I'm attempting to create multiple VMs using "none" for hostname, which appears
to be supported from comments in the sample association file.


    globus@syracuse:~$ cat
/usr/local/globus-4.0.5/etc/workspace_service/associations/lesbos | grep
hostname
    # If hostname is 'none' it is not assigned.

    globus@syracuse:~$ tail -1
/usr/local/globus-4.0.5/etc/workspace_service/associations/lesbos
    none 192.168.15.181 192.168.15.1 192.168.15.255 255.255.255.0
    globus@syracuse:~$ tail -1
/usr/local/globus-4.0.5/etc/workspace_service/associations/sicily 
    none 192.168.15.171 192.168.15.1 192.168.15.255 255.255.255.0


But this fails:


root@greece:/opt/workspace-TP1.3.0# tail -30
logs/Dec-18-2007-15:07:13-workspace-28-create
  subnetmask: 255.255.255.0
     gateway: 192.168.15.1
    hostname: None
        dns1: none
        dns2: none
CMD: bash /opt/workspace-TP1.3.0/bin/ebtables-config.sh add workspace-28-1
vif0.0 AA:01:7C:FE:03:57 192.168.15.171
  subcommand: add
     vifname: workspace-28-1
      dhcpif: vif0.0
     macaddr: AA:01:7C:FE:03:57
      ipaddr: 192.168.15.171
Chain DHCP-vif0.0 already exists.
Created workspace-28-1 chain
Added workspace-28-1 FORWARD rule
ebtables addition succeeded
CMD: /etc/init.d/dhcp stop
Stopping DHCP server: dhcp.
CMD: python /opt/workspace-TP1.3.0/bin/dhcp-conf-alter.py -a -i 192.168.15.171
-m AA:01:7C:FE:03:57 -n None -p /etc/dhcpd.conf -b 192.168.15.255 -s
255.255.255.0 -g 192.168.15.1
ERROR: Problem:
Traceback (most recent call last):
  File "/opt/workspace-TP1.3.0/bin/dhcp-conf-alter.py", line 629, in run
    add(opts, conf)
  File "/opt/workspace-TP1.3.0/bin/dhcp-conf-alter.py", line 154, in add
    conf.add(entry)
  File "/opt/workspace-TP1.3.0/bin/dhcp-conf-alter.py", line 83, in add
    raise Exception("hostname %s already present" % entry.hostname + ",
allhosts %s" % self.all_hosts)
Exception: hostname None already present, allhosts {'192.168.15.181':
<__main__.DHCPConfEntry instance at 0x821eaec>}
ERROR: dhcp policy addition failed
CMD: /etc/init.d/dhcp start
Starting DHCP server: dhcpd failed to start - check syslog for diagnostics.


This check in "dhcp-conf-alter.py" is missed, since hostname is the string
"None" when specified on the command-line by the WS layer:

    393         if not opts.hostname:
    394             raise InvalidInput("Add requires a hostname, see help
(-h).")
    395         else:
    396             log.debug("    hostname = %s" % opts.hostname)


Obviously the intent was to not handle "None", but the first VM will deploy.

The web services layer shouldn't pass this "-n None", it should leave it
unspecified and allow the backend to perform it's check and bubble up the error
information.