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https://github.com/hamidgholami/k8s-lab

Kubernetes Labratory
https://github.com/hamidgholami/k8s-lab

cncf devops devops-tools k3s k3s-architecture k3s-cluster k3s-minicluster k8s k8s-cluster k8s-learn kubernetes kubernetes-cluster kubernetes-labs kubernetes-learning sre

Last synced: 3 months ago
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Kubernetes Labratory

Host: GitHub
URL: https://github.com/hamidgholami/k8s-lab
Owner: hamidgholami
License: apache-2.0
Created: 2021-05-23T08:58:11.000Z (over 3 years ago)
Default Branch: main
Last Pushed: 2023-09-22T10:32:59.000Z (over 1 year ago)
Last Synced: 2023-09-23T15:31:35.786Z (over 1 year ago)
Topics: cncf, devops, devops-tools, k3s, k3s-architecture, k3s-cluster, k3s-minicluster, k8s, k8s-cluster, k8s-learn, kubernetes, kubernetes-cluster, kubernetes-labs, kubernetes-learning, sre
Language: Jinja
Homepage:
Size: 45.9 KB
Stars: 5
Watchers: 1
Forks: 1
Open Issues: 0
Metadata Files:
- Readme: README.md
- License: LICENSE

Awesome Lists containing this project

README

# Lightweight Kubernetes Labratory

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This is a 3-node-cluster Kubernetes that uses `k3s`. It can be very usefull for learning Kubernetes concepts easy and fast without struggling with installing kubernetes by `kubeadm` or `minikube`. Although learning methods of Kubernetes installation is definitely crucial, for first step and for learning vital and basic concepts of Kubernetes we need a lightweight and repeatable infrastructure.

#### Requirement
Make sure that following tools are installed on your host.

1. Ansible
2. Vagrant
3. libvirt/KVM or virtualbox

#### SSH configuration
Add the following configuration in `~/.ssh/config`
```bash
Host 10.0.0.*
Hostname %h

Host 192.168.56.*
Hostname %h

Match Host 10.0.0.*
User vagrant
Port 22
UserKnownHostsFile /dev/null
StrictHostKeyChecking no
PasswordAuthentication no
IdentityFile $HOME/.vagrant.d/insecure_private_key
IdentitiesOnly yes
LogLevel FATAL

Match Host 192.168.56.*
User vagrant
Port 22
UserKnownHostsFile /dev/null
StrictHostKeyChecking no
PasswordAuthentication no
IdentityFile $HOME/.vagrant.d/insecure_private_key
IdentitiesOnly yes
LogLevel FATAL

```
#### How does it work?
Fill the variables in `vagrant_variables.yaml` and then execute the following command:
```bash
vagrant up
```
#### Kubeconfig
For executing `kubectl` from your machine rather than in master node (`node-1`), copy the kubectl configuration in your machine:
```
scp vagrant@:~/.kube/config ~/.kube/config
```
#### Changing default storage pool directory
[URL](https://serverfault.com/questions/840519/how-to-change-the-default-storage-pool-from-libvirt)

For changing storage pool default path, the following commands can be used:
```bash
virsh pool-list
virsh pool-destroy default
virsh pool-undefine default
virsh pool-define-as --name default --type dir --target /hdd/pool_ssd_nvm
virsh pool-autostart default
virsh pool-start default
```