Simplify SSH configuration and enable tmux

Author: AgenttiX

ssh/config.d/csc.conf

@@ -1,22 +1,18 @@
 # CSC servers
 
-Host lumi
-    HostName lumi.csc.fi
+Host lumi mahti puhti
     User mikamaki
     ForwardAgent yes
     PasswordAuthentication no
     ForwardX11 yes
+    RequestTTY yes
+    RemoteCommand tmux new -A -s ssh \; setenv SSH_AUTH_SOCK $SSH_AUTH_SOCK
+
+Host lumi
+    HostName lumi.csc.fi
 
 Host mahti
     HostName mahti.csc.fi
-    User mikamaki
-    ForwardAgent yes
-    PasswordAuthentication no
-    ForwardX11 yes
 
 Host puhti
     HostName puhti.csc.fi
-    User mikamaki
-    ForwardAgent yes
-    PasswordAuthentication no
-    ForwardX11 yes

ssh/config.d/git.conf

@@ -1,18 +1,19 @@
 # Git servers
 
+Host bitbucket bitbucket.org github github.com gitlab gitlab.com version.helsinki.fi
+    User git
+    PasswordAuthentication no
+
 Host bitbucket bitbucket.org
     HostName bitbucket.org
-    User git
     # BitBucket does not support Ed25519 keys
     # IdentityFile ~/.ssh/id_rsa
-    PasswordAuthentication no
 
 Host github github.com
     HostName github.com
-    User git
-    PasswordAuthentication no
 
 Host gitlab gitlab.com
     HostName gitlab.com
-    User git
-    PasswordAuthentication no
+
+Host version.helsinki.fi
+    HostName version.helsinki.fi

ssh/config.d/helsinki.conf

@@ -6,60 +6,41 @@
 Match Host hile exec "! hostname | grep 'ad.helsinki.fi'"
     ProxyJump melkki.cs.helsinki.fi
 
+Host hile markka melkki melkinkari melkinpaasi pangolin pultti turso *.physics.helsinki.fi *.it.helsinki.fi
+    User makimika
+    ForwardAgent yes
+
 Host hile
     HostName hile01.it.helsinki.fi
-    User makimika
-   ForwardAgent yes
 
 Host login.physics.helsinki.fi
     HostName login.physics.helsinki.fi
-    User makimika
-    ForwardAgent yes
     # Enable access with password to enable Kerberos to acquire its tickets,
     # and to make PyCharm remember remote connection credentials
-    IdentitiesOnly no
+    # IdentitiesOnly no
 
 Host markka markka.it.helsinki.fi
     HostName markka.it.helsinki.fi
-    User makimika
-    ForwardAgent yes
 
 Host melkki melkki.cs.helsinki.fi
     HostName melkki.cs.helsinki.fi
-    User makimika
-    ForwardAgent yes
 
 Host melkinkari melkinkari.cs.helsinki.fi
     HostName melkinkari.cs.helsinki.fi
-    User makimika
-    ForwardAgent yes
 
 Host melkinpaasi melkinpaasi.cs.helsinki.fi
     HostName melkinpaasi.cs.helsinki.fi
-    User makimika
-    ForwardAgent yes
 
 Host pangolin pangolin.it.helsinki.fi
     HostName pangolin.it.helsinki.fi
-    User makimika
-    ForwardAgent yes
 
 Host pultti pultti.it.helsinki.fi
     # This is a larger machine than the other login hosts:
     # 256 GB RAM, 2x Intel Xeon CPU E5-2620 -> 24 threads
     HostName pultti.it.helsinki.fi
-    User makimika
-    ForwardAgent yes
 
 Match Host turso exec "! hostname | grep 'ad.helsinki.fi'"
     ProxyJump melkinpaasi
 
 Host turso turso.cs.helsinki.fi
     HostName turso.cs.helsinki.fi
-    User makimika
-    ForwardAgent yes
-
-Host version.helsinki.fi
-    HostName version.helsinki.fi
-    User git
-    PasswordAuthentication no