I get successful deployment for all three servers, but then a warning:
nginx restart failed:
nginx: [emerg] a duplicate listen 0.0.0.0:443 in /usr/local/etc/nginx/nginx.conf:41
I'm not sure what to do next. I don't see where the duplicate entries are. I'm listening for three different domains on the same port and they redirect to three different servers. Both ports 80 and 443 are open.
I've moved your post to a separate topic because ... that's just how we do things here.
There can only be one "solution" response to any topic and your problem [allbeit very similar] might have a different solution.
I'm not versed in MAC.
Can you show what service is using port 80 443?
If you had originally started a new Help Topic you would have been presented with the following.
Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My domain is:
I ran this command:
It produced this output:
My web server is (include version):
The operating system my web server runs on is (include version):
My hosting provider, if applicable, is:
I can login to a root shell on my machine (yes or no, or I don't know):
I'm using a control panel to manage my site (no, or provide the name and version of the control panel):
The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):
Thank you all very much for the post guidelines and help. I've followed the advice by @_az and changed the listening port to 80. This has indeed worked, and added the listen 443 directive as well as the certificate paths to all three domains. However, when I now do sudo nginx -t && nginx -s reload, I get this:
nginx: the configuration file /usr/local/etc/nginx/nginx.conf syntax is ok
nginx: configuration file /usr/local/etc/nginx/nginx.conf test is successful
nginx: [emerg] cannot load certificate "/etc/letsencrypt/live/example.com/fullchain.pem": BIO_new_file() failed (SSL: error:0200100D:system library:fopen:Permission denied:fopen('/etc/letsencrypt/live/example.com/fullchain.pem','r') error:2006D002:BIO routines:BIO_new_file:system lib)
nginx: configuration file /usr/local/etc/nginx/nginx.conf test failed