NAME¶
lxc-execute - run an application inside a container.
SYNOPSIS¶
lxc-execute -n name [-f config_file] [-s KEY=VAL
] [--] command
DESCRIPTION¶
lxc-execute runs the specified
command inside the container
specified by
name.
It will setup the container according to the configuration previously defined
with the lxc-create command or with the configuration file parameter. If no
configuration is defined, the default isolation is used.
This command is mainly used when you want to quickly launch an application in an
isolated environment.
lxc-execute command will run the specified command into the container via
an intermediate process,
lxc-init. This lxc-init after launching the
specified command, will wait for its end and all other reparented processes.
(that allows to support daemons in the container). In other words, in the
container,
lxc-init has the pid 1 and the first process of the
application has the pid 2.
The above
lxc-init is designed to forward received signals to the started
command. So
lxc-kill (1) sent signal is received by the user specified
command (pid 2 in the container).
OPTIONS¶
- -f, --rcfile config_file
- Specify the configuration file to configure the
virtualization and isolation functionalities for the container.
This configuration file if present will be used even if there is already a
configuration file present in the previously created container (via
lxc-create).
- -s, --define KEY=VAL
- Assign value VAL to configuration variable
KEY. This overrides any assignment done in config_file.
- --
- Signal the end of options and disables further option
processing. Any arguments after the -- are treated as arguments.
This option is useful when you want to execute, with the command
lxc-execute, a command line with its own options.
COMMON OPTIONS¶
These options are common to most of lxc commands.
- -?, -h, --help
- Print a longer usage message than normal.
- --usage
- Give the usage message
- -q, --quiet
- mute on
- -o, --logfile=FILE
- Output to an alternate log FILE. The default is no
log.
- -l, --logpriority=LEVEL
- Set log priority to LEVEL. The default log priority
is ERROR. Possible values are : FATAL, CRIT, WARN, ERROR, NOTICE, INFO,
DEBUG.
Note that this option is setting the priority of the events log in the
alternate log file. It do not have effect on the ERROR events log on
stderr.
- -n, --name=NAME
- Use container identifier NAME. The container
identifier format is an alphanumeric string.
DIAGNOSTIC¶
- The container is busy
- The specified container is already running an application.
You should stop it before reuse this container or create a new one.
SEE ALSO¶
lxc(1),
lxc-create(1),
lxc-destroy(1),
lxc-start(1),
lxc-stop(1),
lxc-execute(1),
lxc-kill(1),
lxc-console(1),
lxc-monitor(1),
lxc-wait(1),
lxc-cgroup(1),
lxc-ls(1),
lxc-ps(1),
lxc-info(1),
lxc-freeze(1),
lxc-unfreeze(1),
lxc-attach(1),
lxc.conf(5)
AUTHOR¶
Daniel Lezcano <daniel.lezcano@free.fr>
