Yohann
By:
Yohann

Certbot nginx plugin could not open file

November 30, 2017 129 views
Let's Encrypt Nginx Ubuntu 16.04

Hello,

I have a simple personal website yohannparis.com that I want to make HTTPS.

I setup my Nginx server block following this tutorial:
https://www.digitalocean.com/community/tutorials/how-to-set-up-nginx-server-blocks-virtual-hosts-on-ubuntu-16-04

And I followed this tutorial to install Let's Encrypt on my server block:
https://www.digitalocean.com/community/tutorials/how-to-set-up-let-s-encrypt-with-nginx-server-blocks-on-ubuntu-16-04

Everything worked like a charm, up to Step 4 where the following command:

sudo certbot --nginx -d yohannparis.com -d www.yohannparis.com

return this:

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Could not open file: /etc/nginx/sites-enabled/yohannparis.com
Plugins selected: Authenticator nginx, Installer nginx
Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org
Obtaining a new certificate
Performing the following challenges:
tls-sni-01 challenge for yohannparis.com
tls-sni-01 challenge for www.yohannparis.com
Cleaning up challenges
Could not open file: /etc/nginx/sites-enabled/yohannparis.com
Cannot find a VirtualHost matching domain yohannparis.com. In order for Certbot to correctly perform the challenge please add a corresponding server_name directive to your nginx configuration: https://nginx.org/en/docs/http/server_names.html

I checked the permissions on my server block file in /etc/nginx/ but it all look good:

.
├── [drwxr-xr-x]  conf.d
[...]
├── [drwxr-xr-x]  sites-available
│   ├── [-rw-r--r--]  default
│   └── [-rw-r--r--]  yohannparis.com
├── [drwxr-xr-x]  sites-enabled
│   └── [lrwxrwxrwx]  yohannparis.com -> sites-available/yohannparis.com
[...]

I tried to access the log on /var/log/letsencrypt, but it wasn't helpful:

2017-11-29 21:03:32,206:DEBUG:certbot.error_handler:Calling registered functions
2017-11-29 21:03:32,206:INFO:certbot.auth_handler:Cleaning up challenges
2017-11-29 21:03:32,478:WARNING:certbot_nginx.parser:Could not open file: /etc/nginx/sites-enabled/yohannparis.com
2017-11-29 21:03:33,529:DEBUG:certbot.log:Exiting abnormally:
Traceback (most recent call last):
  File "/usr/bin/certbot", line 11, in <module>
    load_entry_point('certbot==0.19.0', 'console_scripts', 'certbot')()
  File "/usr/lib/python2.7/dist-packages/certbot/main.py", line 861, in main
    return config.func(config, plugins)
  File "/usr/lib/python2.7/dist-packages/certbot/main.py", line 698, in run
    certname, lineage)
  File "/usr/lib/python2.7/dist-packages/certbot/main.py", line 85, in _get_and_save_cert
    lineage = le_client.obtain_and_enroll_certificate(domains, certname)
  File "/usr/lib/python2.7/dist-packages/certbot/client.py", line 357, in obtain_and_enroll_certificate
    certr, chain, key, _ = self.obtain_certificate(domains)
  File "/usr/lib/python2.7/dist-packages/certbot/client.py", line 318, in obtain_certificate
    self.config.allow_subset_of_names)
  File "/usr/lib/python2.7/dist-packages/certbot/auth_handler.py", line 74, in get_authorizations
    resp = self._solve_challenges()
  File "/usr/lib/python2.7/dist-packages/certbot/auth_handler.py", line 115, in _solve_challenges
    resp = self.auth.perform(self.achalls)
  File "/usr/lib/python2.7/dist-packages/certbot_nginx/configurator.py", line 767, in perform
    sni_response = chall_doer.perform()
  File "/usr/lib/python2.7/dist-packages/certbot_nginx/tls_sni_01.py", line 55, in perform
    vhost = self.configurator.choose_vhost(achall.domain)
  File "/usr/lib/python2.7/dist-packages/certbot_nginx/configurator.py", line 242, in choose_vhost
    "https://nginx.org/en/docs/http/server_names.html") % (target_name))
MisconfigurationError: Cannot find a VirtualHost matching domain yohannparis.com. In order for Certbot to correctly perform the challenge please add a corresponding server_name directive to your nginx configuration: https://nginx.org/en/docs/http/server_names.html

I changed my server block file permissions to 777, but to no effect!

Where can I found a solution to this issue?

Thank you for your help.
Yohann Paris

2 comments
  • Hi, can you please post the output of the following command? It tests the Nginx config and outputs the result—I'm suspecting that Certbot is able to open the file but not parse it properly.

    sudo nginx -t
    
  • I tried sudo nginx -t before, but everything is fine:

    nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
    nginx: configuration file /etc/nginx/nginx.conf test is successful
    

    I also run sudo nginx -s reload to be sure.

    For information here is the content of my server bloc:

    server {
        listen 80;
            listen [::]:80 ipv6only=on;
    
            root /var/www/yohannparis.com/html;
            index index.html index.php;
        autoindex off;
    
            server_name *.yohannparis.com;
    
            location / {
                    try_files $uri $uri/ =404;
            autoindex off;
            }
    
            location ~ /\.ht {
                    deny all;
            }
    }
    
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