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docker-easy-haproxy/docs/letsencrypt.md

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# Letsencrypt
EasyHAProxy can issue a letsencrypt certificate. Follow the steps below:
## Setting up EasyHAProxy
Run the EasyHAProxy container:
```bash
docker run \
... \
-e EASYHAPROXY_CERTBOT_EMAIL=john@doe.com \
-p 80:80 \
-p 443:443 \
-v /path/to/guest/certbot/certs:/certs/certbot \
... \
byjg/easy-haproxy
```
Notes:
- If you don't setup `EASYHAPROXY_CERTBOT_EMAIL` environment variable, EasyHAProxy will fail silently and **will not request** a certificate.
- The ports 80 and 443 needs to accessible through the internet as [Let's Encrypt requirement](https://letsencrypt.org/docs/allow-port-80/)
Be aware of Letsencrypt issue rate limits:
- https://letsencrypt.org/docs/duplicate-certificate-limit/
- https://letsencrypt.org/docs/rate-limits/
In order to avoid several certificate issuing,
**It is required you to persist the container folder `/certs/certbot` outside the container.**
You cannot delete or change it contents.
If you do not persist, or change/delete the contents, Let's encrypt will not work properly.
## Setting up your container to use Let's Encrypt
```bash
docker run \
... \
--label easyhaproxy.express.port=80 \
--label easyhaproxy.express.localport=3000 \
--label easyhaproxy.express.host=example.org \
--label easyhaproxy.express.certbot=true \
... \
some/myimage
```
Requirements:
- Your container **must** listen to port 80. Letsencrypt will not issue the certificate if `easyhaproxy.<definition>.port` is in another port, and EasyHAProxy will fail silently.
- You cannot set port 443 for the container with the Letsencrypt because EasyHAProxy will create this port automatically once the certificate is issued.
----
[Open source ByJG](http://opensource.byjg.com)