local-kubernetes-setup-with-rke-and-vagrant

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local-kubernetes-setup-with-rke-and-vagrant

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Repository containing source code for local cluster setup with vagrant, virtual box and Rancher Kubernetes Engine (RKE).

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# Local Kubernetes Cluster Setup with Vagrant and RKE
This repository contains the source code for a local cluster setup using Vagrant and Rancher Kubernetes Engine (RKE).

## Requirements/Prerequisites
- [Rancher Kubernetes Engine (RKE)](https://rancher.com/docs/rke/latest/en/installation/)
- [Virtual Box](https://www.virtualbox.org/wiki/Downloads)
- [Vagrant](https://www.vagrantup.com/docs/installation)

## Other Helpful Resources
- [Setup a basic Kubernetes cluster with ease using RKE](https://rancher.com/blog/2018/2018-09-26-setup-basic-kubernetes-cluster-with-ease-using-rke/)
- [Development in Kubernetes - Local vs. Remote Clusters](https://loft.sh/blog/development-in-kubernetes-local-vs-remote-clusters/)

## Create Virtual Machines (VMs)
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]
```
When prompted, enter the root user password configured in the bootstrap node script.

## Provision/Create Kubernetes cluster with RKE
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](https://k9scli.io/), you can start it up to see the objects that are currently running in your cluster.

local-kubernetes-setup-with-rke-and-vagrant

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