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import os
import sys
import yaml

def exec_cmd(cmd):
    print cmd
    os.system(cmd)

def rename_nics(dha_info, rsa_file, compass_ip):
    for host in dha_info['hosts']:
        host_name = host['name']
        interfaces = host.get('interfaces')
        if interfaces:
            for interface in interfaces:
                nic_name = interface.keys()[0]
                mac = interface.values()[0]

                exec_cmd("ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
                          -i %s root@%s \
                          'cobbler system edit --name=%s --interface=%s --mac=%s'" \
                          % (rsa_file, compass_ip, host_name, nic_name, mac))

    exec_cmd("ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
              -i %s root@%s \
              'cobbler sync'" % (rsa_file, compass_ip))

if __name__ == "__main__":
    assert(len(sys.argv) == 4)
    rename_nics(yaml.load(open(sys.argv[1])), sys.argv[2], sys.argv[3])