![]() Easiest way to do that is to use the same user account to run dehydrated as you do for Ansible. (note that the user that runs this needs to have permissions to read the certificates that dehydrated generated. dehydrated_ssl_certs=''Įxecute the playbook with: ansible-playbook -i production web-nginx-servers.yml “b3n.org” matches the primary name of the certificate, found in /etc/dehydrated/certs/ Here’s an example of an Ansible Playbook which could be called daily to copy certs to all web-servers and reload nginx if the certs were updated or renewed:Ĭreate a file web-servers-nginx.yml - hosts: web-servers-nginxĪdd the below to your Ansible inventory file (mine is namned ‘production’). You can configure an ansible playbook to run from a daily cron job to copy updated certificates to remote servers and automatically reload services if the certificates have been updated. To deploy the certs to the respective servers I suggest using an IT Automation tool like Ansible. It would be wise to run dehydrated -c from cron once or twice a day and let it renew certs as needed. The certificates will be valid for 90 days.įor subsequent runs letsencrypt.sh will check to see if the certificates have less than 30 days left and attempt to renew them. When validated the certs will be placed under the certs directory and from there you can distribute them to the appropriate applications. The first time you run it, it should get the challenge from Let’s Encrypt, and provision a DNS TXT record with the response. HOOK=/opt/letsencrypt-cloudflare-hook/hook.pyĮxport CF_EMAIL='your_cloudflware_acc 'Ĭreate an /etc/dehydrated/domains.txt file, something like this: ī3n.org The first four lines will each generate their respective certificates, the last line creates a multi-domain or SAN (Subject Alternate Name) cert with multiple entries in a single SSL certificate. In letsencrypt-cloudflare-hook/hook.py change the top line to point at python3: #!/usr/bin/env python3 Config FileĮdit the “/etc/dehydrated/config” file… add or uncomment the following lines: CHALLENGETYPE="dns-01" Pip3 install -r letsencrypt-cloudflare-hook/requirements.txt Here’s how to set up a CloudFlare hook as an example: cd /opt/ I’m sure there are other great DNS providers but I haven’t tried them. The access control, APIs, and advanced routing work great. It’s not free but usually ends up cheaper than most other options and is extremely robust. Route53 is one of the most advanced DNS providers. It is always the fastest DNS provider on DNSPerf, gets consistently low latency lookup times, and it’s free. ![]() If you need to pick a new provider with a proper API my favorite DNS Providers are Cloudflare DNS (free) and Amazon Route53 (small cost). If your DNS provider doesn’t have a hook available, you can write one against their API or switch to a provider that has one. Ln -s /opt/dehydrated/dehydrated /usr/local/bin/Īt this point, you need to install a hook for your DNS provider. Install dehydrated / letsencrypt.sh sudo suĬp docs/examples/domains.txt /etc/dehydrated Here’s a quick guide on Ubuntu 16.04, but it should work on any Linux distribution (or even FreeBSD). Lukas Schauer wrote dehydrated (formerly letsencrypt.sh) which can be used to automate the process. Now you can respond to a challenge by creating a TXT record in DNS. ACME DNS Challengeįortunately, Let’s Encrypt introduced the DNS-01 challenge in January of 2016. You may not even want external A records for these services, much less a web-server for validation. Or what if you’re trying to generate an SSL certificate for an intranet server Many homelabs, organizations and businesses need publicly signed SSL certs on internal servers. Generating Intranet SSL Certs Using DNS-01 Challengeīut what if you’re generating an SSL certificate for a mail server, or mumble server, or anything but a web server? You don’t want to spin up a web server just for certificate verification. Update: : Updated the post to change a few links that no longer existed to more relevant ones.Ĭertbot is great for public web-servers. ![]() Let’s Encrypt makes an http request and if it finds the response to the challenge it issues the cert. The way it normally works is using http-01 challenge… to respond to the Let’s Encrypt challenge the client (typically Certbot) puts an answer in the webroot. ".tls.Let’s Encrypt is an excellent service offering the ability to generate free SSL certs. ![]() ![]() "/docker/traefik/letsencrypt:/letsencrypt" "/docker/traefik/config:/etc/traefik:ro" "/var/run/docker.sock:/var/run/docker.sock:ro" I have tried to add DNS challenge for HTTPS with OVH, but I didn't understand why it doesn't work, because I have follow some documentation : ![]()
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