This patch will help operators determine if a node that
hosts routers has enough active routers to potentially exceed
the network capacity of the host. It can also be used to decide
if routers should be moved around/rebalanced.
Three new metrics will be published if the 'publish_router_capacity'
flag is set to true in the ovs.yaml file (off by default):
vrouter.max_bw_kb (customer metric)
ovs.vrouter.max_bw_kb (ops metric)
ovs.vrouter.host_max_bw_kb (ops metric)
This functionality depends on nova flavor bandwith quotas
being configured:
https://wiki.openstack.org/wiki/InstanceResourceQuota#Bandwidth_limits
At some point in the future when neutron supports router QOS,
this functionality should be extended to also honor that.
Change-Id: Ie00260d99bdd1f761dca28d2a5779b906a196564
962888a9ff
