The purpose of this project is to build a K8S environment quickly with Virtualbox, Ansible and Vagrant.
Tested Environment
- Ubuntu: 18.04.2
- Vagrant: 2.2.4
- Ansible: 2.8.1
- Virtualbox: 5.2.30
1. Install Vagrant, Ansible and VirtualBox
sudo apt-get install virtualbox vagrant ansible
2. Initiate Vagrant
Create a directory and run the following under it
vagrant box add ubuntu/bionic64
vagrant init ubuntu/bionic64
A file "Vagrantfile" will be created.
"ubuntu/bionic64" refers to Ubuntu 18.04. Vagrant boxes of other OS are listed on https://app.vagrantup.com/boxes/search
3. Append IP address of your host to the end of file /etc/ansible/hosts
4. Download the zip file from Github and uncompress it. Make sure the uncompressed .yml files and "Vagrantfile" are in the directory you have created in Step 2. "Vagrantfile" should replace the original one created in Step 2
5. Set up the K8S Master Node on the host
First, edit the master-playbook.yml and edit the "vars" values. The attributes are:
- home_directory
- cni_provider
- master_node_ip_address
- pod_network
Then dry run the master-playbook.yml first and edit the playbook if needed.
ansible-playbook --connection=local master-playbook.yml --check -vvv
If everything seems OK, run
ansible-playbook --connection=local master-playbook.yml
6. Check whether the K8S master node is running
kubectl get nodes
You should see the master node with STATUS "Ready"
7. Set up the K8S Worker Nodes on VirtualBox
Edit the new "Vagrantfile" file created in Step 4 and you may change the properties of the following attributes
- OS (default: ubunut/bionic64)
- number of Worker Nodes (default: 3)
- hostnames
- vCPU per nodes (default: 2)
- memory per nodes (default: 2048)
- IP address range
Then run
vagrant up
8. Done! Now check the status of your K8S environment
kubectl get nodes
The Kubernetes Dashboard should also be running. On the web browser of the host (i.e., the master node), go to http://localhost:8001/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/
