Control and monitoring system for the Greenland telescope: computers, network and software

We describe the control and monitoring system for the Greenland Telescope(GLT). The GLT is a 12-m radio telescopeaiming to carry out the sub-millimeter Very Long Baseline Interferometry(VLBI) observations and image the shadow of the super massive black hole in M87. In November 2017 construction has been finished and commissioning activity has been started. In April 2018 we participated in the VLBI observing campaign for the Event Horizon Telescope(EHT) collaboration. In this paper we present the entire GLT control/monitoring system in terms of computers, network and software.