On 02/08/2012 12:47 PM, Ilya Kharin wrote:
> Hello.
> 
> The component nova-network disassociate fixed IP of VM when it deleted. There 
> are two mechanisms by timeout and force. Disassociate by timeout is a 
> periodical task (period can be set by flag --fixed_ip_disassociate_timeout). 
> The force disassociate is optional (enabled by flag --force_dhcp_release) and 
> involved when instance have been deleted. In fact this process use CLI tool 
> dhcp_release to send DHCPRELEASE message to dnsmasq server for drop lease and 
> change state of fixed ip in database. In multi-host scheme it is important. 
> So, dhcp_release is part of dnsmasq and not included in builds in Fedora and 
> CentOS. Also, in Fedora builds of openstack-nova does not exists sudoers rule 
> for dhcp_release command.
> 
> I created bug report for building dnsmasq with dhcp_release 
> https://bugzilla.redhat.com/show_bug.cgi?id=788485.

Given that this support is now in Fedora, should
we enable --force_dhcp_release do you think?
I.E. are there any reasons not to do that,
if the utilities are available?

cheers,
Pádraig.

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