We are landing a Mitaka fix. The bug is not present in Newton+. I close
it as fixed.
** Tags added: l3-ipam-dhcp
** Changed in: neutron
Status: Confirmed => Fix Released
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dnsmasq host file entries can return from the grave
Status in neutron:
With a Mitaka system, if one creates a Reasonably Large Number (tm) of
instances (eg 448) via:
neutron floatingip-create <portid>
nova boot --net portid=<portid>
and then once they are all created, delete them via:
delete all the instances via the cCLI (groups of 10 or 14 at a time waiting
for CLI completion)
delete all the ports (groups of 10 or 14 at a time waiting for CLI completion)
delete the floating IPs (groups of 10 or 14 at a time waiting for CLI
then as one watches the wc -l for the dnsmasq host file, one can see
it go down to an expected value of three (the three IPs for the
network/subnet for DHCP and routing), but then it starts to rebound,
as entries appear to return from the grave.
The entries are not specific to a given compute node - they are
associated with instances across all the compute nodes hosting the
In this specific setup, it did not appear to happen for 224 instances,
or 112 etc etc. It seems to have happened at least twice out of three
attempts at 448 instances.
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