Perl script for Linux Containers creation

Read the top of the script for full documentation and patch it for your personal use

Build cache OS

This uses debootstrap to install a base debian under /var/cache/lxc

# lxc-wizard --BUILD

** Container Creation Wizard **
Creating cache directory... OK
Creating download directory... OK
Downloading Debian minimal...
I: Retrieving Release
I: Retrieving Packages
I: Validating Packages
I: Resolving dependencies of required packages...
I: Resolving dependencies of base packages...
I: Found additional required dependencies: insserv libbz2-1.0 libdb4.8 libslang2 
I: Found additional base dependencies: adduser debian-archive-keyring gnupg gpgv libbsd0 libdb4.7 libedit2 l 
ibgdbm3 libgpm2 libgssapi-krb5-2 libk5crypto3 libkeyutils1 libkrb5-3 libkrb5support0 libncursesw5 libreadlin 
e6 libssl0.9.8 libusb-0.1-4 libwrap0 openssh-blacklist openssh-client perl perl-modules procps readline-comm 
on vim-common vim-runtime 
I: Checking component main on http://mirror.peer1.net/debian...
I: Retrieving libacl1
I: Validating libacl1
I: Retrieving adduser
I: Validating adduser
...
Setting up sgml-base (1.26+nmu1) ...
Setting up xml-core (0.13) ...
Processing triggers for python-support ...
OK

Update cached OS

Upgrades your debian fs under /var/cache/lxc

# lxc-wizard --REFRESH

** Container Creation Wizard **
Get:1 http://mirror.peer1.net squeeze Release.gpg [1672 B]
Get:2 http://mirror.peer1.net squeeze/updates Release.gpg [836 B]
Get:3 http://mirror.peer1.net wheezy Release.gpg [836 B]
Get:4 http://mirror.peer1.net wheezy/updates Release.gpg [836 B]
...
Fetched 9501 kB in 3s (2891 kB/s)
Reading package lists... Done
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
OK

Configure new container

# lxc-wizard --help

** Container Creation Wizard **
Usage: lxc-wizard [options]

    --fqdn DQDN         full qualified domain name of the target container
    --hostname HOST     hostname (if it can't be extracted from the fqdn)
    --domain DOMAIN     domain name (if it can't be extracted from the fqdn)
    --ipaddr IPADDR     ip address (if it can't be found by gethost call)
    --gwaddr IPADDR     gateway address
...


# lxc-wizard --fqdn coral.gene

** Container Creation Wizard **
Please enter the following information
default values in [], hit enter to accept

Container FQDN [coral.gene] : 
IP Address [10.5.2.2] : 
GW Address [10.5.0.1] : 
Container LXC Name [Coral] : 
Create Logical Volume [Y] : 
Logical Volume Group [bigfoot] : 
Logical Volume Name [Coral] : 
Logical Volume Size [32G] : 16G
Mount Point [/var/lib/lxc/Coral] : 
Container Memory Limit [8G] : 4G
Container Memory+Swap Limit [4G] : 
Container CPU Shares [1024] : 
Container IO Weight [1000] : 500
Install container OS [Y] : 
Set to autostart on boot [Y] : N
Start container when finished [Y] : 

Please verify all information:

Container Name:        Coral
Container FQDN:        coral.gene
Container IP:          10.5.2.2
Container GW:          10.5.0.1

Create Logical Volume: Y
Volume Group:          bigfoot
Volume Name:           Coral
Volume Size:           16G
Mount Point:           /var/lib/lxc/Coral

Memory Limit:          4G
Memory+Swap Limit:     4G
CPU Shares:            1024
IO Weight:             500

Set to start on boot:  N
Start after setup:     Y
Install OS:            Y

Is everything right [Y] : 

Creating Logical Volume...   Logical volume "Coral" created
OK
Creating Filesystem... mke2fs 1.41.12 (17-May-2010)
Filesystem label=Coral
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
1048576 inodes, 4194304 blocks
0 blocks (0.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
128 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks: 
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 
        4096000

Writing inode tables: done                            
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 26 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.
OK
Tuning Filesystem... tune2fs 1.41.12 (17-May-2010)
Setting maximal mount count to -1
Setting interval between checks to 0 seconds
OK
Creating Mount Point... OK
Mounting Filesystem... OK
Updating /etc/fstab... OK
Copying cached container template... OK
Starting container... Can't exec "lxc-start": No such file or directory at lxc-wizard line 316, <STDIN> line 17.
error!
Abort [A] or Continue [C]? C
Shit happened.

Comprehensive error management is implemented for your convenience.