The nginx log exporter allows exporting requests stats from nginx JSON logs to Prometheus.
make
./nginxlog_exporter <flags>
docker build -t nginxlog_exporter .
docker run -d -p 9117:9117 --name nginxlog_exporter -v /var/log/nginx:/var/log/nginx:ro nginxlog_exporter -file.pattern "/var/log/nginx/*.log"