Lab meeting 9/10/26

setting up amaryl

Last login: Thu Sep 10 06:37:10 on console

(base) sam@Samuels-MacBook-Pro ~ % nc -z -w 5 amarel-new.hpc.rutgers.edu 22 && echo "✓ Amarel reachable" || echo "✗ Cannot reach Amarel"

Connection to amarel-new.hpc.rutgers.edu port 22 [tcp/ssh] succeeded!

✓ Amarel reachable

(base) sam@Samuels-MacBook-Pro ~ % test -e ~/.ssh/id_ed25519_amarel && echo "KEY EXISTS" || echo "NO KEY"

NO KEY

(base) sam@Samuels-MacBook-Pro ~ % ssh-keygen -t ed25519 -f ~/.ssh/id_ed25519_amarel -C amarel-vscode

Generating public/private ed25519 key pair.

Created directory '/Users/sam/.ssh'.

Enter passphrase for "/Users/sam/.ssh/id_ed25519_amarel" (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /Users/sam/.ssh/id_ed25519_amarel

Your public key has been saved in /Users/sam/.ssh/id_ed25519_amarel.pub

The key fingerprint is:

SHA256:ZoTwK5VuT6EIfE0npiz36ehi8BHiQsF6vNcjazDGjsk amarel-vscode

The key's randomart image is:

+--[ED25519 256]--+

|. . + . |

| + . B = |

|..= = * o |

|o.+= = = . |

|o+ oo.B S |

|o.B o=o= |

|oB =.o... |

|oE=.o |

| . o. |

+----[SHA256]-----+

(base) sam@Samuels-MacBook-Pro ~ % ssh-keyscan -t ed25519 amarel-new.hpc.rutgers.edu 2>/dev/null > ~/.ssh/amarel_hostkey.pending && ssh-keygen -lf ~/.ssh/amarel_hostkey.pending

256 SHA256:bKbfUNxVCu2nQvssMuNBFtzoR3J7BxXU5RSI9MjWi+E amarel-new.hpc.rutgers.edu (ED25519)

(base) sam@Samuels-MacBook-Pro ~ % cat ~/.ssh/amarel_hostkey.pending >> ~/.ssh/known_hosts && rm -f ~/.ssh/amarel_hostkey.pending && echo "✓ host key trusted"

✓ host key trusted

(base) sam@Samuels-MacBook-Pro ~ % mkdir -p ~/.cache/amarel-vscode

cat > ~/.cache/amarel-vscode/step-3.1.sh <<'EOF'

#!/usr/bin/env bash

ssh-copy-id -i ~/.ssh/id_ed25519_amarel.pub -o PreferredAuthentications=password -o PubkeyAuthentication=no syh35@amarel-new.hpc.rutgers.edu

EOF

echo "✓ installer staged"

✓ installer staged

(base) sam@Samuels-MacBook-Pro ~ % bash ~/.cache/amarel-vscode/step-3.1.sh

/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/Users/sam/.ssh/id_ed25519_amarel.pub"

/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed

/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys