def test_get_unique_lxc_network(self, mock_check_output):
mock_check_output.return_value = ""
s = get_unique_lxc_network()
self.assertEqual(s, "10.0.6.0/24")
mock_check_output.side_effect = ['1', '']
s = get_unique_lxc_network()
self.assertEqual(s, "10.0.7.0/24")
mock_check_output.side_effect = ['1', '2', '3', '']
s = get_unique_lxc_network()
self.assertEqual(s, "10.0.9.0/24")
def write_lxc_net_config(self):
"""Finds and configures a new subnet for the host container,
to avoid overlapping with IPs used for Neutron.
"""
lxc_net_template = utils.load_template('lxc-net')
lxc_net_container_filename = os.path.join(self.container_abspath,
'rootfs/etc/default/lxc-net')
network = netutils.get_unique_lxc_network()
self.config.setopt('lxc_network', network)
nw = IPv4Network(network)
addr = nw[1]
netmask = nw.with_netmask.split('/')[-1]
net_low, net_high = netutils.ip_range_max(nw, [addr])
dhcp_range = "{},{}".format(net_low, net_high)
render_parts = dict(addr=addr,
netmask=netmask,
network=network,
dhcp_range=dhcp_range)
lxc_net = lxc_net_template.render(render_parts)
name = self.container_name
log.info("Writing lxc-net config for {}".format(name))
utils.spew(lxc_net_container_filename, lxc_net)
return network
def write_lxc_net_config(self):
"""Finds and configures a new subnet for the host container,
to avoid overlapping with IPs used for Neutron.
"""
lxc_net_template = utils.load_template('lxc-net')
lxc_net_container_filename = os.path.join(
self.container_abspath, 'rootfs/etc/default/lxc-net')
network = netutils.get_unique_lxc_network()
self.config.setopt('lxc_network', network)
nw = IPv4Network(network)
addr = nw[1]
netmask = nw.with_netmask.split('/')[-1]
net_low, net_high = netutils.ip_range_max(nw, [addr])
dhcp_range = "{},{}".format(net_low, net_high)
render_parts = dict(addr=addr,
netmask=netmask,
network=network,
dhcp_range=dhcp_range)
lxc_net = lxc_net_template.render(render_parts)
name = self.container_name
log.info("Writing lxc-net config for {}".format(name))
utils.spew(lxc_net_container_filename, lxc_net)
return network