[announce] vps-lxc; comprehensive tool for working with LXC containers

available...
http://aur.archlinux.org/packages.php?ID=34507
this is going to be brief, more later. for some time i have been developing a comprehensive solution for working with LXC based VPS containers on my Arch servers. it is about 95% complete, and ready for testing by others.
this system will allow you to build template containers for _any_ distribution if it has bootstrap type utilities (i have only implemented Arch based containers, Ubuntu and Debian will be done soon, with Fedora, maybe Opensuse, maybe others can create these?). once the templates are created, they can be "forked" into usable domains, and the LXC config (for the lxc-* user tools) can bee 100% generated from command line options to "vps-lxc mkdom".
the code is very consistent and clean, and can easily be extended by writing/implementing your own subcommand files. there is a command.proto file to get you started, and the "vps-lxc proto" command will show you the example command.
there is proper bash completion for most subcommands, mktpl and mkdom the exceptions for now (they have several options and i want the completion for those to be awesome). BTRFS will be used for efficient template/domain creation if available.
see here for more details:
http://www.mail-archive.com/lxc-users@l … 00148.html
try it out if your interested in LXC, i'm using it now and its working pretty nice. ls, init, and edit subcommands will be up soon.
here is an example of output, and do this to get started. the system is well commented, and the usage/exception strings should guide you:
cr@ph1 ~ $ vps-lxc help
Usage: vps-lxc COMMAND [help|OPTION]...
Create, destroy, interact with, and manage LXC based Virtual Private Server
(VPS/container) domains and templates.
Creation/destruction COMMANDs:
mktpl create a new template from scratch or based off an existing template
mkdom create a new domain based off a pre-created template
rmtpl remove a created template
rmdom remove a defined/created, STOPPED domain and it's configuration
Definition/edit COMMANDs:
define initialize a domain after editing it's configuration (once)
edit edit the persistent configuration of a VPS (requires reboot)
Control/interaction COMMANDs:
start send a STOPPED domain a signal to start
stop send a RUNNING domain a signal to stop
reboot send a RUNNING domain a signal to reboot
enter enter a domain and interact via console (limited, config specific)
Query COMMANDs:
help what you are seeing right now
tree view the VPS system's directories/files in a tree
ls list each domain and/or template and their status
cr@ph1 ~ $ vps-lxc mktpl help
Usage: vps-lxc mktpl (-b BASE | -d DISTRO -a ARCH)
[-p PROFILE] [-m MIRROR] TARGET
Generate a VPS template using bootstrap utilities to build it from scratch, or
base it off an existing template and add/modify packages/configuration
Options:
-b specifies the template used as a base for this one;
arch and distribution will be ignored if provided
-d the distribution to build
-a target architecture
-p distribution specific profile; default if not provided
-m the mirror to use for download; overrides internal
Arguments:
BASE name of an existing template
DISTRO an existing folder in include/mktpl
ARCH either 32 or 64
PROFILE an existing folder in include/mktpl/DISTRO
MIRROR distribution specific mirror to use in the
form http://...
Parameters:
TARGET the name of the template to be created
Options not defined can/may be set by the selected profile
cr@ph1 ~ $ vps-lxc mkdom help
Usage: vps-lxc mkdom -b BASE [-p PROFILE] [-h HOSTNAME] [-t TTY] [-s DEVPTS]
[-n type=TYPE,flags=FLAGS,link=LINK,name=NAME,hwaddr=HWADDR,ipv4=IPV4,ipv6=IPV6]...
[-c subsys.param=VALUE]... TARGET
Generate a VPS domain using an existing template as a base. The resultant domain
configuration is altered according to the selected profile and any options passed
Options:
-b specifies the template used as a base for this domain
-p the profile to use; default if not provided
-h the hostname assigned to this domain; defaults to NAME
if not provided
-t number of ttys to allocate to this domain
-s use a private devpts instance if possible, and restrict
ptys to this number; not implemented upstream
-n append a network interface to this domain in addition
to any defined by the profile
-c append cgroup subsystem values to this domain in
addition to any defined by the profile
Arguments:
BASE name of an existing template
PROFILE an existing folder in include/mkdom
HOSTNAME a valid hostname; default TARGET
TTY positive integer; default 2
DEVPTS positive integer; default 1024
TYPE empty, veth, macvlan, or phys
FLAGS up; or do not specify
LINK an existing interface on the host
NAME the interface name assigned internally
to the container
HWADDR a valid MAC address; do not specify
for dynamic
IPV4 a valid IPV4 address in the form
x.y.z.t/m, eg. 192.168.1.123/24
IPV6 a valid IPV6 address in the form x::y/m,
eg. 2003:db8:1:0:214:1234:fe0b:3596/64
VALUE set VALUE to the specified cgroup subsystem
parameter, e.g devices.deny=a; if VALUE has
spaces, quotes are needed
Parameters:
TARGET the name of the domain to be created
Options not defined can/may be set by the selected profile
Last edited by extofme (2010-02-20 00:50:48)

starfry wrote:
Hello extofme, have you done any more work on your scripts? Is there any later information available than what is in this thread?
I'm interested in setting up an Arch host with Arch/Ubuntu LXC containers.
I am moving away from a hardy host with openvz hardy containers.
Cheers.
unfortunately i have not done much work on these for several months, as i have since moved myself and my clients to the google appengine. however, i do follow the lxc list and devel, and they should still work ok (possibly some minor tweaking).
the scripts are very easy to work with, and are modular; you can extend what you need. they provide stacktraces and basic exception handling.
i do intend to work with lxc soon, and will pick vps-lxc back up then. feel free to run with it; send me patches if you find problems. if you have issues w/vps-lxc or lxc itself just report here and i will guide you. i was hoping others would find it useful and share some of the workload, meh :-)
C Anthony

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