I am running two instances of Nextcloud 12.0.0 on a Tech and Me virtual appliance.
At the beginning of June on both instances /var/scripts/letsencryptrenew.sh started to fail to auto renew SSL certificate.
Let’s Encrypt SUCCESS!–2017-04-09_00:00
Let’s Encrypt SUCCESS!–2017-04-16_00:00
Let’s Encrypt SUCCESS!–2017-04-23_00:00
Let’s Encrypt SUCCESS!–2017-04-30_00:00
Let’s Encrypt SUCCESS!–2017-05-07_00:00
Let’s Encrypt SUCCESS!–2017-05-14_00:00
Let’s Encrypt SUCCESS!–2017-05-21_00:00
Let’s Encrypt SUCCESS!–2017-05-28_00:00
Let’s Encrypt FAILED!–2017-06-04_00:00
Let’s Encrypt FAILED!–2017-06-11_00:00
Let’s Encrypt FAILED!–2017-06-18_00:00
Let’s Encrypt FAILED!–2017-06-25_00:00
Errors from /var/log/letsencrypt/letsencrypt.log
2017-06-27 16:06:48,166:WARNING:certbot.renewal:Attempting to renew cert from /etc/letsencrypt/renewal/domain.name.conf produced an unexpected error: Could n$
2017-06-27 16:06:48,168:DEBUG:certbot.renewal:Traceback was:
Traceback (most recent call last):
File “/usr/lib/python2.7/dist-packages/certbot/plugins/standalone.py”, line 271, in _handle_perform_error
PluginError: Could not bind TCP port 443 because it is already in use by another process on this system (such as a web server). Please stop the program in question and then try again…
2017-06-27 16:06:48,169:DEBUG:certbot.log:Exiting abnormally:
Error: 1 renew failure(s), 0 parse failure(s)
Any help in identifying the root cause is appreciated.