This repository contains the source code for a local cluster setup using Vagrant and Rancher Kubernetes Engine (RKE).
- Setup a basic Kubernetes cluster with ease using RKE
- Development in Kubernetes - Local vs. Remote Clusters
To spin up the virtual machines, run the following command at the root level of the project directory:
vagrant up
Once the VMs are up and running, you can check their status with vagrant status or by connecting to anyone of them using vagrant ssh [hostname]. Once you've confirmed that all machines are running with no issues, copy over the generated SSH keys from your workstation/host to each guest machine with the following commands:
ssh-copy-id root@[relevant ip address]
Example:
ssh-copy-id root@172.16.128.4
ssh-copy-id root@172.16.128.5
ssh-copy-id root@172.16.128.6
When prompted, enter the root user password configured in the bootstrap node script.
To provision the cluster on the VMs, run the rke config command. You will be presented with a series of questions to which the answers will be used to declare the cluster config in a generated cluster.yml file upon completion. Alternatively, you can create the cluster.yml file and populate it with your desired configuration. Once you have the cluster.yml file, run the following command:
rke up
If you have a pre-existing cluster.yml file, run the following command instead:
rke up --config cluster.yml
When the cluster has been provisioned, the following files will be generated in the root directory:
- cluster.rkestate - the cluster state file
- kube_config_cluster.yml - kube config file
To add the cluster to your context, copy the kube config file:
cp kube_config_cluster.yml ~/.kube/config
If you do not have a ./kube directory on your machine you will have to create one.
The last step will be to check that you can connect to your cluster:
kubectl cluster-info
or
kubectl config current-context
If you have a tool like K9s, you can start it up to see the objects that are currently running in your cluster.