commit 44b9cc3b5b49d6bdbd3c59d92e8303203cab038b
Author: Pierre Riteau <email address hidden>
Date: Wed Nov 27 16:32:47 2019 +0100
[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).
Reviewed: https:/ /review. opendev. org/699191 /git.openstack. org/cgit/ openstack/ kolla-ansible/ commit/ ?id=44b9cc3b5b4 9d6bdbd3c59d92e 8303203cab038b
Committed: https:/
Submitter: Zuul
Branch: stable/rocky
commit 44b9cc3b5b49d6b dbd3c59d92e8303 203cab038b
Author: Pierre Riteau <email address hidden>
Date: Wed Nov 27 16:32:47 2019 +0100
[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 /bugs.launchpad .net/charm- nova-compute/ +bug/1780348 /bugs.launchpad .net/fuel/ +bug/1488938 /bugs.launchpad .net/tripleo/ +bug/1690087 /github. com/crowbar/ crowbar- openstack/ commit/ 0583a0c94996df6 b784229e8a534f9 55eaca85bc /github. com/crowbar/ crowbar- openstack/ commit/ 3dd21ea62ac152e 40bfdfee4b8e25a 528c82a79f /opendev. org/openstack/ tripleo- heat-templates/ commit/ 1651a1805a16212 299fe0a91aebb2a 91ed39bc6e
* https:/
* https:/
* https:/
* https:/
* https:/
* https:/
Change-Id: I60c871e8eb9f2c 086818ff077987f 2390930800c 72c9d184ed3f145 b955f11163)
Closes-Bug: #1844349
(cherry picked from commit 4234cc4b5b3ca71