Have you set up and launched a Kubernetes cluster from scratch?

Yes, setting up a Kubernetes cluster from scratch involves several steps:

1. Preparing servers (virtual or physical) with an installed OS.
2. Installing and configuring a container runtime (e.g., Docker or containerd).
3. Initializing the control plane node with kubeadm init.
4. Configuring the cluster network with a network plugin (e.g., Calico, Flannel).
5. Adding worker nodes to the cluster using kubeadm join.
6. Checking the cluster status with kubectl get nodes.

It is important during the process to ensure correct network rules, certificates, and access roles are configured. After deployment, applications can be deployed and managed via kubectl. This approach allows for a fully manageable Kubernetes cluster for development or production.