create CentOS7 containers under Ubuntu 14.04 host

Here's how to create CentOS7 containers under Ubuntu 14.04 LXC host.

# apt-get install lxc lxc-templates yum

create a CentOS7 container.

root@ubuntu:~# /usr/share/lxc/templates/lxc-centos -n centos7-01 --release=7

change root password of the container.

root@ubuntu:~# chroot /var/lib/lxc/centos7-01/rootfs passwd Changing password for user root. New password: BAD PASSWORD: The password is shorter than 8 characters Retype new password: passwd: all authentication tokens updated successfully.

run the container.

root@ubuntu:~# lxc-start -n centos7-01 -d

access to the container.

root@ubuntu:~# lxc-attach -n centos7-01 [root@centos7-01 ~]# cat /etc/centos-release CentOS Linux release 7.2.1511 (Core) [root@centos7-01 ~]# uname -ri 3.19.0-49-generic x86_64 [root@centos7-01 ~]# exit root@ubuntu:~#

I can not create a CentOS7 container with lxc-create.

lxc-create does not seem to pass ‘--release’ options.

root@ubuntu:~# lxc-create -t centos --release=7 -n centos7-02 lxc-create: unrecognized option '--release=7' Usage: lxc-create --name=NAME -t template [-w] [-r] [-P lxcpath] lxc-create creates a container Options :  -n, --name=NAME    NAME of the container  -f, --config=file  Initial configuration file  -t, --template=t   Template to use to setup container