Rename dinamically

Telegraf
1

Is it possible for telegraf,
rename a field with a string value that the same script got from the agent?
example:
name |data
data1 | 33
data2 | 22
and also :
dataA | temperature
dataB | temperature_ext

telegraf could send to influx :slight_smile:
temperature |33
temperature_ext|22

2

Hello @tinyG,
Is that a JSON that you have?
What input format do you have?
You could use processors.converter and processors.rename

3

Or maybe just rename actually.

# Input plugin to gather data
[[inputs.file]]
  files = ["/path/to/input/file.json"]  # Replace with your data source
  data_format = "json"

# Rename fields based on mapping
[[processors.rename]]
  [[processors.rename.replace]]
    field = "data1"
    dest = "temperature"

  [[processors.rename.replace]]
    field = "data2"
    dest = "temperature_ext"

# Output plugin to send data to InfluxDB
[[outputs.influxdb_v2]]
  urls = ["http://localhost:8086"]
  token = "your-token"
  organization = "your-org"
  bucket = "your-bucket"

Assuming they’re all fields.
Does that help?

4

Thank you for replies,
I tried to check telegraf/docs/CONFIGURATION.md at master · influxdata/telegraf · GitHub
override / rename
in my case:
[[inputs.snmp.field]]
name = “interface_name_2”
oid = “.1.3.6.1.2” #( <— just an example ! )
#now in “interface_name_2” I got “WAN_b” (it is a string)

[[inputs.snmp.field]]
name = “counter_value_2”
oid = “.1.3.6.1” #( <— just an example ! )
#here in counter_value_2 I will have a numeric value : 120022202 (bytes)

I cannot write:

[[inputs.snmp.field]]
name = “${interface_name_2}”
#I would naming the field with the value got to the beginning “WAN_b”
oid = “.1.3.6.1”

I can do it statically or rename later…
maybe is not possible just using telegraf itself.

Thank you!

5

For collection interfaces and their name, you should look into using [[inputs.snmp.table]].

6

Thank you for your input,

Something like this:
[[inputs.snmp.table]]
name = “cpu_usage”
oid = “1.3.6.1.4.1.2021.10.1.5” # OID for CPU

[[inputs.snmp.table.field]]
name = “cpuIndex”
oid = “1.3.6.1.4.1.2021.10.1.1” # OID CPU’s index

[[inputs.snmp.table.field]]
name = “cpuLoad”
oid = “1.3.6.1.4.1.2021.10.1.5”

But I would get name of “cpuindex” dinamically from another OID,
how to achieve this?

7

Depends on how the relation of the other OID is. If it has the same index, then you can just add that as a new field in this table.

[[inputs.snmp.table.field]]
  name = “cpuName”
  oid = “1.3.6.1.something”
  is_tag = true

If you need to lookup the value of the index field, then you will need to look into processors.snmp_lookup.