized stream is usually carried over an
Sources can be either "active" (systemd-journal-remote requests and pulls the data), or "passive" (systemd-journal-remote waits for a connection and then receives events pushed by the other side).
systemd-journal-remote can read more than one event stream at a time. They will be interleaved in the output file. In case of "active" connections, each "source" is one stream, and in case of "passive" connections, each connection can result in a separate stream. Sockets can be configured in "accept" mode (i.e. only one connection), or "listen" mode (i.e. multiple connections, each resulting in a stream).
When there are no more connections, and no more can be created (there are no listening sockets), then systemd-journal-remote will exit.
Active sources can be specified in the following ways:
- is given as a
positional argument, events will be read from standard input.
Other positional arguments will be treated as filenames
to open and read from.
events will be retrieved using HTTP from
ADDRESS. This URL should refer to the
root of a remote
instance (e.g. http://some.host:19531/ or
Passive sources can be specified in the following ways:
ADDRESS must be an
address suitable for
systemd-journal-remote will listen on this
socket for connections. Each connection is expected to be a
stream of journal events.
ADDRESS must be
either a negative integer, in which case it will be
interpreted as the (negated) file descriptor number, or an
address suitable for
In the first case, matching file descriptor must be inherited
In the second case, an HTTP or HTTPS server will be spawned on
this port, respectively for
--listen-https. Currently, only POST requests
/upload with "
application/vnd.fdo.journal" are supported.
protocol. Open sockets inherited through socket activation
behave like those opened with
described above, unless they are specified as an argument in
above. In the latter case, an HTTP or HTTPS server will be
spawned using this descriptor and connections must be made
over the HTTP protocol.
The location of the output journal can be specified
--output=. For "active"
sources, this option is required.
Will write to this journal file. The filename
must end with
.journal. The file will be
created if it does not exist. If necessary (journal file full,
or corrupted), the file will be renamed following normal
journald rules and a new journal file will be created in its
Will create journal files underneath directory
DIR. The directory must exist. If
necessary (journal files over size, or corrupted), journal
files will be rotated following normal journald rules. Names
of files underneath
DIR will be
generated using the rules described below.
--output= is not used, the output
/var/log/journal/remote/ will be
used. In case the output file is not specified, journal files
will be created underneath the selected directory. Files will be
hostname part is the
escaped hostname of the source endpoint of the connection, or the
numerical address if the hostname cannot be determined.
In case of "active" sources, the output file name must always be given explicitly.
The following options are understood:
host. For the first, only one output
journal file is used. For the latter, a separate output file
is used, based on the hostname of the other endpoint of a
In case of "active" sources, the output file name must
always be given explicitly and only
Compress or not, respectively, the data in the journal using XZ.
Periodically sign or not, respectively, the data in the journal using Forward Secure Sealing.
PROG --option1 --option2
Program to invoke to retrieve data. The journal event stream must be generated on standard output.
--getter='curl "-HAccept: application/vnd.fdo.journal" https://some.host:19531/'
--getter='wget --header="Accept: application/vnd.fdo.journal" -O- https://some.host:19531/'
Copy local journal events to a different journal directory:
journalctl -o export | systemd-journal-remote -o /tmp/dir -
Retrieve all available events from a remote
instance and store them in
systemd-journal-remote --url http://some.host:19531/
Retrieve current boot events and wait for new events from a remote
instance, and store them in
systemd-journal-remote --url http://some.host:19531/entries?boot&follow