Analyze Nginx's access logs with goaccess
Show all statistics
sudo zcat /var/log/nginx/*.access.log.* | goaccess --log-format=COMBINED
Show server errors
sudo zcat /var/log/nginx/*.access.log.* | awk '$9~/500/' | goaccess --log-format=COMBINED
sudo zcat /var/log/nginx/*.access.log.* | goaccess --log-format=COMBINED
sudo zcat /var/log/nginx/*.access.log.* | awk '$9~/500/' | goaccess --log-format=COMBINED