A prometheus exporter for continous health check of different endpoints.
In comparision to blackbox-exporter which probes endpoints on each prometheus scrape, this exporter continuously probes the endpoints with configured RPS, so prometheus can scrape on a longer interval, and calculate success rate, latency avg or percentiles, with a much higher resolution. Also this can be used to health-check an endpoint with a high RPS synthetic load.
docker build -t health-exporter .
git clone --depth 1 https://github.com/snapp-cab/health-exporter.git
cd health-exporter
go buildsudo docker run -p 8080:8080 -v ./config.yaml:/app/config.yaml:z docker.pkg.github.com/snapp/health-exporter/image:latest- Prerequisites
- Helm 3.0+ (Helm 2 is not supported)
- Kubernetes 1.10+ - This is the earliest version of Kubernetes tested. It is possible that this chart works with earlier versions but it is untested.
- Add the SnappCab Helm Repository:
helm repo add snapp-cab https://snapp-cab.github.io/health-exporter/charts
helm repo update- Install with:
helm install health-exporter snapp-cab/health-exporterexport VERSION=1.0.0
wget https://github.com/cafebazaar/health-exporter/releases/download/v${VERSION}/health-exporter-${VERSION}.linux-amd64.tar.gz
tar xvzf health-exporter-${VERSION}.linux-amd64.tar.gz health-exporter-${VERSION}.linux-amd64/health-exporterRun health-exporter
health-exporter -config <PathToConfig>See example configuration file for sample config file.
Currently, health-exporter supports these probes:
| Name | Description |
|---|---|
| http | For http(s) calls to different endpoints |
| dns | For dns requests to different DNS servers |
| k8s | For k8s-api health check |
| Metric | Notes |
|---|---|
| health_http_requests_total | Total number of http requests |
| health_http_duration_seconds_count | Total number of http requests |
| health_http_duration_seconds_sum | Duration of http requests with response code |
| health_http_duration_seconds_bucket | Count of http requests per bucket (for calculating percentile) |
| health_dns_requests_total | Total number of dns requests |
| health_dns_duration_seconds_count | Total number of dns requests |
| health_dns_duration_seconds_sum | Duration of dns requests with response code |
| health_dns_duration_seconds_bucket | Count of dns requests per bucket (for calculating percentile) |
| health_k8s_http_request_total | Total number of k8s api requests |
| health_k8s_http_request_duration_seconds_count | Total number of k8s api requests |
| health_k8s_http_request_duration_seconds_sum | Duration of k8s api requests with response code |
| health_k8s_pod_count | Number of pods (used as a health-check for api-server) |
If you find a security vulnerability or any security related issues, please DO NOT file a public issue, instead send your report privately to cloud@snapp.cab. Security reports are greatly appreciated and we will publicly thank you for it.
Apache-2.0 License, see LICENSE.