Setting up VMs

In this chapter, we will import Ubuntu 24.04 OVA appliance to VirtualBox and will set it up.

  • Download Ubuntu OVA file
cd ~/Downloads/
curl -LO https://cloud-images.ubuntu.com/noble/current/noble-server-cloudimg-amd64.ova

  • Create a seed iso which is needed for setting initial password and login

    • Generate new SSH keys of not already done
      ssh-keygen -t ed25519 -C "${USER}@{HOSTNAME}"
    • Install cloud-utils
      sudo apt install cloud-utils
    • Create config to set at intial-boot
      cat <<EOF > my-cloud-config.yaml
#cloud-config
chpasswd:
  list: |
    ubuntu:ubuntu
  expire: False
ssh_pwauth: True
ssh_authorized_keys: 
- $(cat ${HOME}/.ssh/id_ed25519.pub)
EOF
    • Create seed ISO
      cloud-localds my-seed.iso my-cloud-config.yaml

  • Import OVA

    From the welcome page, click “Import”

    Select the OVA as source

    1. Click Settings
    2. Change name
    3. Increase CPU to 4
    4. Increase RAM to 4GB
    5. Click Finish

    1. Wait for import to complete
    2. Click the VM

    1. Go to settings of the VM.
    2. Add an IDE disk to Storage

    Attach the my-seed.iso to the CDROM

    Change the network settings by selecting your Wifi adapter as Bridge device for the VM and enable promiscuous mode.

  • Repeat the same steps for a worker node

  • Power-on the VMs and wait for the prompt to set new password

    • Note:- Password is “ubuntu”

  • Since you are connected to the same network where wifi is available, IP address will be set on both VMs.

    • Execute ip a on each VMs to see the IP

  • Now you can SSH into the nodes from you local system using the IP and the credentials.

  • Better setup password-less auth

    ssh-copy-id ubuntu@192.168.0.175
ssh-copy-id ubuntu@192.168.0.149

  • Set hostnames

    sudo hostnamectl set-hostname cks-master
    sudo hostnamectl set-hostname cks-worker