Added the relevent parts of the .config directory. Alss add ssh config

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diff --git a/vimwiki/Servers.md b/vimwiki/Servers.md
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+The cluster depends on a number of servers. 
+
+`uhhpc` -- our administrative login machine. This runs 
+the job control systems, the system that forwards ssh 
+connections to headnode1 or headnode2, the web server, 
+a MariaDB server, and the LDAP server which controls 
+user accounts. If it goes down the system is probably unusable. 
+
+`headnode1` -- normal user login machine 1, serves /home. 
+If it goes down the cluster is not usable for normal users. 
+
+`headnode2` -- normal user login machine 2, serves /soft 
+and runs some licence servers. Software won`t be available if this goes down. 
+
+`stri-server` -- legacy main NFS server. If it goes down 
+some NFS volumes won`t be available. 
+
+`lofar-server` aka lofar.herts.ac.uk. Login machine for 
+LOFAR-UK users. Serves /data/lofar. If it goes down LOFAR users will complain. 
+
+`cair-cluster` aka cair-cluster.herts.ac.uk. Login machine and 
+server for CACP (formerly CAIR) users. If it goes down those users will complain.