Can Harvest collect NFSv3 RPC slot tables

[cgrinds]

Matt asked on Slack if Harvest could be used to collect NFSv3 RPC slot tables

Related

• https://www.netapp.com/pdf.html?item=/media/10720-tr-4067.pdf page 123

[cgrinds]

1. Create file conf/zapiperf/cdot/9.8.0/nfsv3_rpc.yaml with the following content or create a custom_yaml as mentioned here.

name:                     NFSv3_rpc
query:                    cid
object:                   nfs_rpc

instance_key:             uuid

global_labels:
  - nfsv: v3

counters:
  - node_name  => node
  - execs_blocked_on_cid

export_options:
  require_instance_keys: false
  instance_keys:
    - node

3. Tell Harvest to use the new template by editing conf/zapiperf/default.yaml or creating a custom.yaml and adding the same there.

  NFSv3_rpc:              nfsv3_rpc.yaml

4. Test with bin/poller --poller u2 --objects NFSv3_rpc --promPort 16001

5. Verify metrics are being collected

curl -s 'http://localhost:16001/metrics' | grep -E "nfs_rpc"
nfs_rpc_execs_blocked_on_cid{cluster="umeng-aff300-05-06",datacenter="dc-1",nfsv="v3",node="umeng-aff300-05"} 0
nfs_rpc_execs_blocked_on_cid{cluster="umeng-aff300-05-06",datacenter="dc-1",nfsv="v3",node="umeng-aff300-06"} 7

[cgrinds]

ONTAP returns this counter as a delta, let us know if you would prefer the raw value.

  [counter-info]                                   -                                   *
    [desc]                                         - Total execs blocked on per cid limit.
    [is-deprecated]                                -                               false
    [name]                                         -                execs_blocked_on_cid
    [privilege-level]                              -                                diag
    [properties]                                   -                               delta
    [unit]                                         -                                none

[mdotten]

Hey Chris,

Sorry, newb question here ;)

What would that delta value look like? I would think we would want raw values, but is the delta value, a delta from full? sorry not sure what it would show as the properties of the counter being delta

Thanks!!

[cgrinds]

In this case, the delta will be the change in the number of execs_blocked_on_cid since the previous poll. More details on (metric calculations](https://github.com/NetApp/harvest/blob/main/cmd/collectors/zapiperf/README.md#metrics)

If you want the raw value, you can edit the template like so:

name:                     NFSv3_rpc
query:                    cid
object:                   nfs_rpc

instance_key:             uuid

global_labels:
  - nfsv: v3

counters:
  - node_name  => node
  - execs_blocked_on_cid

override:
  - execs_blocked_on_cid: raw

export_options:
  require_instance_keys: false
  instance_keys:
    - node

[cgrinds]

Thanks @rahulguptajss for adding the node_name, better to include 👍

[mdotten]

Ok perfect, I think raw detail (just the value) is probably more what they want, though I will let them know about the delta, because that may be a good metric for them to follow too, in a separate chart.