Previously neutron was keeping track of dhcp lease time in order
to ensure it didn't hand out an ip address that was already leased.
This patch removes that logic and instead leverages the dhcp_release
utility. This allows us to reuse ip addresses immediately after a port
is deleted. This patch also bumps the lease time to 24 hours instead
of 2 minutes with reduces the amount of dhcp traffic.
DocImpact
There is a DocImpact for this bug related to the upgrade path. One should
first upgrade their dhcp-agents. Then wait till the dhcp_lease time has
expired. Lastly, update neutron-server in order to avoid the case where
an instance is deleted and the dnsmasq process has not released the lease
and neturon allocates that ip to a new port.
Reviewed: https:/ /review. openstack. org/37580 github. com/openstack/ neutron/ commit/ d9832282cf656b1 62c51afdefb830d acab72defe
Committed: http://
Submitter: Jenkins
Branch: master
commit d9832282cf656b1 62c51afdefb830d acab72defe
Author: Aaron Rosen <email address hidden>
Date: Tue Jul 16 16:06:32 2013 -0700
Remove DHCP lease logic
Previously neutron was keeping track of dhcp lease time in order
to ensure it didn't hand out an ip address that was already leased.
This patch removes that logic and instead leverages the dhcp_release
utility. This allows us to reuse ip addresses immediately after a port
is deleted. This patch also bumps the lease time to 24 hours instead
of 2 minutes with reduces the amount of dhcp traffic.
DocImpact
There is a DocImpact for this bug related to the upgrade path. One should
first upgrade their dhcp-agents. Then wait till the dhcp_lease time has
expired. Lastly, update neutron-server in order to avoid the case where
an instance is deleted and the dnsmasq process has not released the lease
and neturon allocates that ip to a new port.
Fixes bug: 1202392
Implements blueprint: remove-dhcp-lease
Change-Id: Ifcb4f093c92904 ceb896438987d53 e692eb7fb26