[openstack-dev] [neutron] high dhcp lease times in neutron deployments considered harmful (or not???)

Angus Lees gus at inodes.org
Thu Feb 5 01:08:47 UTC 2015


On Wed Feb 04 2015 at 8:02:04 PM Kevin Benton <blak111 at gmail.com> wrote:

> I proposed an alternative to adjusting the lease time early on the in the
> thread. By specifying the renewal time (DHCP option 58), we can have the
> benefits of a long lease time (resiliency to long DHCP server outages)
> while having a frequent renewal interval to check for IP changes. I favored
> this approach because it only required a patch to dnsmasq to allow that
> option to be set and patch to our agent to set that option, both of which
> are pretty straight-forward.
>

 Yep, I should have said +1 to this in my other post.  Simple coding change
that is strictly better than the current situation (other than a slight
increase in DHCP request traffic).

 - Gus
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