摘要：AbstractWeb-based online laboratories are easy-access and non-intrusive for online experimentation, which play a key role in online learning and distance education. For web-based online laboratories, the server-side deployment is vital to provide continuous and stable experimental services which are important features of online laboratories. This paper explores the re-deployment of two versions of a web-based online laboratory, the NCSLab system, with the leverage of the NGINX reverse proxy. With proper configuration, the deployed NGINX server enables a modular backend that can integrate different backend technologies such as Tomcat, PHP and file servers together. To support secure access, only one HTTPS certificate is required to be installed on the NGINX proxy server to support the two systems. The proposed methodology provides solutions for server re-deployment without the change of previous network topology. Moreover, the re-deployment is cost-effective for enabling the re-use of the previous domain name, standard HTTP and HTTPS ports as well as the HTTPS certificate.
