lxc-create(1) — Linux manual page


lxc-create(1)                                              lxc-create(1)

NAME         top

       lxc-create - creates a container

SYNOPSIS         top

       lxc-create {-n name} [-f config_file] {-t template} [-B
                  backingstore] [-- template-options]

DESCRIPTION         top

       lxc-create creates a system object where is stored the
       configuration information and where can be stored user
       information. The identifier name is used to specify the container
       to be used with the different lxc commands.

       The object is a directory created in /var/lib/lxc and identified
       by its name.

       The object is the definition of the different resources an
       application can use or can see. The more the configuration file
       contains information, the more the container is isolated and the
       more the application is jailed.

       If the configuration file config_file is not specified, the
       container will be created with the default isolation: processes,
       sysv ipc and mount points.

OPTIONS         top

       -f, --config config_file
              Specify the configuration file to configure the
              virtualization and isolation functionalities for the

       -t, --template template
              'template' is the short name of an existing 'lxc-template'
              script that is called by lxc-create, eg. busybox, debian,
              fedora, ubuntu or sshd.  Refer to the examples in
              /usr/share/lxc/templates for details of the expected
              script structure.  Alternatively, the full path to an
              executable template script can also be passed as a
              parameter.  "none" can be used to force lxc-create to skip
              rootfs creation.

       -B, --bdev backingstore
              'backingstore' is one of 'dir', 'lvm', 'loop', 'btrfs',
              'zfs', 'rbd', or 'best'. The default is 'dir', meaning
              that the container root filesystem will be a directory
              under /var/lib/lxc/container/rootfs.  This backing store
              type allows the optional --dir ROOTFS to be specified,
              meaning that the container rootfs should be placed under
              the specified path, rather than the default. (The 'none'
              backingstore type is an alias for 'dir'.) If 'btrfs' is
              specified, then the target filesystem must be btrfs, and
              the container rootfs will be created as a new subvolume.
              This allows snapshotted clones to be created, but also
              causes rsync --one-filesystem to treat it as a separate
              filesystem.  If backingstore is 'lvm', then an lvm block
              device will be used and the following further options are
              available: --lvname lvname1 will create an LV named
              lvname1 rather than the default, which is the container
              name. --vgname vgname1 will create the LV in volume group
              vgname1 rather than the default, lxc.  --thinpool
              thinpool1 will create the LV as a thin-provisioned volume
              in the pool named thinpool1 rather than the default, lxc.
              --fstype FSTYPE will create an FSTYPE filesystem on the
              LV, rather than the default, which is ext4.  --fssize SIZE
              will create a LV (and filesystem) of size SIZE rather than
              the default, which is 1G.

              If backingstore is 'loop', you can use --fstype FSTYPE and
              --fssize SIZE as 'lvm'. The default values for these
              options are the same as 'lvm'.

              If backingstore is 'rbd', then you will need to have a
              valid configuration in ceph.conf and a
              ceph.client.admin.keyring defined.  You can specify the
              following options : --rbdname RBDNAME will create a
              blockdevice named RBDNAME rather than the default, which
              is the container name.  --rbdpool POOL will create the
              blockdevice in the pool named POOL, rather than the
              default, which is 'lxc'.

              If backingstore is 'best', then lxc will try, in order,
              btrfs, zfs, lvm, and finally a directory backing store.

       -- template-options
              This will pass template-options to the template as
              arguments. To see the list of options supported by the
              template, you can run lxc-create -t TEMPLATE -h.

COMMON OPTIONS         top

       These options are common to most of lxc commands.

       -?, -h, --help
              Print a longer usage message than normal.

              Give the usage message

       -q, --quiet
              mute on

       -P, --lxcpath=PATH
              Use an alternate container path. The default is

       -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, ALERT, CRIT, WARN,

              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.

              Specify the configuration file to configure the
              virtualization and isolation functionalities for the

              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).

              Show the version number.

DIAGNOSTIC         top

       The container already exists
              As the message mention it, you try to create a container
              but there is a container with the same name. You can use
              the lxc-ls command to list the available containers on the

SEE ALSO         top

       lxc(7), lxc-create(1), lxc-copy(1), lxc-destroy(1), lxc-start(1),
       lxc-stop(1), lxc-execute(1), lxc-console(1), lxc-monitor(1),
       lxc-wait(1), lxc-cgroup(1), lxc-ls(1), lxc-info(1),
       lxc-freeze(1), lxc-unfreeze(1), lxc-attach(1), lxc.conf(5)

AUTHOR         top

       Daniel Lezcano <daniel.lezcano@free.fr>

COLOPHON         top

       This page is part of the lxc (Linux containers) project.
       Information about the project can be found at 
       ⟨http://linuxcontainers.org/⟩.  If you have a bug report for this
       manual page, send it to lxc-devel@lists.linuxcontainers.org.
       This page was obtained from the project's upstream Git repository
       ⟨https://github.com/lxc/lxc.git⟩ on 2023-12-22.  (At that time,
       the date of the most recent commit that was found in the
       repository was 2023-12-18.)  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

                               2022-06-16                  lxc-create(1)

Pages that refer to this page: lxc-attach(1)lxc-autostart(1)lxc-cgroup(1)lxc-checkconfig(1)lxc-checkpoint(1)lxc-config(1)lxc-console(1)lxc-copy(1)lxc-create(1)lxc-destroy(1)lxc-device(1)lxc-execute(1)lxc-freeze(1)lxc-info(1)lxc-ls(1)lxc-monitor(1)lxc-snapshot(1)lxc-start(1)lxc-stop(1)lxc-top(1)lxc-unfreeze(1)lxc-unshare(1)lxc-update-config(1)lxc-usernsexec(1)lxc-wait(1)lxc.container.conf(5)lxc.system.conf(5)lxc(7)