I am new to NGINX and trying to setup a simple load balancer for HTTPS application traffic.

My health checks are failing and the VIP is showing a 502 error when loading the page.

My current config file:

    upstream app-backend {
        server app.website.com:443;
        server app2.website.com:443;
        zone app-backend 64k;
}

server {
        listen x.x.x.x:443 ssl;
        ssl_certificate                 /etc/nginx/ssl/website.com/server.crt;
        ssl_certificate_key             /etc/nginx/ssl/website.com/server.key;

        location / {
                proxy_pass http://appp-backend;
                health_check interval=10  fails=3 passes=2;
        }
}

When going to my Dashboard and refreshing the page, I notice the SSL handshake failing with every refresh to https://x.x.x.x.website.com

my nginx.conf file:

user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/error.log notice;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

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

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;
    #keepalive_timeout  65;
    #gzip  on;

    include /etc/nginx/conf.d/*.conf;

}