NAME | SYNOPSIS | DESCRIPTION | The ``insert'' command | The ``remove'' command | EXIT STATUS | ENVIRONMENT | FILES | EXAMPLE | SEE ALSO | COLOPHON

ovs-ctl(8)                   Open vSwitch Manual                  ovs-ctl(8)

NAME         top

       ovs-kmod-ctl - OVS startup helper script for loading kernel modules

SYNOPSIS         top

       ovs-kmod-ctl insert
       ovs-kmod-ctl remove
       ovs-kmod-ctl help | -h | --help
       ovs-kmod-ctl --version
       ovs-kmod-ctl version

DESCRIPTION         top

       The ovs-kmod-ctl program is responsible for inserting and removing
       Open vSwitch kernel modules.  It is not meant to be invoked directly
       by system administrators but to be called internally by system
       startup scripts.  The script is used as part of an SELinux transition

       Each of ovs-kmod-ctl's commands is described separately below.

The ``insert'' command         top

       The insert command loads the Open vSwitch kernel modules, if needed.
       If this fails, and the Linux bridge module is loaded but no bridges
       exist, it tries to unload the bridge module and tries loading the
       Open vSwitch kernel module again.

The ``remove'' command         top

       The remove command unloads the Open vSwitch kernel module (including
       the bridge compatibility module, if loaded) and any associated vport

EXIT STATUS         top

       ovs-kmod-ctl exits with status 0 on success and nonzero on failure.
       The insert command is considered to succeed if kernel modules are
       already loaded; the remove command is considered to succeed if none
       of the kernel modules are loaded.

ENVIRONMENT         top

       The following environment variables affect ovs-kmod-ctl:

       PATH   ovs-kmod-ctl does not hardcode the location of any of the
              programs that it runs.  ovs-kmod-ctl will add the sbindir and
              bindir that were specified at configure time to PATH, if they
              are not already present.

              Setting one of these variables in the environment overrides
              the respective configure option, both for ovs-kmod-ctl itself
              and for the other Open vSwitch programs that it runs.

FILES         top

       ovs-kmod-ctl uses the following files:

              Shell function library used internally by ovs-kmod-ctl.  It
              must be installed in the same directory as ovs-kmod-ctl.

EXAMPLE         top

       ovs-kmod-ctl isn't intended to be manually executed.  However, the
       following examples demonstrate loading the kernel modules.

       ovs-kmod-ctl insert
              Attempts to insert the Open vSwitch kernel modules.

       ovs-kmod-ctl remove
              Attempts to remove the Open vSwitch kernel modules.

SEE ALSO         top

       README.rst, ovs-ctl(8)

COLOPHON         top

       This page is part of the Open vSwitch (a distributed virtual
       multilayer switch) project.  Information about the project can be
       found at ⟨⟩.  If you have a bug report for
       this manual page, send it to  This page was
       obtained from the project's upstream Git repository
       ⟨⟩ on 2020-02-08.  (At that
       time, the date of the most recent commit that was found in the repos‐
       itory was 2020-02-07.)  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

Open vSwitch                    February 2018                     ovs-ctl(8)