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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT VARIABLES | EXAMPLES | SEE ALSO | COLOPHON |
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SYSTEMD-SOCKET-ACTIVATE(1) systemd-socket-activateSYSTEMD-SOCKET-ACTIVATE(1)
systemd-socket-activate - Test socket activation of daemons
systemd-socket-activate [OPTIONS...] daemon [OPTIONS...]
systemd-socket-activate may be used to launch a socket-activated
service binary from the command line for testing purposes. It may
also be used to launch individual instances of the service binary per
connection.
The daemon to launch and its options should be specified after
options intended for systemd-socket-activate.
If the --inetd option is given, the socket file descriptor will be
used as the standard input and output of the launched process.
Otherwise, standard input and output will be inherited, and sockets
will be passed through file descriptors 3 and higher. Sockets passed
through $LISTEN_FDS to systemd-socket-activate will be passed through
to the daemon, in the original positions. Other sockets specified
with --listen= will use consecutive descriptors. By default,
systemd-socket-activate listens on a stream socket, use --datagram
and --seqpacket to listen on datagram or sequential packet sockets
instead (see below).
-l address, --listen=address
Listen on this address. Takes a string like "2000" or
"127.0.0.1:2001".
-a, --accept
Launch an instance of the service binary for each connection and
pass the connection socket.
-d, --datagram
Listen on a datagram socket (SOCK_DGRAM), instead of a stream
socket (SOCK_STREAM). May not be combined with --seqpacket.
--seqpacket
Listen on a sequential packet socket (SOCK_SEQPACKET), instead of
a stream socket (SOCK_STREAM). May not be combined with
--datagram.
--inetd
Use the inetd protocol for passing file descriptors, i.e. as
standard input and standard output, instead of the new-style
protocol for passing file descriptors using $LISTEN_FDS (see
above).
-E VAR[=VALUE], --setenv=VAR[=VALUE]
Add this variable to the environment of the launched process. If
VAR is followed by "=", assume that it is a variable–value pair.
Otherwise, obtain the value from the environment of
systemd-socket-activate itself.
--fdname=NAME[:NAME...]
Specify names for the file descriptors passed. This is equivalent
to setting FileDescriptorName= in socket unit files, and enables
use of sd_listen_fds_with_names(3). Multiple entries may be
specifies using separate options or by separating names with
colons (":") in one option. In case more names are given than
descriptors, superfluous ones will be ignored. In case less names
are given than descriptors, the remaining file descriptors will
be unnamed.
-h, --help
Print a short help text and exit.
--version
Print a short version string and exit.
$LISTEN_FDS, $LISTEN_PID, $LISTEN_FDNAMES
See sd_listen_fds(3).
$SYSTEMD_LOG_TARGET, $SYSTEMD_LOG_LEVEL, $SYSTEMD_LOG_COLOR,
$SYSTEMD_LOG_LOCATION
Same as in systemd(1).
Example 1. Run an echo server on port 2000
$ systemd-socket-activate -l 2000 --inetd -a cat
Example 2. Run a socket-activated instance of systemd-journal-
gatewayd(8)
$ systemd-socket-activate -l 19531 /usr/lib/systemd/systemd-journal-gatewayd
systemd(1), systemd.socket(5), systemd.service(5), sd_listen_fds(3),
sd_listen_fds_with_names(3), cat(1)
This page is part of the systemd (systemd system and service manager)
project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a bug
report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩. This
page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2018-02-02. (At that
time, the date of the most recent commit that was found in the repos‐
itory was 2018-02-02.) If you discover any rendering problems in
this HTML version of the page, or you believe there is a better or
more up-to-date source for the page, or you have corrections or
improvements to the information in this COLOPHON (which is not part
of the original manual page), send a mail to man-pages@man7.org
systemd 234 SYSTEMD-SOCKET-ACTIVATE(1)
Pages that refer to this page: systemd.directives(7), systemd.index(7)
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