upstream ppanel_backend {
    server MASTER_SERVER_IP:8080 max_fails=3 fail_timeout=10s;
    server REPLICA_SERVER_IP:8080 max_fails=3 fail_timeout=10s;
}

server {
    listen 443 ssl http2;
    server_name api.example.com;

    location / {
        proxy_pass http://ppanel_backend;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}