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import yaml
import netaddr
import os
import log as logging
LOG = logging.getLogger("net-recover")
config_path = os.path.join(os.path.dirname(__file__), "network.cfg")
def setup_bondings(bond_mappings):
print bond_mappings
def add_ovs_port(ovs_br, ifname, uplink, vlan_id=None):
LOG.info("add_ovs_port enter")
cmd = "ovs-vsctl --may-exist add-port %s %s" % (ovs_br, ifname)
if vlan_id:
cmd += " tag=%s" % vlan_id
cmd += " -- set Interface %s type=internal;" % ifname
cmd += "ip link set dev %s address `ip link show %s |awk '/link\/ether/{print $2}'`;" \
% (ifname, uplink)
cmd += "ip link set %s up;" % ifname
LOG.info("add_ovs_port: cmd=%s" % cmd)
os.system(cmd)
def setup_ips(ip_settings, sys_intf_mappings):
LOG.info("setup_ips enter")
for intf_info in ip_settings.values():
network = netaddr.IPNetwork(intf_info["cidr"])
if sys_intf_mappings[intf_info["name"]]["type"] == "ovs":
intf_name = intf_info["name"]
else:
intf_name = intf_info["alias"]
if "gw" in intf_info:
cmd = "ip addr add %s/%s brd %s dev %s;" \
% (intf_info["ip"], intf_info["netmask"], str(network.broadcast),intf_name)
cmd += "route del default;"
cmd += "ip route add default via %s dev %s" % (intf_info["gw"], intf_name)
LOG.info("setup_ips: cmd=%s" % cmd)
os.system(cmd)
def setup_intfs(sys_intf_mappings, uplink_map):
LOG.info("setup_intfs enter")
for intf_name, intf_info in sys_intf_mappings.items():
if intf_info["type"] == "ovs":
add_ovs_port(
intf_info["interface"],
intf_name,
uplink_map[intf_info["interface"]],
vlan_id=intf_info.get("vlan_tag"))
else:
pass
def main(config):
uplink_map = {}
setup_bondings(config["bond_mappings"])
for provider_net in config["provider_net_mappings"]:
uplink_map[provider_net['name']] = provider_net['interface']
setup_intfs(config["sys_intf_mappings"], uplink_map)
setup_ips(config["ip_settings"], config["sys_intf_mappings"])
if __name__ == "__main__":
os.system("service openvswitch-switch status|| service openvswitch-switch start")
config = yaml.load(open(config_path))
main(config)
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