How do you setup Kubernetes certified developer home lab with virtual machines?
You can use Ubuntu Multipass snap to quickly setup multiple virtual machines for a Kubernetes certified developer course home lab. This will save you expenses if you can run the lab at home.
What components do you need?
- A home Linux machine capable of running Snap packages.
- Snapd for installing snap packages
- Multipass for setting up multiple virtual machines
How much memory do you need?
Probably at least 24GB+, each virtual machine requires 8GB and you need to have memory for your Linux machine
Install Snapd for installing snap packages.
sudo apt install snapd
Install Multipass via snap install
sudo snap install multipass
How do you setup SSH keys for SSH into multipass machines?
Create a cloud-init.yaml file. Paste your public ssh key from ~/.ssh/id_rsa.pub on the first ssh_authorized_keys - line in the cloud-init.file.
ssh_authorized_keys: - ssh-key xyz
Setup two Multipass virtual machines suitable for Linux foundation certified kubernetes lab. These virtual machines needs at least two cores -c 2, -d 20GB of disk and -m 8GB of memory.
multipass launch -c 2 -d 20G -m 8G -n master --cloud-init ./cloud-init.yaml
multipass launch -c 2 -d 20G -m 8G -n worker --cloud-init ./cloud-init.yaml
How do you start the multipass virtual machines?
multipass start master
multipass start worker
How do you SSH into the multipass virtual machines?
Use multipass list to get the ip adress of the master and worker nodes.
Name State IPv4 Image master Running 10.170.11.105 Ubuntu 20.04 LTS 192.168.242.64 worker Running 10.170.11.210 Ubuntu 20.04 LTS
Then use ssh with ubuntu@masterip ssh@workerip such as:
You now have two Ubuntu home virtual machines suitable for the labs.