Installation

$ gem install letsencrypt_standalone

Usage

config file like this:

{
  "path": "./",
  "ssl_dir": "ssl_certs", //relative to "path"
  "email": "admin@example.com",
  "domains": [
    {
      "host": "example.com"
    }
  ]
}

Full config example:

{
  "path": "./",
  "ssl_dir": "ssl_certs", //relative to "path"
  "email": "admin@example.com", //let's encrypt account email
  "domains": [
    {
      "host": "example.com", // fqdn 
      // private key, will be generated automatically if the field does not exist
      "private_key": "private_key.pem",
      // Certificates files. if exists fullchain.pem will be used to check expiration date.
      // New certificates will be automatically obtained when expiration date comes in 2 two days 
      "certificates": { 
        "certificate": "cert.pem",
        "chain": "chain.pem",
        "fullchain": "fullchain.pem"
      }
    }
  ],
  "account": "account.pem" // let's encrypt account key. Will be automatically generated if the field not exists
}

Run

le_standalone -h

choose acme backend

LE_ENVIRONMENT=staging // if the variable doesn't exist will be used production backend

Certificate auto update

Just run le_standalone -c CONFIG_FILE_PATH. If certificates are going to expire soon, the new ones will be obtained automatically.