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lxc-create - Online in the Cloud

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This is the command lxc-create that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator



lxc-create - creates a container


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


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.


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

-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.


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 /var/lib/lxc.

-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 :

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

Show the version number.


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 system.

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