Diff for "Running/LXC"

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⇤ ← Revision 24 as of 2011-06-22 06:56:43 →
Size: 4297
Editor: lifeless
Comment: bind mounts
← Revision 113 as of 2021-12-10 15:20:27 → ⇥
Size: 0
Editor: cjwatson
Comment: use LXD instead; see https://launchpad.readthedocs.io/en/latest/running.html
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## page was copied from Running/VirtualMachine
This page explains how to set up and run Launchpad (for development) inside a LXC.

= Why? =

Launchpad development setup makes significant changes to your machine; its nice to be unaffected by those except when you are actually doing such development.

Also, launchpad has some limitations on concurrent testing per-machine and so forth - multiple container's can be used to work around this.


= Make a LXC =

 1. Install lxc

{{{
sudo apt-get install lxc
}}}

 1. Work around Bug:800456
{{{
sudo apt-get install cgroup-bin
}}}

 1. Work around Bug:784093

{{{
sudo dd of=/etc/cgconfig.conf << EOF
mount {
 cpu = /sys/fs//cgroup/cpu;
 cpuacct = /sys/fs/cgroup/cpu;
 devices = /sys/fs/cgroup/cpu;
 memory = /sys/fs/cgroup/cpu;
}
EOF
sudo service cgconfig restart
}}}

 1. Work around Bug:798476 (optional if you run i386 or have a -tonne- of memory and don't care about 64-bit footprint.
    Grab the patch from the bug and apply it to /usr/lib/lxc/templates/lxc-lucid. If you're running i386 already or want a 64-bit lxc then do not pass arch= on the lxc-create command line.

 1. Create a config for your containers
{{{
sudo dd of=/etc/lxc/local.conf << EOF
lxc.network.type=veth
lxc.network.link=virbr0
lxc.network.flags=up
EOF
}}}

 1. Create a container
{{{
sudo arch=i386 lxc-create -n lucid-test-lp -t lucid -f /etc/lxc/local.conf
}}}
    If you want to use a proxy
{{{
sudo arch=i386 http_proxy=http://host:port/ lxc-create -n lucid-test-lp -t lucid -f /etc/lxc/local.conf
}}}
    And if you want to set a custom mirror, similar to http_proxy, but set MIRROR= instead.

 1. Start it
{{{
sudo lxc-start -n lucid-test-lp
}}}
    Ignore the warning about openssh crashing - it restarts on a later event.
    The initial credentials are root:root.

 1. The new container won't have your proxy / mirror settings preserved. Customise it at this point before going further if you care about this.

 1. Grab your user id and username so you can setup a bind mount outside the container:
{{{
id -u
id -nu
}}}

 1. Inside the container add the user:
{{{
adduser --uid $id $username
}}}

 1. To stop it now run 'poweroff -n'.

 1. Setup a bind mount so you can access your home dir (and thus your LP source code) from within the lxc container:
    * edit /var/lib/lxc/lucid-test-lp/fstab
    * Add a line:
{{{
/home/$username /var/lib/lxc/lucid-test-lp/rootfs/home/$username none bind 0 0
}}}
 

 1. below this is not yet updated from the vm instructions

 1. After its installed, connect to the image and install {{{acpid}}} and {{{openssh-server}}}

 1. Use ssh-copy-id to copy your public key into the VM.

 1. ssh -A <vm IP address> to connect to the VM.

 1. {{{bzr whoami "Your Name <your.email@example.com>"}}} to set your bzr identity in the VM.

 1. You can now follow the [[Getting|getting-started]] on LP instructions.

= References =

See also this email thread about [[https://lists.launchpad.net/launchpad-dev/msg03456.html|running Launchpad in a virtual machine]], and this [[https://lists.launchpad.net/launchpad-dev/msg03454.html|discussion of the differences]] between running in a [[Running/Schroot|chroot]] environment and running a VM. [[Running/RemoteAccess]] has a discussion for how you can configure the VM to allow the host machine to access the web pages, etc.

= Alternatively =

You can skip some manual steps of installing from an ISO using a command like this:

{{{
sudo ubuntu-vm-builder kvm lucid --domain vm --dest ~/vm/lp-dev \
 --hostname lp-dev \
 --mem 2048 --cpus 2 \
 --components main,universe,multiverse,restricted \
 --mirror http://10.113.3.35:3142/mirror.internode.on.net/pub/ubuntu/ubuntu \
 --libvirt qemu:///system \
 --debug -v \
 --ssh-user-key ~/.ssh/id_rsa.pub --ssh-key ~/.ssh/id_rsa.pub \
 --rootsize 24000 \
 --user $USER
}}}

After installation completes, it should show up in your virt-manager menu.

= In LXC =

It seems like it would be nice to run Launchpad in [[http://lxc.teegra.net/|LXC containers]]: they should be more efficient than a VM (especially with regard to memory and disk) but more isolated than a chroot. More testing or documentation is needed.