NGINX logging

nginx.conf

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

    log_format json_combined escape=json
    '{'
      '"time_local":"$time_local",'
      '"remote_addr":"$http_x_forwarded_for",'
      '"remote_user":"$remote_user",'
      '"request":"$request",'
      '"status": "$status",'
      '"host": "$http_host",'
      '"body_bytes_sent":"$body_bytes_sent",'
      '"request_time":"$request_time",'
      '"http_referrer":"$http_referer",'
      '"http_user_agent":"$http_user_agent"'
    '}';