Project to create a local environment to run kubernetes server.
The vagrant creates a Kubernetes Cluster with N control planes and N workers.
To Control Plane works in HA, we need a loadbalancing to them. The haproxy will be this loadbalancig with a new instance for him.
All server configuration is made by Ansible.
- Vagrant
- Ansible
Verify the Vagrantfile to get the version of all used components.
On Vagrantfile you can change the variables as needed.
IMAGE_NAME = "ubuntu/jammy64" # ubuntu 22.04
QTD_CONTROL_PLANES = 2
QTD_WORKER_NODES = 2
IMAGE_NAME: Image name to Vagrant file
QTD_NODES: Quantity of worker nodes
Edit the kubernetes-setup/vars.yml as needed
# k8s_version: "1.30" # You can use this way to install the latest minor version
k8s_version: "1.30.1-1.1" # You can use this way to install exacly version
k8s_major_version: "1.30"
calico_version: "3.28.0"K8S_VERSION: Version of kubelet/kubeadm/kubectl to install. You can use exacly version or Major and the script will select for you based on SO repository.
K8S_MAJOR_VERSION: Major kubernetes version (needs be based on K8S_VERSION minor)
CALICO_VERSION: Version of CALICO (Kubernetes Network Add-on)
When the vagrant run, it will create the servers and provision the configuration.
Only needs to run:
vagrant up
or to be quickly, you can create simulteously the instances:
vagrant up haproxy &
vagrant up controlplane-1 &
vagrant up controlplane-2 &
vagrant up node-1 &
vagrant up node-2
vagrant halt
vagrant suspend
vagrant resume
vagrant destroy
To configure the VM created by vagrant, run the ansible with the command:
ansible-playbook main.yml
The ansible configuration is on ansible.cfg
You can check the inventory in hosts.ini file.
When the ansible runs, it will execute main.yml, who will call the kuebrentes-setup/k8s_setup.yml.
The playbooks called by kuebrentes-setup/k8s_setup.yml load the vars.yml.
haproxy.yml: Configure Control Plane Loadbalance with HAProxy
k8s_common.yml: Configure Kubernetes packages and CRI
k8s_control_plane.yml: Configure the First Control Plane
k8s_control_plane_join.yml: Configure Others Control Planes by kubeadm join command
k8s_worker_node.yml: Configure worker nodes by kubeadm command
The ansible script configure the user vagrant inside k8s-master VM (Control Plane) and copy the configuration to admin.conf file.
Access the k8s-master VM
vagrant ssh k8s-master
Execute the kubectl command
vagrant@k8s-master:~$ kubectl get nodes
NAME STATUS ROLES AGE VERSION
controlplane-1 Ready control-plane 26m v1.30.1
controlplane-2 Ready control-plane 25s v1.30.1
node-1 Ready <none> 9m17s v1.30.1
node-2 Ready <none> 6m5s v1.30.1
Copy the admin.conf file to .kube folder to configure
cp kubernetes-setup/admin.conf ~/.kube/config
Execute the kubectl command
$ kubectl get pods -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system coredns-7db6d8ff4d-n55jj 1/1 Running 0 31m
kube-system coredns-7db6d8ff4d-ssxhp 1/1 Running 0 31m
kube-system etcd-k8s-master 1/1 Running 0 31m
kube-system kube-apiserver-k8s-master 1/1 Running 0 31m
kube-system kube-controller-manager-k8s-master 1/1 Running 0 31m
kube-system kube-proxy-48jdc 1/1 Running 0 31m
kube-system kube-proxy-5pr48 1/1 Running 0 25m
kube-system kube-proxy-vlgdx 1/1 Running 0 28m
kube-system kube-scheduler-k8s-master 1/1 Running 0 31m
tigera-operator tigera-operator-76ff79f7fd-lshkn 1/1 Running 0 31