SETUP.md

Setup

• Initial setup
• Set up a virtual machine for SSH exercises
  • Send credentials to students
  • Enable/disable password authentication
  • List a server's SSH key fingerprints
  • Renegerate SSH host keys
• Configure Azure virtual machines for students

Initial setup

• Put a random secret in secret.txt.

• Download CSV student data to students.csv.

• Check CSV encoding with file -I students.csv.

• If necessary, convert it to UTF-8:

  mv students.csv original.csv
  iconv -f macintosh -t UTF-8 < original.csv > students.csv

• Make sure number and content of columns are as expected in scripts/utils.js. Update the scripts and/or the CSV file if necessary.

• Run npm run setup.

Set up a virtual machine for SSH exercises

ansible-playbook -i ssh-vm/inventory -vv -D ssh-vm/playbook.yml

Send credentials to students

npm run mails

Enable/disable password authentication

# Enable
ansible-playbook -i ssh-vm/inventory -vv -D -t ssh -e ssh_password_authentication=true ssh-vm/playbook.yml

# Disable
ansible-playbook -i ssh-vm/inventory -vv -D -t ssh -e ssh_password_authentication=false ssh-vm/playbook.yml

List a server's SSH key fingerprints

$> find /etc/ssh -name "*.pub" -exec ssh-keygen -l -f {} \;

Renegerate SSH host keys

ansible-playbook -i ssh-vm/inventory -vv -D -t ssh -e ssh_regenerate_host_keys=true ssh-vm/playbook.yml

Configure Azure virtual machines for students

• npm run azure:inventory
• ANSIBLE_HOST_KEY_CHECKING=false ansible-playbook -vv -D -i azure/inventory azure/playbook.yml