Operations grimoire/TLS certificates
SSL certificates should be used for every service we provide.
Let's encrypt commands
2016-07-31 utility rename. Client upgraded on Ysul. New client name is certbot, not anymore letsencrypt.
acme-v02 migration. If you've a complaint acme-v01.api. isn't available, add --server https://acme-v02.api.letsencrypt.org/directory.
Generate a certificate
Devserver role, for example Ysul or WindRiver (/var/letsencrypt-auto folder) :
certbot certonly -a webroot --webroot-path=/var/letsencrypt-auto -d foo.nasqueron.org
Dwellers (container will use /www):
certbot certonly --server https://acme-v02.api.letsencrypt.org/directory -a webroot --webroot-path=/www -d bar.nasqueron.org
Generate a certificate for several sites
-d foo.nasqueron.org -d bar.nasqueron.org
If a certificate for foo already existed, it will offer to extend it to a new alternative name, which is probably a good idea.
Renew all certificates
Ysul: certbot renew
Dwellers: letsencrypt renew
Installation on nginx
Allow Let's encrypt validation
Serve SSL certificate
Special considerations
New server
Let's encrypt client is available on Ysul (natively) and Dwellers (as a wrapper script for a Docker container).
Fill a task in Servers component, subscribe Sandlayth and Dereckson to deploy it on a new server.
A salt state would be nice for such purpose.
Internationalized domain names
Punycode conversion
Both for web server configuration and certificate authority, name must be converted to Punycode (RFC 3492): https://www.punycoder.com/
Let's encrypt support
Let's encrypt has supported IDN since 2016[1]. We use it for dægrefn.nasqueron.org certificate.
Previously, they were afraid: attackers could register a domain with a Cyrillic character matching a real domains. As some people consider it's the responsibility of the CA to mitigate such risks, the feature has been several times postponed.
StartSSL
StartSSL is not in activity anymore. It was used at Nasqueron when Let's Encrypt didn't support IDN.
