# Certbot renew, passenger and nginx **URL:** \ **Category:** Server\ **Created:** [July 13, 2018, 2:46pm UTC](https://community.letsencrypt.org/t/certbot-renew-passenger-and-nginx/66664 "2018-07-13T14:46:38Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![SteveRedka](https://avatars.discourse-cdn.com/v4/letter/s/a183cd/32.png) [@SteveRedka](https://community.letsencrypt.org/u/SteveRedka)\ **Post date:** [July 13, 2018, 2:46pm UTC](https://community.letsencrypt.org/t/certbot-renew-passenger-and-nginx/66664/1 "2018-07-13T14:46:38Z")
Certbot tries to restart nginx whenever I ask it to renew certificates. I think it tries to treat it like it would treat nginx installed with apt-get, and it fails. Passenger installs nginx into different directory (`/opt/nginx/sbin/nginx`), so I think this may be the problem. This is how error looks like: ```auto $ sudo certbot renew --dry-run # --post-hook "/etc/init.d/nginx restart" Saving debug log to /var/log/letsencrypt/letsencrypt.log ------------------------------------------------------------------------------- Processing /etc/letsencrypt/renewal/myapplication .com.conf ------------------------------------------------------------------------------- Cert not due for renewal, but simulating renewal for dry run Plugins selected: Authenticator nginx, Installer nginx Renewing an existing certificate Performing the following challenges: http-01 challenge for myapplication .com http-01 challenge for www.myapplication .com nginx: [error] invalid PID number "" in "/run/nginx.pid" Cleaning up challenges nginx: [error] invalid PID number "" in "/run/nginx.pid" Encountered exception during recovery: Traceback (most recent call last): File "/usr/lib/python3/dist-packages/certbot/auth_handler.py", line 75, in handle_authorizations resp = self._solve_challenges(aauthzrs) File "/usr/lib/python3/dist-packages/certbot/auth_handler.py", line 126, in _solve_challenges resp = self.auth.perform(all_achalls) File "/usr/lib/python3/dist-packages/certbot_nginx/configurator.py", line 1048, in perform self.restart() File "/usr/lib/python3/dist-packages/certbot_nginx/configurator.py", line 858, in restart nginx_restart(self.conf('ctl'), self.nginx_conf) File "/usr/lib/python3/dist-packages/certbot_nginx/configurator.py", line 1118, in nginx_restart "nginx restart failed:\n%s\n%s" % (out.read(), err.read())) certbot.errors.MisconfigurationError: nginx restart failed: b'' b'' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib/python3/dist-packages/certbot/error_handler.py", line 108, in _call_registered self.funcs[-1]() File "/usr/lib/python3/dist-packages/certbot/auth_handler.py", line 310, in _cleanup_challenges self.auth.cleanup(achalls) File "/usr/lib/python3/dist-packages/certbot_nginx/configurator.py", line 1067, in cleanup self.restart() File "/usr/lib/python3/dist-packages/certbot_nginx/configurator.py", line 858, in restart nginx_restart(self.conf('ctl'), self.nginx_conf) File "/usr/lib/python3/dist-packages/certbot_nginx/configurator.py", line 1118, in nginx_restart "nginx restart failed:\n%s\n%s" % (out.read(), err.read())) certbot.errors.MisconfigurationError: nginx restart failed: b'' b'' Attempting to renew cert (myapplication .com) from /etc/letsencrypt/renewal/myapplication .com.conf produced an unexpected error: nginx restart failed: b'' b''. Skipping. All renewal attempts failed. The following certs could not be renewed: /etc/letsencrypt/live/myapplication .com/fullchain.pem (failure) ------------------------------------------------------------------------------- ** DRY RUN: simulating 'certbot renew' close to cert expiry ** (The test certificates below have not been saved.) All renewal attempts failed. The following certs could not be renewed: /etc/letsencrypt/live/myapplication .com/fullchain.pem (failure) ** DRY RUN: simulating 'certbot renew' close to cert expiry ** (The test certificates above have not been saved.) ------------------------------------------------------------------------------- 1 renew failure(s), 0 parse failure(s) ``` Is there a workaround for that? ---
**Author:** ![stevenzhu](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/stevenzhu/32/18864_2.png) [@stevenzhu](https://community.letsencrypt.org/u/stevenzhu)\ **Post date:** [July 13, 2018, 4:51pm UTC](https://community.letsencrypt.org/t/certbot-renew-passenger-and-nginx/66664/2 "2018-07-13T16:51:54Z")
Hi, Do you happen to have two set of Nginx installed? (E.x. one from default yum or apt-get, another one from passdgnger?) Thank you ---
**Author:** ![SteveRedka](https://avatars.discourse-cdn.com/v4/letter/s/a183cd/32.png) [@SteveRedka](https://community.letsencrypt.org/u/SteveRedka)\ **Post date:** [July 13, 2018, 5:28pm UTC](https://community.letsencrypt.org/t/certbot-renew-passenger-and-nginx/66664/3 "2018-07-13T17:28:19Z")
I did. Actually, I had three: one from passenger and two from apt packages (nginx and nginx-common). However, I already removed them before asking this question. ---
**Author:** ![schoen](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/schoen/32/79_2.png) [@schoen](https://community.letsencrypt.org/u/schoen)\ **Post date:** [July 13, 2018, 6:30pm UTC](https://community.letsencrypt.org/t/certbot-renew-passenger-and-nginx/66664/4 "2018-07-13T18:30:28Z")
Perhaps these options will help you: ```auto --nginx-server-root NGINX_SERVER_ROOT Nginx server root directory. (default: /etc/nginx or /usr/local/etc/nginx) --nginx-ctl NGINX_CTL Path to the 'nginx' binary, used for 'configtest' and retrieving nginx version number. (default: nginx) ``` ---
**Author:** ![system](https://global.discourse-cdn.com/letsencrypt/original/3X/c/a/ca6c06ea1ea201324bba7048c6841ce60236468d.png) [@system](https://community.letsencrypt.org/u/system)\ **Post date:** [August 12, 2018, 6:30pm UTC](https://community.letsencrypt.org/t/certbot-renew-passenger-and-nginx/66664/5 "2018-08-12T18:30:32Z")
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