OpenStack has the ability to set iops quotas with Teraform using openstack_blockstorage_qos_v3 which seems to correspond to Block Storage API 3 in OpenStack.

My question is on setting the qos_specs

specs = {
  read_iops_sec  = "40000"
  write_iops_sec = "40000"

Can I use Horizons (the web interface) to find peak iops for a running instance? If not, is this metric recorded somewhere that I can get with the API? I'd like to find his information out for a volume, and and an instance (with all the volumes backing it).

1 Answer 1


It will depend on the provider of the underlying Openstack infrastructure.

You will need Monasca, Ceilometer to gather the data for you.


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