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1-discovering_selecting.md

+# Discovering, visualizing and reserving Grid'5000 resources
+
+At this point, you should now be connected to a site frontend, as indicated by your shell prompt (`<login>@f<site>: ~ %`). This machine will **ONLY** be used to reserve and manipulate resources on this site, using the *OAR software suite* will be the only way to request resources before using them. 
+
+## Discovering and visualizing
+There are several ways to learn about the site's resources and their status:
+
+### On SSH connection
+The site's MOTD (message of the day) lists all clusters and their features. 
+
+```bash
+Welcome to Grid'5000
+
+** Useful links:
+ - users home: https://www.grid5000.fr/w/Users_Home
+ - usage policy: https://www.grid5000.fr/w/Grid5000:UsagePolicy
+ - account management (password change): https://api.grid5000.fr/ui/account
+ - support: https://www.grid5000.fr/w/Support
+
+** Connect to a site:
+ - to connect to any of the Grid'5000 sites:
+     grenoble lille luxembourg lyon nancy nantes rennes sophia
+   (from here) $ ssh <site>
+ - mind configuring the ssh aliases (proxycommand) on your workstation to
+   connect directly to the Grid'5000 sites from the outside:
+   (from outside) $ ssh <site>.g5k
+ - or use the Grid'5000 VPN: https://www.grid5000.fr/w/VPN
+
+** Data on access.grid5000.fr (aka access-{north,south}.grid5000.fr):
+ - home directories on access machines are not synchronized, access machines
+   should not be used to store data.
+ - to copy data from/to a site, use the site NFS mount point linked in the home:
+   (from outside) $ scp files login@access.grid5000.fr:<site>/
+ - or copy directly from/to the site using the ssh alias (proxycommand):
+   (from outside) $ scp files login@<site>.g5k:
+
+See https://www.grid5000.fr/w/Getting_Started for more information.
+```
+
+Additionally, it gives also the list of current or future downtimes due to maintenance, which is also available from at https://www.grid5000.fr/status/ .
+
+```
+** Warning: 1 event in progress
+--> #Incident at #Nantes from 2021-09-03@16:30 : air conditioning failure, ecotype nodes unavailable
+    https://intranet.grid5000.fr/bugzilla/show_bug.cgi?id=13386
+```
+
+### On the wiki
+Site pages on the wiki (e.g. [Nantes:Home](https://www.grid5000.fr/w/Nantes:Home)) contain a detailed description of the site's hardware and network.
+
+### On the status page
+The page information links to the resource status on each site, with two different visualizations available:
+- the current placement and queued jobs status (see [Nantes's current status](https://intranet.grid5000.fr/oar/Nantes/monika.cgi)) **in LIVE**
+- the current and planned resources reservations in a Gantt diagram history (see [Nantes's current status](https://intranet.grid5000.fr/oar/Nantes/drawgantt-svg/)) 
+