Letsencrypt automated request and renewal (with cloudflare implementation).

Dependencies

Thanks to these really useful projects:

Installation

Base script

#### Install

mkdir /opt/letsencrypt.sh
cd /opt/letsencrypt.sh && git clone https://github.com/lukas2511/dehydrated.git

First launch and terms agreements

The first launch will output you

# INFO: Using main config file config

To use dehydrated with this certificate authority you have to agree to their terms of service which you can find here: https://letsencrypt.org/documents/LE-SA-v1.1.1-August-1-2016.pdf

To accept these terms of service run `./dehydrated --register --accept-terms`.

So run the following to accept terms

cd /opt/letsencrypt.sh/dehydrated && ./dehydrated --register --accept-terms

Letsencrypt Cloudflare hooks (skip if you don't use Cloudflare)

Install

cd /opt/letsencrypt.sh/dehydrated
git clone https://github.com/kappataumu/letsencrypt-cloudflare-hook hooks/cloudflare
sudo apt-get install build-essential libssl-dev libffi-dev python-dev
pip install --upgrade pip
pip install -r hooks/cloudflare/requirements-python-2.txt
# Or for python 3
pip install -r hooks/cloudflare/requirements.txt
pip install pyopenssl

Note: If you have any trouble installing requirements with pip

export LC_ALL="en_US.UTF-8"
export LC_CTYPE="en_US.UTF-8"
sudo dpkg-reconfigure locales

Config

Put this content in "config" file in cd /opt/letsencrypt.sh/dehydrated, replace by the correct values.

export CF_EMAIL='user@example.com'
export CF_KEY='K9uX2HyUjeWg5AhAb'

One time usage (testing installation)

With Cloudflare implementation

cd /opt/letsencrypt.sh/dehydrated && ./dehydrated -f config -c -d <yourdomain.com> -d <sub1.yourdomain.com> -d <sub2.yourdomain.com> -t dns-01 -k 'hooks/cloudflare/hook.py' -o </your/certificates/path>

Without Cloudflare implementation

cd /opt/letsencrypt.sh/dehydrated && ./dehydrated -f config -c -d <yourdomain.com> -d <sub1.yourdomain.com> -d <sub2.yourdomain.com> -t dns-01 -o </your/certificates/path>

Now making an automatic renewal with cron

Creating a script called by the crontab, add the following content to /opt/letsencrypt.sh/cron.sh Note: Remove "-k 'hooks/cloudflare/hook.py'" if you don't use Cloudflare

#!/usr/bin/env bash

cd /opt/letsencrypt.sh/dehydrated && ./dehydrated -f config -c -d <yourdomain.com> -d <sub1.yourdomain.com> -d <sub2.yourdomain.com> -t dns-01 -k 'hooks/cloudflare/hook.py' -o </your/certificates/path>

Make this executable

chmod +x /opt/letsencrypt.sh/cron.sh

Creating the log folder

mkdir /var/log/letsencrypt.sh/

Add this line in the crontab

0 1 * * * /opt/letsencrypt.sh/cron.sh >> /var/log/letsencrypt.sh/cron.log 2>&1

You will probably have to reload your http service right after.