yahoo-eng-team team mailing list archive

[Juan Antonio Osorio Robles <jaosorior@xxxxxxxxxx>]

** Changed in: tripleo
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/1188218

Title:
  Support standard ceilometer compute metrics with nova baremetal

Status in Ceilometer:
  Fix Released
Status in Ironic:
  Fix Released
Status in OpenStack Compute (nova):
  Won't Fix
Status in tripleo:
  Invalid

Bug description:
  I guess this is a subset of bug #1004468 and
  https://blueprints.launchpad.net/ceilometer/+spec/non-libvirt-hw

  However, it's a bit different for nova-baremetal. There is no
  hypervisor we can query for CPU, disk and network statistics so we
  can't just add another plugin for ceilometer's compute agent.

  Instead, we will need an agent which runs inside each baremetal
  instance and posts samples to ceilometer's public /meters/ API

  At a first glance, these look like the counters which require a guest
  agent:

   cpu                      CPU time used
   cpu_util                 CPU utilisation
   disk.read.request        Number of read requests
   disk.write.request       Number of write requests
   disk.read.bytes          Volume of read in B
   disk.write.bytes         Volume of write in B
   network.incoming.bytes   number of incoming bytes on the network
   network.outgoing.bytes   number of outgoing bytes on the network
   network.incoming.packets number of incoming packets
   network.outgoing.packets number of outgoing packets

  For the other compute counters, we can add baremetal support to the
  ceilometer compute agent - e.g. these counters:

   instance                 Duration of instance
   instance:<type>          Duration of instance <type> (openstack types)
   memory                   Volume of RAM in MB
   cpus                     Number of VCPUs
   disk.root.size           Size of root disk in GB
   disk.ephemeral.size      Size of ephemeral disk in GB

  One thing to consider is access control to these counters - we
  probably don't usually allow tenants to update these counters in, but
  in this case the tenant will require that ability.

  It's unclear whether this guest agent would live in ceilometer, nova
  baremetal or ironic. It's interfacing with (what should be) a very
  stable ceilometer API, so there's no particular need for it to live in
  ceilometer.

  I'm also adding a tripleo task, since I expect tripleo will want these
  metrics available for things like auto-scaling or simply resource
  monitoring. We'd need at least a diskimage-builder element which
  includes the guest agent.

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