feat: secret files, web config and better docs

changelog/1.2.0_2023-10-26/file-secrets.md

@@ -0,0 +1,8 @@
+Change: Read secrets form files
+
+We have added proper support to load secrets like the password from files or
+from base64-encoded strings. Just provide the flags or environment variables
+for token or private key with a DSN formatted string like `file://path/to/file`
+or `base64://Zm9vYmFy`.
+
+https://github.com/promhippie/hetzner_exporter/pull/142

changelog/1.2.0_2023-10-26/pprof-profiler.md

@@ -0,0 +1,8 @@
+Enhancement: Integrate option pprof profiling
+
+We have added an option to enable a pprof endpoint for proper profiling support
+with the help of tools like Parca. The endpoint `/debug/pprof` can now
+optionally be enabled to get the profiling details for catching potential memory
+leaks.
+
+https://github.com/promhippie/hetzner_exporter/pull/142

changelog/1.2.0_2023-10-26/web-config.md

@@ -0,0 +1,7 @@
+Change: Integrate standard web config
+
+We integrated the new web config from the Prometheus toolkit which provides a
+configuration for TLS support and also some basic builtin authentication. For
+the detailed configuration you can check out the documentation.
+
+https://github.com/promhippie/hetzner_exporter/pull/142

docs/content/kubernetes.md

@@ -64,12 +64,13 @@ helm install hetzner-exporter promhippie/hetzner-exporter
 {{< / highlight >}}
 
 You can also watch that available values and generally the details of the chart
-provided by us within our [chart][chart] repository.
+provided by us within our [chart][chart] repository or on [Artifacthub][ahub].
 
 After applying this manifest the exporter should be directly visible within your
 Prometheus instance depending on your installation if you enabled the
 annotations or the service monitor.
 
 [kustomize]: https://github.com/kubernetes-sigs/kustomize
 [helm]: https://helm.sh
-[chart]: https://github.com/promhippie/charts/tree/master/charts/hetzner-exporter
+[chart]: https://github.com/promhippie/charts/tree/master/stable/hetzner-exporter
+[ahub]: https://artifacthub.io/packages/helm/promhippie/hetzner-exporter

docs/content/usage.md

@@ -111,6 +111,22 @@ support for it, for details about the config format look at the
       - HETZNER_EXPORTER_LOG_PRETTY=true
 {{< / highlight >}}
 
+If you want to provide the required secrets from a file it's also possible. For
+this use case you can write the secret to a file on any path and reference it
+with the following format:
+
+{{< highlight diff >}}
+  hetzner_exporter:
+    image: promhippie/hetzner-exporter:latest
+    restart: always
+    environment:
+-     - HETZNER_EXPORTER_USERNAME=#ws+qOeMD4UP
+-     - HETZNER_EXPORTER_PASSWORD=CNFPCgivAAqWu613
++     - HETZNER_EXPORTER_USERNAME=file://path/to/secret/file/with/username
++     - HETZNER_EXPORTER_PASSWORD=file://path/to/secret/file/with/password
+      - HETZNER_EXPORTER_LOG_PRETTY=true
+{{< / highlight >}}
+
 Finally the exporter should be configured fine, let's start this stack with
 [docker-compose][compose], you just need to execute `docker-compose up` within
 the directory where you have stored the `prometheus.yml` and

docs/layouts/partials/style.html

@@ -68,7 +68,7 @@
 		line-height: 1.6;
 		font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
 		color: #242424;
-		max-width: 800px;
+		max-width: 900px;
 		margin: 5% auto;
 	}
 
@@ -115,6 +115,7 @@
 	h3 {
 		font-size: 18px;
 		margin-bottom: 0.3em;
+		margin-top: 1.0em;
 	}
 
 	h1 small a {
@@ -215,6 +216,11 @@
 
 	dl dt {
 		font-weight: bold;
+		margin-top: 10px;
+	}
+
+	dl dt:first-child {
+		margin-top: 0px;
 	}
 
 	dl dd {

docs/partials/envvars.md

@@ -10,6 +10,15 @@ HETZNER_EXPORTER_WEB_ADDRESS
 HETZNER_EXPORTER_WEB_PATH
 : Path to bind the metrics server, defaults to `/metrics`
 
+HETZNER_EXPORTER_WEB_PPROF
+: Enable pprof debugging for server, defaults to `false`
+
+HETZNER_EXPORTER_WEB_TIMEOUT
+: Server metrics endpoint timeout, defaults to `10s`
+
+HETZNER_EXPORTER_WEB_CONFIG
+: Path to web-config file
+
 HETZNER_EXPORTER_REQUEST_TIMEOUT
 : Request timeout as duration, defaults to `5s`
 

docs/partials/metrics.md

@@ -4,56 +4,56 @@ hetzner_request_duration_seconds{collector}
 hetzner_request_failures_total{collector}
 : Total number of failed requests to the api per collector
 
-hetzner_server_cancelled{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_server_cancelled{id, name, datacenter}
 : If 1 the server have been cancelled, 0 otherwise
 
-hetzner_server_flatrate{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_server_flatrate{id, name, datacenter}
 : If 1 the server got a flatrate enabled, 0 otherwise
 
-hetzner_server_paid_timestamp{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_server_paid_timestamp{id, name, datacenter}
 : Timestamp of the date until server is paid
 
-hetzner_server_running{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_server_running{id, name, datacenter}
 : If 1 the server is running, 0 otherwise
 
-hetzner_server_traffic_bytes{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_server_traffic_bytes{id, name, datacenter}
 : Amount of included traffic for the server
 
-hetzner_ssh_key{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_ssh_key{name, type, size, fingerprint}
 : Information about SSH keys in your Hetzner robot
 
-hetzner_storagebox_cancelled{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_storagebox_cancelled{id, name, location, login}
 : If 1 the storagebox have been cancelled, 0 otherwise
 
-hetzner_storagebox_data{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_storagebox_data{id, name, location, login}
 : Used storage by files for the storagebox in MB
 
-hetzner_storagebox_external{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_storagebox_external{id, name, location, login}
 : If 1 the storagebox can be accessed from external, 0 otherwise
 
-hetzner_storagebox_locked{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_storagebox_locked{id, name, location, login}
 : If 1 the storagebox have been locked, 0 otherwise
 
-hetzner_storagebox_paid{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_storagebox_paid{id, name, location, login}
 : Timestamp of the date until storagebox is paid
 
-hetzner_storagebox_quota{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_storagebox_quota{id, name, location, login}
 : Available storage for the storagebox in MB
 
-hetzner_storagebox_samba{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_storagebox_samba{id, name, location, login}
 : If 1 the storagebox can be accessed via samba, 0 otherwise
 
-hetzner_storagebox_snapshots{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_storagebox_snapshots{id, name, location, login}
 : Used storage by snapshots for the storagebox in MB
 
-hetzner_storagebox_ssh{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_storagebox_ssh{id, name, location, login}
 : If 1 the storagebox can be accessed via ssh, 0 otherwise
 
-hetzner_storagebox_usage{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_storagebox_usage{id, name, location, login}
 : Used storage for the storagebox in MB
 
-hetzner_storagebox_webdav{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_storagebox_webdav{id, name, location, login}
 : If 1 the storagebox can be accessed via webdav, 0 otherwise
 
-hetzner_storagebox_zfs{<prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>, <prometheus.ConstrainedLabel Value>}
+hetzner_storagebox_zfs{id, name, location, login}
 : If 1 the zfs directory is visible, 0 otherwise

go.mod

@@ -9,26 +9,37 @@ require (
 	github.com/joho/godotenv v1.5.1
 	github.com/oklog/run v1.1.0
 	github.com/prometheus/client_golang v1.17.0
+	github.com/prometheus/exporter-toolkit v0.10.0
 	github.com/stretchr/testify v1.8.4
 	github.com/urfave/cli/v2 v2.25.7
 )
 
 require (
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
-	github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
+	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.3 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/go-logfmt/logfmt v0.6.0 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/jpillora/backoff v1.0.0 // indirect
 	github.com/kr/text v0.2.0 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/matttproud/golang_protobuf_extensions/v2 v2.0.0 // indirect
+	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/client_model v0.4.1-0.20230718164431-9a2bf3000d16 // indirect
-	github.com/prometheus/common v0.44.0 // indirect
-	github.com/prometheus/procfs v0.11.1 // indirect
+	github.com/prometheus/client_model v0.5.0 // indirect
+	github.com/prometheus/common v0.45.0 // indirect
+	github.com/prometheus/procfs v0.12.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
-	golang.org/x/sys v0.11.0 // indirect
+	golang.org/x/crypto v0.14.0 // indirect
+	golang.org/x/net v0.17.0 // indirect
+	golang.org/x/oauth2 v0.13.0 // indirect
+	golang.org/x/sync v0.4.0 // indirect
+	golang.org/x/sys v0.13.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
+	google.golang.org/appengine v1.6.8 // indirect
 	google.golang.org/protobuf v1.31.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )