Pierre Riteau 4234cc4b5b [neutron] Adjust neighbour table thresholds ...

When clouds have a large number of hosts, the default size of the ARP
cache is too small. The cache can overflow, which means that the system
has no way to reach some IP addresses.

Increasing threshold limits addresses the situation, in a reasonably
safe way (the maximum impact is 5MB or so of additional RAM used).

More context on this issue:

* http://man7.org/linux/man-pages/man7/arp.7.html
* https://bugs.launchpad.net/charm-nova-compute/+bug/1780348
* https://bugs.launchpad.net/fuel/+bug/1488938
* https://bugs.launchpad.net/tripleo/+bug/1690087
* 0583a0c949
* 3dd21ea62a
* 1651a1805a

Change-Id: I60c871e8eb9f2c086818ff077987f2390930800c
Closes-Bug: #1844349

2019-11-27 16:32:47 +01:00

..

defaults

[neutron] Adjust neighbour table thresholds

2019-11-27 16:32:47 +01:00

handlers

Neutron: add support to use legacy iptables

2019-10-17 09:42:00 +00:00

meta

Reduce dependencies on the dest nodes

2015-08-06 01:32:05 +00:00

tasks

[neutron] Adjust neighbour table thresholds

2019-11-27 16:32:47 +01:00

templates

Remove endpoint_type from neutron.conf [DEFAULT] group

2019-11-25 12:02:55 +01:00