Hi Catalin, the JSON parser currently does not support this, but there is no
reason that it couldn't be modified to support it.
But just to be clear, non-string tags are NOT supported by influxdb
line-protocol, so the integers would need to be converted into strings.
Converting integers or floats into string tags is a bit dangerous in terms of
series cardinality. InfluxDB does not support unlimited unique string tags, so
each additional unique string will increase your memory consumption. In the
case of integers and floats, there are obviously an infinite number of possible
values, so you would need to be careful that your particular use-case does not
have the possibility of infinite values.
On Saturday, July 30, 2016 at 5:40:54 PM UTC+1, Catalin Petrescu wrote:
> hi all,
>
> Wondering if there is any plan to support non string values as tags in
> telegraf kafka_consumers.
>
> My issue is i have the following kafka message in json:
> {
> "tos": 192,
> "as_dst": 1,
> "as_src": 1,
> "mask_dst": 32,
> "local_pref": 0,
> "net_dst": "10.1.1.2",
> "as_path": "",
> "peer_ip_dst": "",
> "peer_as_src": 0,
> "mask_src": 32,
> "net_src": "10.1.1.1",
> "peer_as_dst": 0,
> "peer_ip_src": "10.255.255.3",
> "iface_in": 526,
> "packets": 4,
> "bytes": 306
> }
>
> and need to set tags for non string values ( example: "as_src": 1,
> "peer_as_src": 0 ) .
>
> Looking at :
> https://github.com/influxdata/telegraf/blob/master/docs/DATA_FORMATS_INPUT.md
> , strings are ignored unless specified as a tag_key . Any reason integers
> cannot be used as tags.
>
> Regards,
> Catalin
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