OpenStack: Building a Cloud Environment

Billing and usage reporting

After Ceilometer has been configured, we will need a billing system that can use this data and present it to the user in a usable format.

Some of the meters that are used in case of the guest virtual machine would typically be as follows:

Name	Type	Unit	Meaning
cpu	cumulative	ns	The total CPU time used
cpu_util	gauge	%	The average CPU utilization. of the instance
disk.ephemeral.size	gauge	GB	The ephemeral disk size
disk.read.bytes	cumulative	B	The total number of bytes read
disk.read.requests	cumulative	request	The total number of read requests made
disk.root.size	gauge	GB	The root disk size for the instance
disk.write.bytes	cumulative	B	The total number of bytes written to ...