On 01/17/2018 12:46 PM, Jorge Luiz Correa wrote:
Hi, I would like some help to understand what does means each field in
output of the command 'openstack hypervisor stats show':
it's an amalgamation of legacy information that IMHO should be
deprecated from the Compute API.
FWIW, the "implementation" for this API response is basically just a
single SQL statement issued against each Nova cell DB:
https://github.com/openstack/nova/blob/master/nova/db/sqlalchemy/api.py#L755
$ openstack hypervisor stats show
+----------------------+---------+
| Field | Value |
+----------------------+---------+
| count | 5 |
number of hypervisor hosts in the system that are not disabled.
| current_workload | 0 |
The SUM of active boot/reboot/migrate/resize operations going on for all
the hypervisor hosts.
What actions represent "workload"? See here:
https://github.com/openstack/nova/blob/master/nova/compute/stats.py#L45
| disk_available_least | 1848 |
who knows? it's dependent on the virt driver and the disk image backing
file and about as reliable as a one-armed guitar player.
| free_disk_gb | 1705 |
theoretically should be sum(local_gb - local_gb_used) for all hypervisor
hosts.
| free_ram_mb | 2415293 |
theoretically should be sum(memory_mb - memory_mb_used) for all
hypervisor hosts.
| local_gb | 2055 |
amount of space, in GB, available for ephemeral disk images on the
hypervisor hosts. if shared storage is used, this value is as useful as
having two left feet.
| local_gb_used | 350 |
the amount of storage used for ephemeral disk images of instances on the
hypervisor hosts. if the instances are boot-from-volume, this number is
about as valuable as a three-dollar bill.
| memory_mb | 2579645 |
the total amount of RAM the hypervisor hosts have. this does not take
into account the amount of reserved memory the host might have configured.
| memory_mb_used | 164352 |
the total amount of memory allocated to guest VMs on the hypervisor hosts.
| running_vms | 13 |
the total number of VMs on all the hypervisor hosts that are NOT in the
DELETED or SHELVED_OFFLOADED states.
https://github.com/openstack/nova/blob/master/nova/compute/vm_states.py#L78
| vcpus | 320 |
total amount of physical CPU core-threads across all hypervisor hosts.
| vcpus_used | 75 |
+----------------------+---------+
total number of vCPUs allocated to guests (regardless of VM state)
across the hypervisor hosts.
Best,
-jay
Anyone could indicate the documentation that explain each one? Some of
them is clear but others are not.
Thanks!
- JLC
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