Thanks for the help.
That got me past GATHERING FACTS, where it was failing before, but now it fails here:
RUNNING HANDLER [common : reload nginx]
****************************************************
System info:
Ansible 2.4.0.0; Darwin
Trellis 1.0.0: December 27th, 2018
---------------------------------------------------
non-zero return code
nginx: [emerg]
SSL_CTX_use_PrivateKey_file("/etc/nginx/ssl/letsencrypt/site.com.key")
failed (SSL: error:0B080074:x509 certificate
routines:X509_check_private_key:key values mismatch)
nginx: configuration file /etc/nginx/nginx.conf test failed
fatal: [xxx.xx.xxx.xxx]: FAILED! => {"changed": true, "cmd": ["nginx", "-t"], "delta": "0:00:00.012474", "end":
"2019-01-09 16:55:20.382254", "failed": true, "rc": 1, "start": "2019-01-09 16:55:20.369780", "stderr_lines":
["nginx: [emerg] SSL_CTX_use_PrivateKey_file(\"/etc/nginx/ssl/letsencrypt/site.com.key\") failed (SSL:
error:0B080074:x509 certificate routines:X509_check_private_key:key values mismatch)", "nginx:
configuration file /etc/nginx/nginx.conf test failed"], "stdout": "", "stdout_lines": []}