Editing Training 2022 Linux team/ (section)

==Training session Tetra team on Isgec samba Nextcloud understanding. Dated 27 Oct 2022 - Tetra Support Staff - Biswajit Banerjee==

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'''Video summary:''' "Training session Tetra team on Isgec samba Nextcloud understanding" -- an architecture-and-handoff training session covering the ISGEC client's multi-platform environment (four platforms total including Zimbra, Samba, and Nextcloud, accessed via a dedicated customer-care VPN), explaining the rationale for the multi-server split as reducing the blast radius of spam/compromise incidents across services. Covers Samba fundamentals: it's a single-box, no-real-"architecture" service used to share files/drives between roughly 100 Windows client machines over a common authenticated share (accessed via a UNC path/IP in Windows Explorer, where each user can only browse into directories they have credentials for -- demonstrated with two named users unable to see each other's private folders); all user/permission/share configuration lives in `smb.conf`; because command-line user management wasn't practical for ISGEC's own staff to operate, Tetra additionally deployed a GUI tool for them to add/remove users themselves. Briefly notes name-service/NIS configuration is notoriously syntax-heavy and error-prone, and that Zimbra installs typically take 2-3 days end-to-end (not the "couple of hours" some expect). Moves into a live walkthrough of ISGEC's single-server Nextcloud instance (a relatively recent migration): demonstrates its Collabora-based real-time online document editing (Excel- and Word-equivalent collaborative documents, no local software install needed) and mobile/desktop client support with automatic user sync from the customer/lab-users directory. Flags a concrete, actionable item live in the session -- the SSL certificate on this Nextcloud instance is set to expire around October 12 and needs renewal, framed explicitly as a process/follow-up issue rather than a technical one ("this isn't about who's technically capable, it's about making sure it gets followed up and done"). Also recaps a previously-resolved real support issue: users of a specific lab application (with ~1.2TB of data) were unable to copy large datasets through Nextcloud, which was diagnosed and fixed by the presenter, with a reference to the original deployment documentation for the lab app's PHP/module prerequisites.