Wednesday, September 2, 2020

It seems that I messed certain things up when trying to install the certificate for https://lets.lino-framework.org yesterday. Now I had a couple of hours to learn more about certbot. I updated the Using Certbot/Let's encrypt with Lino page and made some changes in getlino. Though I am still far from knowing everything…

How to see which Debian I am running:

$ lsb_release -a
No LSB modules are available.
Distributor ID:       Debian
Description:  Debian GNU/Linux 10 (buster)
Release:      10
Codename:     buster

https://certbot.eff.org/lets-encrypt/debianbuster-nginx

$ sudo apt-get install certbot python-certbot-nginx
Reading package lists... Done
Building dependency tree
Reading state information... Done
certbot is already the newest version (0.31.0-1).
python-certbot-nginx is already the newest version (0.31.0-1).
0 upgraded, 0 newly installed, 0 to remove and 124 not upgraded.

A “messy certificate” is a certificate that covers a domain which is already covered by another certificate. How to find messy certificates?

I deleted a few of them using:

$ certbot-auto delete --cert-name team.new.lino-framework.org
Requesting to rerun /usr/local/bin/certbot-auto with root privileges...
Saving debug log to /var/log/letsencrypt/letsencrypt.log

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Deleted all files relating to certificate team.new.lino-framework.org.
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(master) luc@lf:/usr/bin$

How can I see all certificates that cover a given domain?

TODO

How to see all enabled sites and the certificate they use:

$ cd /etc/nginx/sites-enabled
$ grep ssl_certificate_key *

How to maintain the list of domains in a separate file.

Let’s say you have a certificate named example.com

Create a file named ~/domains.txt with one line per domain, each line starts with -d:

-d example.com
-d www.example.com
-d sub1.example.com
...
-d sub9.example.com

You can now always update this file and then run the following to updated your certificate:

$ xargs -a ~/domains.txt certbot-auto certonly --cert-name example.com