"time" field from libvirt input plugin never reach influxdb

[elacour]

Relevant telegraf.conf

[[inputs.libvirt]]
statistics_groups = ["cpu_total"]

Logs from Telegraf

libvirt_cpu,domain_name=xxxxx,host=yyyyyy system=1595411964000u,time=16924971591000u,user=15329559626000u 1738079263000000000

System info

telegraf 1.33.1-1, debian 12, influxdb 2.7.11-1

Docker

No response

Steps to reproduce

Configure libvirt input plugin to export cpu stats to influxdb

Expected behavior

Cpu "time" is available as a field in influxdb

Actual behavior

Only "system" and "user" fields are available on InfluxDB.

Additional info

Seems related to InfluxDB "bug" influxdata/influxdb#23024 suggesting "time" cannot be used as a field name. Solution may be to use another name such as using metric prefix like "cpu_time" ?

[srebhan]

@elacour while I agree that naming the field time is unfortunate, renaming it will cause trouble for users of other outputs. So we do have three ways forward:

1. Keep the current naming and use

[[processors.rename]]
  namepass = ["libvirt_cpu"]
  [[processors.rename.replace]]
    field = "time"
    dest = "cpu_time"
  [[processors.rename.replace]]
    field = "user"
    dest = "cpu_user"
  [[processors.rename.replace]]
    field = "system"
    dest = "cpu_system"

2. Add a flag to prefix the three CPU fields with cpu_ and make this the default in some future.
3. Rename the fields and add a big fat warning to the readme (and changelog).

I will discuss this with the team and come back to you next week...

[elacour]

I agree that renaming the field can cause trouble. The work around is ok for me, thank you ! I would suggest letting this bug report open to help others with your proposed workaround untile a true rename is included.