log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for" '
'$upstream_addr "$upstream_response_time"';

root# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

66.249.93.45 - - [27/Dec/2016:15:52:17 +0500] "GET /products HTTP/1.1" 301 185 "-" "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko; Google Page Speed Insights) Chrome/27.0.1453 Mobile Safari/537.36" "178.20.235.164" "-"
94.77.88.169 - - [27/Dec/2016:15:54:21 +0500] "GET /products HTTP/1.1" 301 185 "-" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36" "-" - "-"
94.77.115.174 - - [27/Dec/2016:15:54:22 +0500] "GET / HTTP/1.1" 301 185 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36" "-" - "-"
178.20.235.164 - - [27/Dec/2016:15:54:22 +0500] "GET /robots.txt HTTP/1.1" 301 185 "-" "RookeeBot" "-" - "-"
66.249.93.43 - - [27/Dec/2016:15:54:23 +0500] "GET /products HTTP/1.1" 301 185 "-" "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko; Google Page Speed Insights) Chrome/27.0.1453 Mobile Safari/537.36" "178.20.235.164" - "-"
163.172.67.180 - - [27/Dec/2016:15:54:34 +0500] "GET / HTTP/1.1" 301 185 "-" "Mozilla/5.0 (Windows NT 5.1; rv:7.0.1) Gecko/20100101 Firefox/7.0.1" "-" - "-"

Вот что получилось. То пишет адрес, то нет. Не понятен результат.