tcp_Client

[Mohd Hesam]

I want to Plot graph of tcp_client from bind_exporter.
is there any option in bind_exporter ,If not please mark this as feature-request
this is rndc status .
+++++++++++++++++
recursive clients: 4/900/1000
✔ tcp clients: 3/150
TCP high-water: 6
server is up and running
+++++++++++++++
kindly Suggest.

[Daniel Swarbrick]

The current TCP client count is not exposed via the HTTP statistics channels. The TCP high-water is available via http://localhost:8053/json/v1/server:

{
  "nsstats":{
    "TCPConnHighWater":32,

There are also socket stats available via http://localhost:8053/json/v1/net

{
  "json-stats-version":"1.8",
  "boot-time":"2024-02-04T17:26:28.754Z",
  "config-time":"2024-02-04T17:26:28.846Z",
  "current-time":"2024-02-14T22:12:37.821Z",
  "version":"9.19.19-1-Debian",
  "sockstats":{
    "UDP4Open":227854,
    "TCP4Open":1703,
    "UDP4Close":227846,
    "TCP4Close":121809,
    "TCP4ConnFail":1071,
    "UDP4Conn":227846,
    "TCP4Conn":622,
    "TCP4Accept":120118,
    "UDP4Active":10,
    "TCP4Active":16
  }
}

In both cases, bind_exporter does not currently implement parsing of these data.

[Mohd Hesam]

So we cannot monitor and plot graphs of current TCP client count unless they are exposed via the HTTP statistics channels ?

[Daniel Swarbrick]

So we cannot monitor and plot graphs of current TCP client count unless they are exposed via the HTTP statistics channels ?

I mean there is no feasible way currently to obtain that data with bind_exporter, since the HTTP statistics channel is the sole method employed by bind_exporter to fetch counters from BIND.

There are other means at your disposal, such as writing your own textfile collector script which called rndc status and parsing the desired output from that.

[Mohd Hesam]

nsstats":{
"ReqTCP":0,
----±
Can you tell me what data it stores, because I thought this is the data I want. But this is not that statistic, I just want to know what data is stored in this parameter?

[Daniel Swarbrick]

You can find detailed descriptions of name server statistics counters at https://bind9.readthedocs.io/en/latest/reference.html

ReqTCP
This indicates the number of TCP requests received.