s#__SSL_KEY_AWS_SECRET_NAME__#${SSL_KEY_AWS_SECRET_NAME}#g;
s#__CONTROLLER_MAX_WORKERS__#${CONTROLLER_MAX_WORKERS:-}#g;
s#__CONTROLLER_MAX_QUEUED_REQUESTS__#${CONTROLLER_MAX_QUEUED_REQUESTS:-128}#g;
+ s#__CONTROLLER_MAX_GATEWAY_TUNNELS__#${CONTROLLER_MAX_GATEWAY_TUNNELS:-1000}#g;
s#__MONITORING_USERNAME__#${MONITORING_USERNAME}#g;
s#__MONITORING_EMAIL__#${MONITORING_EMAIL}#g;
s#__MONITORING_PASSWORD__#${MONITORING_PASSWORD}#g;