This example uses CRI-O however we can also install other container runtimes such as Docker that uses containerd. So, we will need to install a container runtime before installing Kubernetes. Kubernetes is a platform for container orchestration and CRI is a Kubernetes API that interacts with different container runtimes.
sudo -i apt-get update & apt-get upgrade -y apt-get install -y vimĢ.2) Container runtime interface installation We will install tools such as Vim, which we will use later when setting up the Kubernetes. On the machine where you want to import the appliance, go to Host Network Manager and create a new interface with defaults except to uncheck the DHCP Server checkbox.Voila, the Ubuntu installation is complete. One last thing which is important because unfortunately VirtualBox does not create a network interface in network manager. Once done, you are ready to share the VM ova file for testing. You can now shutdown the virtual machine and click on the Export Appliance from File menu to export the appliance file for sharing. You can enable it in sudo vim /etc/ssh/sshd_config by changing PasswordAuthentication no to PasswordAuthentication yes. That’s because sshd is configured to accept only keys and password auth is disabled. If you have Ubuntu cloud image and get the following error when ssh to Permission denied (publickey).” Note: This IP only allow access to the guest from the host, not from the network. You can now also ssh to it using this new IP. Now ip add will show you the assigned IP to this newly added interface. Run after saving the file: sudo netplan apply
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