panic: "pg_settings_mem_guard_enable-auth-hook" is not a valid metric name - when trying to get timescale metrics.

[aagarwalla-fx]

What did you do?
Start dockerized postgres_exporter as per instructions for timescale DB.

What did you expect to see?
postgres_exporter running stable, and export metrics

What did you see instead? Under which circumstances?
postgres_exporter crashes as soon as it starts.

Environment

• Image sha -

docker inspect quay.io/prometheuscommunity/postgres-exporter| jq -r '.[].RepoDigests[]' | awk -F@ '{print $2}'
sha256:6999a7657e2f2fb0ca6ebf417213eebf6dc7d21b30708c622f6fcb11183a2bb0

• PostgreSQL version:

• Logs:

panic: "pg_settings_mem_guard_enable-auth-hook" is not a valid metric name

goroutine 52 [running]:
github.com/prometheus/client_golang/prometheus.MustNewConstMetric(...)
	/go/pkg/mod/github.com/prometheus/[email protected]/prometheus/value.go:129
main.(*pgSetting).metric(0xc00020c640, 0xc00020a2a0)
	/app/cmd/postgres_exporter/pg_setting.go:99 +0x2ff
main.querySettings(0xc00022e070, 0xc00025a000)
	/app/cmd/postgres_exporter/pg_setting.go:55 +0x1d8
main.(*Server).Scrape(0xc00025a000, 0xc00022e070, 0x0?)
	/app/cmd/postgres_exporter/server.go:120 +0xc8
main.(*Exporter).scrapeDSN(0xc000174000, 0xc00022e070, {0xc0000be140, 0x92})
	/app/cmd/postgres_exporter/datasource.go:114 +0x132
main.(*Exporter).scrape(0xc000174000, 0xc00022e070)
	/app/cmd/postgres_exporter/postgres_exporter.go:678 +0x16b
main.(*Exporter).Collect(0xc000174000, 0xc00022e070)
	/app/cmd/postgres_exporter/postgres_exporter.go:567 +0x25
github.com/prometheus/client_golang/prometheus.(*Registry).Gather.func1()
	/go/pkg/mod/github.com/prometheus/[email protected]/prometheus/registry.go:458 +0xe5
created by github.com/prometheus/client_golang/prometheus.(*Registry).Gather in goroutine 39
	/go/pkg/mod/github.com/prometheus/[email protected]/prometheus/registry.go:548 +0xbab

[777dimas]

I have the same error:

panic: "pg_settings_mem_guard_enable-auth-hook" is not a valid metric name                                                                                                                                                                                                            │
│                                                                                                                                                                                                                                                                                       │
│ goroutine 51 [running]:                                                                                                                                                                                                                                                               │
│ github.com/prometheus/client_golang/prometheus.MustNewConstMetric(...)                                                                                                                                                                                                                │
│     /go/pkg/mod/github.com/prometheus/[email protected]/prometheus/value.go:129                                                                                                                                                                                                   │
│ main.(*pgSetting).metric(0xc00034fae0, 0xc0002578f0)                                                                                                                                                                                                                                  │
│     /app/cmd/postgres_exporter/pg_setting.go:99 +0x2ff                                                                                                                                                                                                                                │
│ main.querySettings(0xc000225030, 0xc00020a0b0)                                                                                                                                                                                                                                        │
│     /app/cmd/postgres_exporter/pg_setting.go:55 +0x1d8                                                                                                                                                                                                                                │
│ main.(*Server).Scrape(0xc00020a0b0, 0xc000225030, 0xb0?)                                                                                                                                                                                                                              │
│     /app/cmd/postgres_exporter/server.go:120 +0xc8                                                                                                                                                                                                                                    │
│ main.(*Exporter).scrapeDSN(0xc000000180, 0xc000225030, {0xc00002c011, 0x7c})                                                                                                                                                                                                          │
│     /app/cmd/postgres_exporter/datasource.go:114 +0x132                                                                                                                                                                                                                               │
│ main.(*Exporter).scrape(0xc000000180, 0xc000225030)                                                                                                                                                                                                                                   │
│     /app/cmd/postgres_exporter/postgres_exporter.go:678 +0x16b                                                                                                                                                                                                                        │
│ main.(*Exporter).Collect(0xc000000180, 0xc000225030)                                                                                                                                                                                                                                  │
│     /app/cmd/postgres_exporter/postgres_exporter.go:567 +0x25                                                                                                                                                                                                                         │
│ github.com/prometheus/client_golang/prometheus.(*Registry).Gather.func1()                                                                                                                                                                                                             │
│     /go/pkg/mod/github.com/prometheus/[email protected]/prometheus/registry.go:458 +0xe5                                                                                                                                                                                          │
│ created by github.com/prometheus/client_golang/prometheus.(*Registry).Gather in goroutine 14                                                                                                                                                                                          │
│     /go/pkg/mod/github.com/prometheus/[email protected]/prometheus/registry.go:548 +0xbab     

Image ID: quay.io/prometheuscommunity/postgres-exporter@sha256:6999a7657e2f2fb0ca6ebf417213eebf6dc7d21b30708c622f6fcb11183a2bb0

[sysadmind]

v0.17.0 should have the fix for this.