Version: 0.1
Date: July 31, 2017

Trace field name Nova database fields
INSTANCE_UUID instances.uuid
EVENT instance_actions_events.event
START_TIME instance_actions_events.start_time
START_SEC derived from START_TIME
FINISH_TIME instance_actions_events.finish_time
FINISH_SEC derived from FINISH_TIME
EVENT_DURATION derived from START_TIME and FINISH_TIME
RESULT instance_actions_events.result
MEMORY_MB instances.memory_mb
DISK_GB instances.root_gb
VCPUS instances.vcpus
INSTANCE_NAME instances.hostname
USER_ID instances.user_id
PROJECT_ID instances.project_id
HOST_NAME(PHYSICAL) instances.host

 

Details of each trace fields:

  • INSTANCE_UUID – This is unique for each KVM instance created by OpenStack.
  • EVENT – Event corresponds to the type of action performed on an OpenStack instance, such as Create, Stop, Start, Delete etc.
  • START_TIME (yyyy-MM-dd HH:mm:ss.SSS) – This fields identifies the time when a related event started executing, such as when an instance creation started or a instance deletion operation started.
  • START_SEC – Time difference, in seconds, between the recorded time of the first event and the start of the current event.
  • FINISH_TIME (yyyy-MM-dd HH:mm:ss.SSS)- This fields identifies the time when a related event completed
  • FINISH_SEC – Time difference, in seconds, between the recorded time of the first event and the finish time of the current event.
  • EVENT_DURATION – This is the required time, in seconds, for each action event, i.e. the difference between START_TIME and FINISH_TIME.
  • RESULT – Status of each action event. If the result is not success or null, then this action event was not successfully.
  • MEMORY_MB – Amount of RAM assigned to an instance at creation.
  • DISK_GB – Amount of disk assigned to an instance at creation.
  • VCPUS – Number of virtual CPUs assigned to an instance at creation.
  • INSTANCE_NAME – This is the name provided by the user while creating the VM. This name is not unique. Many instances can have the same instance name.
  • USER_ID – The user identifier of the account from which the VM was created.
  • PROJECT_ID – the project identifier of the account from which the VM was created.
  • HOST_NAME(PHYSICAL) – Name of the physical computer hosting the KVM instance.