Editing Training 2022 Linux team/ (section)

==Training session Tetra team on CDIL understanding. Dated 05 Nov 2022 - Tetra Support Staff - Biswajit Banerjee==

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'''Video summary:''' [MIXED/PARTIAL TRANSCRIPT QUALITY - patchy throughout with long silent gaps] "Training session Tetra team on CDIL understanding" -- an architecture discovery/handoff session for client CDIL, similar in format to the ISGEC session on this same page. The presenter explains that unlike other clients, CDIL's environment wasn't handed over with documentation -- the team had to independently discover what existed (mail, "Diamond" application, backup setup) rather than being briefed on it, describing this as a first-time situation requiring active reverse-engineering of the architecture rather than a walkthrough of known documentation. Covers a Chandigarh/Shimla dual-location setup (two servers with fixed IPs that can't be changed, one acting as a base/primary server), TetraControl as the monitoring/chat platform used to track this and other environments, and an application running on Tomcat as its backend (traffic hits an Nginx/proxy layer in front, which forwards to Tomcat, rather than users hitting the app server directly). Also touches on a disk-space risk -- a log or data directory at risk of filling up, where clearing it would resolve the space issue but at the cost of taking the affected service down, so it's treated as a last-resort fix rather than routine maintenance. Given how patchy the transcript is throughout, this summary reflects only the clearly identifiable topics, not a complete architecture walkthrough.