Prometheus exporter for x509 certificates written in Go. node-cert-exporter will parse SSL certificates in a number of directories recursively and expose their expiry as a Prometheus metric at /metrics. It can run on Kubernetes as a Deployment or DaemonSet, or using Docker.
This project is currently in beta and is looking for contributors. Feel free to leave your feedback using issues or pull requests.
kubectl apply -f https://raw.githubusercontent.com/amimof/node-cert-exporter/master/deploy/daemonset.yml
docker run -p 9117:9117 ghcr.io/amimof/node-cert-exporter --logtostderr=true --include-glob /etc/ssl/*/*.pem
helm repo add node-cert-exporter https://amimof.github.io/node-cert-exporter
helm repo update
helm install node-cert-exporter node-cert-exporter/node-cert-exporter
curl -LOs https://github.com/amimof/node-cert-exporter/releases/latest/download/node-cert-exporter-linux-amd64 && chmod +x node-cert-exporter-linux-amd64
./node-cert-exporter-linux-amd64 --include-glob /etc/ssl/*/*.pem
git clone https://github.com/amimof/node-cert-exporter.git
cd node-cert-exporter
make
Once the the node-cert-exporter is scraped by Prometheus, the metrics can easily be visualized using Grafana. Get started by using the Node Cert Exporter dashboard hosted at grafana.com.
All help in any form is highly appreciated and your are welcome participate in developing together. To contribute submit a Pull Request. If you want to provide feedback, open up a Github Issue or contact me personally.