LXC deploy and config management tool
“Iori” is means a simple hut. It is written “庵” in Kanji, this caracter is 0x5EB5 in Unicode.
Iori is a command line tool for deploying and config management tool of Linux Containers (LXC). When you use LXC, you need to use LXC userland command line tool as start with “lxc-*” generally. LXC is provided template config file and scripts. But this way if you want to manage from a remote contoller host is difficult to treat containers by bulk. So this tool controls LXC with libvirt API, and manages these config files with Git repository.
This tool is enable to manage LXC container’s multi hosts. It is that one branch is managed as one host. Branch name is generated from hostname(or FQDN) or IPv4 or IPv6 address. ‘master’ branch will be using for mapping. ‘template’ branch is used for template of each node.
- Python 2.7
- python-libvirt (0.9.12)
- GitPython (0.3.2-rc1)
- cdebootstrap (not test of debootstrap)
You do not need to install lxc package. :)
Mount cgroup file system
Mount cgroup filesystem firstly. Append next one line to /etc/fstab, execute “sudo mount -a.”:
cgroup /sys/fs/cgroup cgroup defaults 0 0
If you use Debian GNU/Linux Wheezy/Sid, set up below option to /etc/default/grub, then execute “sudo update-grub2 && sudo shutdown -r now”.:
Ubuntu 12.04 is unnecessary to setup this option.
Install Debian packages that Iori depends on
Iori depends on GitPython, python-libvirt and libvirt, and Python2.7. Install these packages.:
$ sudo apt-get install python-git libvirt-bin python-libvirt
Install that choosing with one of three ways.
$ git clone https://github.com/mkouhei/iori.git $ cd iori $ sudo python setup.py install
$ pip install iori
Not yet official package, then download python-iori-x.x_all.deb from https://github.com/mkouhei/iori/downloads and install with dpkg command.:
$ wget https://github.com/mkouhei/iori/download/python-iori_x.x-x_all.deb $ sudo dpkg -i python-iori_x.x-x_all.deb
Add a user account to libvirt(libvirtd) group
Add a user account for using iori to libvirt or libvirtd group.:
$ sudo adduser <youraccount> libvirt
libvirt is for Debian, libvirtd is for Ubuntu.
If directory “/var/lib/lxc” is not existed, make it.:
$ sudo mkdir /var/lib/lxc
Quick start guide
Create $HOME/.iori directory and initialize Git repository.
$ iori newrepo
Add LXC host node to Git repository
Make branch of named hostname of LXC host node, checktout it.:
$ iori addnode -n localhost
Define libvirt XML file and create rootfs image
Generate XML file of libvirt domain, and define domain from this xml, create rootfs image with debootstrap command. Then save XML file of that domain.:
$ iori deploy -n localhost -c testcont01 --rootfs /var/lib/lxc/testcont01
Start container from above domain.:
$ iori start -n localhost -c testcont01
You copy pre-commit hook scripts after git clone.:
$ cp -f utils/pre-commit.txt .git/hooks/pre-commit
Next install python 2.7 later and nosetests, libvirt, python-libvirt, GitPython, cdebootstrap. Below way is for Debian GNU/Linux Sid system.:
$ sudo apt-get install python python-libvirt python-git python-nose
Then checkout ‘devel’ branch for development, commit your changes. Before pull request, execute git rebase.
- lxc Linux Containers
- libvirt The virtualization API
- ElementTree XML API
- Appendix D. Random Bits - D.3. Installing Debian GNU/Linux from a Unix/Linux System
See also these documents.
- Support remote host target with debootstrap
- Detect to register same host when adding node
- Adding unittest