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You can use the local agent function as a DMA function that is changing collectd config static and annotation that is combining libvirt information and OpenStack information into the alert. That code is included Gambia release. Manual is below link:
https://opnfv-barometer.readthedocs.io/en/stable-gambia/release/userguide/docker.userguide.html#build-and-run-localagent-and-redis-docker-images

Components

local-agent

TBA

policy-agent

local-agent has two functions that work with collectd, libvirtd and OpenStack API. Overview is below.

Image Added

Annotation

Add annotation for collectd's metrics with OpenStack information.

  • Virtual machine name
    • instance-000001 of libvirt name <- "VM foobar" in OpenStack name
  • Network interface name
    • "tap-xxx" on the host <- OpenStack "VM foobar", network ”YYY”

Dynamically config change

Change config of metrics collection while services are running.

policy-agent

policy-agent has the function that to watch metrics data stored in redis periodically and watch libvirt events, it provides some action using policies that written in YAML format. Policy diagram is below.

Image Added

Fields for policy

vm resources


vm.vcpu

vm.cpu-total

vm.memory-last_update

vm.memory-total

vm.memory-rss

vm.memory-actual_balloon

vm interfacesvm.if_errors.rx

vm.if_errors.tx

vm.if_dropped.tx

vm.if_dropped.rx

vm.if_packets.tx

vm.if_packets.rx

vm.if_octets.tx

vm.if_octets.rx

 TBA

Presentations/Videos

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