force_dhcp_release is currently unsupported on Fedora

[Dan Prince]

The implementation for the --force_dhcp_release currently fails on Fedora. When trying to use this flag I'm getting the following error in network.log:

(nova.rpc.amqp): TRACE: File "/usr/lib/python2.7/site-packages/nova/rpc/amqp.py", line 252, in _process_data
(nova.rpc.amqp): TRACE: rval = node_func(context=ctxt, **node_args)
(nova.rpc.amqp): TRACE: File "/usr/lib/python2.7/site-packages/nova/network/manager.py", line 260, in wrapped
(nova.rpc.amqp): TRACE: return func(self, context, *args, **kwargs)
(nova.rpc.amqp): TRACE: File "/usr/lib/python2.7/site-packages/nova/network/manager.py", line 374, in deallocate_for_instance
(nova.rpc.amqp): TRACE: super(FloatingIP, self).deallocate_for_instance(context, **kwargs)
(nova.rpc.amqp): TRACE: File "/usr/lib/python2.7/site-packages/nova/network/manager.py", line 260, in wrapped
(nova.rpc.amqp): TRACE: return func(self, context, *args, **kwargs)
(nova.rpc.amqp): TRACE: File "/usr/lib/python2.7/site-packages/nova/network/manager.py", line 929, in deallocate_for_instance
(nova.rpc.amqp): TRACE: **kwargs)
(nova.rpc.amqp): TRACE: File "/usr/lib/python2.7/site-packages/nova/network/manager.py", line 250, in deallocate_fixed_ip
(nova.rpc.amqp): TRACE: address)
(nova.rpc.amqp): TRACE: File "/usr/lib/python2.7/site-packages/nova/network/manager.py", line 1219, in deallocate_fixed_ip
(nova.rpc.amqp): TRACE: self.driver.release_dhcp(dev, address, vif['address'])
(nova.rpc.amqp): TRACE: File "/usr/lib/python2.7/site-packages/nova/network/linux_net.py", line 664, in release_dhcp
(nova.rpc.amqp): TRACE: utils.execute('dhcp_release', dev, address, mac_address, run_as_root=True)
(nova.rpc.amqp): TRACE: File "/usr/lib/python2.7/site-packages/nova/utils.py", line 240, in execute
(nova.rpc.amqp): TRACE: cmd=' '.join(cmd))
(nova.rpc.amqp): TRACE: ProcessExecutionError: Unexpected error while running command.
(nova.rpc.amqp): TRACE: Command: sudo nova-rootwrap dhcp_release br100 192.168.0.2 fe:16:3e:20:b3:ee
(nova.rpc.amqp): TRACE: Exit code: 1
(nova.rpc.amqp): TRACE: Stdout: ''
(nova.rpc.amqp): TRACE: Stderr: 'Traceback (most recent call last):\n File "/usr/bin/nova-rootwrap", line 69, in <module>\n env=filtermatch.get_environment(userargs))\n File "/usr/lib64/python2.7/subprocess.py", line 679, in __init__\n errread, errwrite)\n File "/usr/lib64/python2.7/subprocess.py", line 1228, in _execute_child\n raise child_exception\nOSError: [Errno 2] No such file or directory\n'

----

The issue seems to be that we need the dnsmasq-utils package? We are essentially missing /usr/bin/dhcp_release which nova currently requires.

[Vish Ishaya (vishvananda)]

dhcp_release is an optional command that is part of the dnsmasq source. Ubuntu packaged it up in dnsmasq-utils, but you could also just add it to the dnmasq package.

Looks like this has been addressed, but possibly it is being installed to a different location?

https://bugzilla.redhat.com/show_bug.cgi?id=788485

[Pádraig Brady (p-draigbrady)]

This is OK in Fedora 17. Fedora 16 is lagging a little because of dnsmasq gating issues.
I'll close this here so.
Note it's nice to see the ENOENT error BTW, rather than the previous "not authorized" :)