To use this tool you need to have a valid domain name. This tool doesn't support acme DNS challenges.
Concert is a console based certificate generating tool using letsencrypt, built using really simple ACME library.
You need to have golang installed to compile concert.
$ go get -u github.com/minio/concert
Generates certs in certs directory by default.
$ sudo concert gen <EMAIL> <DOMAIN>
Generate certificates in custom directory.
$ sudo concert gen --dir my-certs-dir <EMAIL> <DOMAIN>
Renew certificates in certs directory by default.
$ sudo concert renew <EMAIL>
Generate certificates in custom directory.
$ sudo concert renew --dir my-certs-dir <EMAIL>
Run a server with automatic renewal.
$ sudo concert server <EMAIL> <DOMAIN>
Concert requires root on all platforms other than Linux. On linux you can use setcap permissions to allow concert to have permissions to bind ports.
setcap cap_net_bind_service=+ep `which concert`