[WARN] Found unexpected data from json: version: "1"

[perlun]

• Varnish varnish-6.6.1 revision e6a8c860944c4f6a7e1af9f40674ea78bbdcdc66
• prometheus_varnish_exporter v1.5.1 (dc01100)

---

I am seeing this error when running the exporter in "console" (foreground) mode:

$ /opt/hibox/prometheus-varnish-exporter/bin/prometheus_varnish_exporter -verbose 
2023/03/16 13:01:04 prometheus_varnish_exporter v1.5.1 (dc01100) {
  "ListenAddress": ":9131",
  "Path": "/metrics",
  "HealthPath": "",
  "VarnishstatExe": "varnishstat",
  "VarnishDockerContainer": "",
  "Params": {
    "Instance": "",
    "VSM": ""
  },
  "Verbose": true,
  "ExitOnErrors": false,
  "Test": false,
  "Raw": false,
  "WithGoMetrics": false
}
2023/03/16 13:01:04 Found varnishstat 6.6.1 e6a8c860944c4f6a7e1af9f40674ea78bbdcdc66
2023/03/16 13:01:04 [WARN] Found unexpected data from json: version: "1"
2023/03/16 13:01:04 Test scrape done in 4.374188ms

The exposed metrics also lack almost everything of interest:

$ curl http://localhost:9131/metrics
# HELP varnish_main_counters 
# TYPE varnish_main_counters gauge
varnish_main_counters 0
# HELP varnish_up Was the last scrape of varnish successful.
# TYPE varnish_up gauge
varnish_up 1
# HELP varnish_version Varnish version information
# TYPE varnish_version gauge
varnish_version{major="6",minor="6",patch="1",revision="e6a8c860944c4f6a7e1af9f40674ea78bbdcdc66",version="6.6.1"} 1

I'll try with a newer version of the exporter now, but filing this anyway. If not for anything else, it might help others running into the same issue.

[perlun]

I think the answer is easy: I need #64, i.e. a newer version of the exporter.

Upgraded to 1.6.1 and the problem is indeed resolved. 🎉 Closing issue.