Hi,
I'm using 'nginx/1.21.1' for load balancing TCP connection for DBs like Teradata, Netezza, Oracle and MySQL. I'm using stream directive for it as per the guidance 'https://docs.nginx.com/nginx/admin-guide/load-balancer/tcp-udp-load-balancer/' . Following is my stream configuration (/etc/nginx/nginx.conf) stream { log_format timed_combined '$remote_addr - [$time_local] $session_time $msec $status $protocol ua="$upstream_addr" "$upstream_connect_time" "$upstream_response_time"'; access_log /var/log/nginx/access.log timed_combined; upstream stream_backend_mysql { hash $remote_addr; server 192.168.122.251:3306; server 192.168.122.252:3306; } server { listen 3306; proxy_pass stream_backend_mysql; proxy_connect_timeout 1s; } } I'm able to establish connection for mysql in this setup, but when I'm adding the log_format directive nginx is giving following error, 'nginx: [emerg] unknown "upstream_response_time" variable' My motive is to get metrics for this nginx tcp loadbalancer (like requests per seconds, number of active connections). Please guide me on this as I'm a newbie in this field. I'm attaching my nginx.conf for your reference with this mail. Looking forward for your response. Thank you in anticipation! Regards, Akki
nginx.conf
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