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Nginx with certbot is annoying to setup. Especially with HTTP challenge. Mostly because of a circular dependency. You need nginx to clear the challenge and once verboten gets a cert you need to reload nginx.

I switched to Lego because it has out of the box support for my domain registrar so I could use DNS instead of HTTP challenge. It’s also a single go binary which is much simpler to install than certbot.

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There is no circular dependency since the HTTP challenge uses unencrypted port 80 and not HTTPS. Reloading nginx config after cert updates is also not a problem as nginx can do that without any downtime.

There’s dependency in the nginx config. You have to specify where your certs are. So you have to have a working config before you start nginx, then you need to get certs and change config with the cert/key location before you can HUP nginx. This is extremely brittle, especially if you have a new box or a setup where you regularly bring up clean nodes as that’s when you can get all sorts of unexpected things to happen. It’s much less brittle when you already have a cert and a working config and just renew the certificate but not all setups are like that. I can’t even confidently say that most are like that.

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