lxc default provider does not populate dnsmasq.leases

[JeanMertz]

I have this in one of my cookbooks:

lxc 'worker' do
  template 'ubuntu'
end

I can see the container being created using the ubuntu template. Chef finishes, but when looking at the server, I noticed that it's actually pretty hard to find out the internal IP of the new container.

This is what I see after connecting:

$ lxc-list
STOPPED
  worker

$ lxc-start -n worker -d

$ lxc-list
RUNNING
  worker

$ cat /var/lib/misc/dnsmasq.leases
# empty

$ lxc-console -n worker
# I can correctly log in

$ cat /etc/dnsmasq.d/lxc
# Tell any system-wide dnsmasq instance to make sure to bind to interfaces
# instead of listening on 0.0.0.0
# WARNING: changes to this file will get lost if lxc is removed.
bind-interfaces
except-interface=lxcbr0

$ cat /etc/default/lxc
LXC_AUTO=true
USE_LXC_BRIDGE=true
LXC_BRIDGE="lxcbr0"
LXC_ADDR="10.0.3.1"
LXC_NETMASK="255.255.255.0"
LXC_NETWORK="10.0.3.0/24"
LXC_DHCP_RANGE="10.0.3.2,10.0.3.254"
LXC_DHCP_MAX="253"
LXC_SHUTDOWN_TIMEOUT=120
MIRROR="http://archive.ubuntu.com/ubuntu"

$ ssh ubuntu@10.0.3.1
Permission denied (publickey).
# I can connect (but denied due to ssh restrictions)

$ ssh ubuntu@10.0.3.2
ssh: connect to host 10.0.3.2 port 22: No route to host
# I'm not sure about this last one. The DHCP range starts at *.2,
# but the NETWORK range also includes *.1, but this could possibly be the DCHP router or something.

The problem with this is that I need to find out how to get the IP of the container, so I can pass it along to our Jenkins CI server to work with. Any thoughts?

Here's my run_list:

run_list *%w[
  role[base]                # build-essentials, git, etc…
  recipe[jenkins::node_ssh] # jenkins-slave
  recipe[lxc]               # this cookbook, default action
  recipe[jenkins-slave]     # lxc 'worker' with template 'ubuntu'
]

And this is the only (relevant) overridden attribute:

override_attributes(lxc: { allowed_types: %w[ubuntu] })

NOTE: I am using the new-develop branch

[chrisroberts]

Quick way to grab IP address:

sudo ruby -r'elecksee/lxc' -e 'puts Lxc.new("CONTAINER_NAME").container_ip'