docker-adsb-ultrafeeder/rootfs/etc/s6-overlay/startup.d/99-prometheus-conf

#!/command/with-contenv bash
#shellcheck shell=bash disable=SC1091

source /scripts/common

if ! chk_enabled "$PROMETHEUS_ENABLE"; then
    exit 0
fi

# serve port 9274 always replying with stats.prom regardless of requested path

cat > /etc/nginx/sites-enabled/prometheus_9274 <<EOF
server {
    listen 9274 default_server;
    root /var/www/html;
    server_name _;
    location /metrics {
        alias /run/readsb/stats.prom;
    }
    location / {
        alias /run/readsb/stats.prom;
        rewrite (.*) /metrics last;
    }
}
EOF