no token found

[hannesm]

What did you do?

I installed prometheus 2.0.0-beta.2.linux-amd64 and installed a custom exporter.
I'd be delighted to hear what is wrong in my exporter, but I couldn't find much documentation about allowed characters etc.

What did you expect to see?

statistics :)

What did you see instead? Under which circumstances?

when fetching my own exporter, I receive the following error on the console where I started prometheus:

WARN[0659] append failed                                 err="no token found" source="scrape.go:648" target="{__address__="192.168.42.1:9080", __metrics_path__="/metrics", __scheme__="http", instance="192.168.42.1:9080", job="vmm"}"

Environment

• System information:

    Linux 4.4.0-87-generic x86_64 (ubuntu 16.04)
  

• Prometheus version:

  prometheus, version 2.0.0-beta.2 (branch: HEAD, revision: a52f082)
  build user: root@41a0740ea598
  build date: 20170818-08:16:50
  go version: go1.8.3

• Prometheus configuration file:

  - job_name: 'vmm'
    static_configs:
      - targets: ['192.168.42.1:9080']

• Logs:

when I manually download http://192.168.42:9080/metrics, I get the output available at https://berlin.ccc.de/~hannes/data.txt

[fabxc]

The bad metric is this one sn_nqsb_io_EOI_without_any_in-service_interrupt. No dashes allowed :)

Admittedly, the new parser certainly gives less valuable error messages. But it's probably rare enough in the general case since client libraries ensure correctness.
I'd generally recommend to use one of them for custom exporters.

I'll look into adding line information at least though.

Closing here. Please reopen if that doesn't resolve the issue.

[hannesm]

@fabxc thanks for your reply. I'd appreciate line number information in "no token found" -- or some documentation how to debug such a problem.

sorry for not spotting the - myself. it works now.

[lynchc]

+1

[bavuonglong]

@fabxc I got the same error : no token found when integrate prometheus into spring boot app, the thing is inside output of /metrics, I see a metric has "-" character, it is ""gauge.response.star-star.favicon.ico": 129,
"counter.status.200.star-star.favicon.ico": 1,"
You can see full output here: https://pastebin.com/efH010Tz
Due to this is default metric from spring actuator, do you have any suggestion?

[brian-brazil]

It makes more sense to ask questions like this on the prometheus-users mailing list rather than in a GitHub issue. On the mailing list, more people are available to potentially respond to your question, and the whole community can benefit from the answers provided.

[calston]

This also means if your real target hostname has a dash in it then blackbox exporter is useless.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.