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Last active February 28, 2026 06:48
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Connect to Host (Remote Server via SSH)
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ssh.config
Host *
AddKeysToAgent yes
UseKeychain yes
IdentityFile ~/.ssh/id_ed25519
Host {human_readable_name}
HostName {remote_server_ip}
User {Ubuntu_server_user}
IdentityFile ~/.ssh/id_ed25519
IdentitiesOnly yes
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ManotLuijiu commented Feb 28, 2026 •
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VS Code Remote-SSH keeps asking for password despite id_ed25519.pub being registered in the server's ~/.ssh/authorized_keys.

macOS SSH agent loses keys after reboot. Even if the key exists on disk, the agent has no identities loaded:

ssh-add -l
# The agent has no identities.

Fix (on macOS / iMac side)

Step 1: Add key to agent

ssh-add ~/.ssh/id_ed25519
# Press Enter for passphrase (blank if none was set — terminal shows nothing, that's normal)

Step 2: Persist across reboots (macOS-specific)

ssh-add --apple-use-keychain ~/.ssh/id_ed25519

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