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docs(inputs.netflow): Add note on how to tag metrics (#15713)

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Sven Rebhan 2024-08-07 16:01:10 +02:00 committed by GitHub
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plugins/inputs/netflow/README.md
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@ -112,7 +112,23 @@ the start of streaming and in regular intervals (configurable in the device) and
Telegraf has no means to trigger sending of the templates. Therefore, we need to
skip the packets until the templates are resent by the device.
### Template
## Metrics are missing at the output
The metrics produced by this plugin are not tagged in a connection specific
manner, therefore outputs relying on unique series key (e.g. InfluxDB) require
the metrics to contain tags for the protocol, the connection source and the
connection destination. Otherwise, metrics might be overwritten and are thus
missing.
The required tagging can be achieved using the `converter` processor
```toml
[[processors.converter]]
[processors.converter.fields]
tag = ["protocol", "src", "src_port", "dst", "dst_port"]
```
__Please be careful as this will produce metrics with high cardinality!__
## Metrics