1. Passwd
2. SSH
3. Duckdns
4. Fish/sftp

Passwd

On GCE, I actually don’t understand this one; I have no idea what the user password might be. However, when you log in through browser-ssh client, you have passwordless sudo; i.e. you can change the user’s password with sudo passwd. After setting the password, other ssh shells also have passwordless sudo.

SSH

Don’t try to add the pubkey manually through.ssh/authorized_keys. GCE overwrites the file regularly. Instead, google for 10 minutes to find the freaking webinterface to add the key. Let’s see how long this link gets you there. https://console.cloud.google.com/compute/metadata?tab=sshkeys&project=natcapgeoserver

The following does not work (anymore?).

• https://cloud.google.com/compute/docs/instances/access-overview
• https://stackoverflow.com/questions/65141387/authorized-keys-getting-deleted-from-google-cloud-vm

1. get own public key from ~/.ssh/id_rsa.pub
2. add the public .ssh/authorized_keys
3. chmod 600 .ssh/authorized_keys

Duckdns

• https://www.duckdns.org/install.jsp?tab=linux-cron

I usually set the cron task to 30 minutes and reboot.

*/30 * * * * ~/duckdns/duck.sh >/dev/null 2>&1
@reboot ~/duckdns/duck.sh >/dev/null 2>&1

Fish/sftp

https://linuxize.com/post/using-the-ssh-config-file/ https://unix.stackexchange.com/questions/419778/kde-dolphin-will-not-connect-to-dropbear-ssh-server

nano .ssh/config

Host necgeoserver
    HostName necgeoserver.duckdns.org
    User ubuntu
    IdentityFile ~/Dropbox/naturalcapitalconsulting/niklas.pem

chmod 600 ~/.ssh/config
ssh necgeoserver