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Operation and status of computers in teaching laboratories can significantly influence motivation and expectation of students, thus resulting in a reduction of their academic progress. To address this issue, this paper presents a complete deployment, management, and maintenance tool for operating systems (OS) called OpenGnSys. As part of a larger educational project, OpenGnSys has been tested in a real computer lab with the aim of improving teaching and learning in classroom. OpenGnSys provides an easy and intuitive way to administrate labs from a graphical user console with remote backup functions. Its design comprises a two-node high availability cluster for both hardware infrastructure and computer services, thus ensuring the availability of essential lab equipment. Additionally, this paper proposes a methodology for the installation, maintenance and quality control for computers and laboratory …