go-gen-cert

Configuration

If you are on dev environment, like I've been doing, you must create .env file similar as .env.example in this repo:

VIPER_CONFIG=your-viper-file-name-without-extension
VIPER_CONFIG_TYPE=yaml
ENV=dev

Then add viper configuration file, yaml for example, in your root directory:

export_dir: "/home"
ca:
    serial_number: 12152 # serial number
    subject:
        organization: "yourdomain.com"
        common_name: "*.yourdomain.com"
    key_usage: 1
    ext_key_usage: 
        - 1
        - 2
        duration: 518400 #1 year
client:
    serial_number: 12151232 # serial number
    subject:
        organization: "yourdomain.com"
        country: "RM"
        province: "REML"
        locality: ""
        street_address: ""
        postal_code: ""
    subject_key_id:
        - 1
        - 2
        - 3
        - 4
        - 6
    key_usage: 1
    ext_key_usage: 
        - 1
        - 2
    duration: 518400

Execution

Then you can just run

go run main.go