Certificate Signer Server

This is a simple Go application that acts as a Certificate Signer server. It provides an HTTP endpoint for signing Certificate Signing Requests (CSRs).

Requirements

Server won't start without cert key and cert file in PEM format. (check the Configuration section)

Usage

To run the server, you can use Docker or build and run it locally. Server need to have specified Here are the steps:

Docker (Recommended) [WIP: Docker not configured yet]

1. Build the Docker image:

   docker build -t my-ca-server .
   

2. Run the Docker container:

   docker run -p 80:80 my-certificate-signer
   

Local Build

1. Clone the repository:

   git clone https://github.com/Nebojsa92/certificate-signer.git
   cd certificate-signer
   

2. Download dependencies and build the Go application:

   go mod download
   go build
   

3. Run the binary:

   ./certificateSigner
   

Configuration

You can configure the CA server using environment variables:

Environment variable	Description
CA_CERT_FILE	Path to the CA certificate file (default: ca-cert.pem).
CA_KEY_FILE	Path to the CA private key file (default: ca-key.pem).
PORT	Port on which the server listens (default: 80).

Endpoints

Endpoint	Description
/csr	HTTP endpoint for submitting Certificate Signing Requests (CSRs).
/metrics	Prometheus metrics endpoint for monitoring.

Prometheus Metrics

The server exports the following Prometheus metrics:

Metric	Description
http_requests_total	Total number of HTTP requests with labels for HTTP method and response code.