[Bug 1006898] Re: [SRU] dnsmasq fails at leasing issues when using vlan mode

Michael S. Moody 1006898 at bugs.launchpad.net
Tue Nov 20 00:29:44 UTC 2012


This is hitting a lot of openstack users who chose 12.04 due to the
announcement of backporting openstack to precise for 3 years:
https://wiki.ubuntu.com/ServerTeam/CloudArchive

We fall into that category. It's pretty much impossible to use stock
versions of dnsmasq and openstack in 12.04. This adds a significant
burden to our team. This is a pretty serious problem that needs to find
its way into 12.04 (precise), sooner rather than later, especially since
it affects the recommended openstack essex configuration (vlan). It's
causing our Windows Server instances to fatally lose their IP address
config. This essentially makes our cloud unpredictably unstable, with
instances coming and going randomly. Yes, there are potential
workarounds (at least for openstack), but they're ugly:

https://lists.launchpad.net/openstack/msg11696.html

nova.conf
# release leases immediately on terminate
force_dhcp_release=true
# one week lease time
dhcp_lease_time=604800
# two week disassociate timeout
fixed_ip_disassociate_timeout=1209600

Again, this needs to be fixed considering this is LTS, and considering
that precise is supposed to be a solid foundation upon which to build an
openstack cloud.

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Title:
  [SRU] dnsmasq fails at leasing issues when using vlan mode

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