My home lab cluster.
- Setup n VMs / bare metal machines with Ubuntu 18.04. The K8s control plan + etcd nodes should have 1.5 GB memory. I've given the worker nodes 8 GB memory.
- Install docker on each VM.
wget -O - https://raw.githubusercontent.com/just1689/kubernetes-setup-rke/master/setup-node.sh | bash
- Create a user on each VM.
- Allow your new user to run
docker x
commands.
sudo usermod -aG docker $USER
- Generate ssh keys with
ssh-key-gen
- Copy your key over to each vm with
ssh-copy-id user@address
- Turn swap off on each VM by running
sudo swapoff -a
- To allow for cleaning up as root, setup cert base ssh access to root to each VM. You may not need this. It's only for recovering from unsupported upgrade paths etc.
Modify the cluster.yml
by changing the entries under nodes
. Pay particular attention to the IP addresses, the user field and the roles.
Once the cluster.yml file reflects your desired cluster configuration run:
rke up
- Once it is up you will find a new file called
kube_config_cluster.yml
- Overwrite your home kube config with the following command
cp kube_config_cluster.yml ~/.kube/config
- You will then be able to run
kubectl get nodes
and see the nodes.
Longhorn
kubectl apply -f apps/01-longhorn/
Prometheus
kubectl apply -f apps/02-prometheus/
Grafana
kubectl apply -f apps/03-grafana/
Loki
kubectl apply -f apps/04-loki/
Lens can show you the cluster health of the nodes.
Lens can also show the health of your workloads. You can watch this space to see the various lab apps come up.
SCSI
sudo apt install open-iscsi -y