Kubernetes should be run anywhere. It can be integrated with cloud providers AWS & Google Cloud. For home lab or testing purpose minikube is perfect fit. Minikube can quickly spin up on a local machine
- github link : http://github.com/kubernetets/minikube
Minikube is a tool that makes it easy to run kubernetes locally. Minikube runs a single node kubernetes cluster inside a Linux VM. Its aims for the users who want to test it out or use it for development.
Minikube seutp:
- It works on linux,windows or Macos
- Need a virtualization software installed to run minikube
- virtualbox is free , can be downloaded from www.virtualbox.com
- minikube can be downloaded from : http://github.com/kubernetes/minikube
- Cluster can be launched using in shell terminal/shell/powershell
In my home lab, I have centos7 installed on my laptop
- 4 GB ram
- Core i3 processor (gen2)
- intel VT enabled in the bios
Note: I have installed virtualbox, curl and wget on my centos 7
[root@localhost ~]# curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.17.1/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 51 83.3M 51 42.9M 0 0 166k 0 0:08:32 0:04:24 0:04:08 177k
Once the minikube has downloaded, I am starting minikube
[root@localhost /]# minikube start Starting local Kubernetes cluster... Starting VM... Downloading Minikube ISO 89.24 MB / 89.24 MB [==============================================] 100.00% 0s SSH-ing files into VM... Setting up certs... Starting cluster components... Connecting to cluster... Setting up kubeconfig... Kubectl is now configured to use the cluster.
Note: I have already downloaded kubectl, no need of any configuration, download and copy in /usr/local/bin.
Checking the config file
[root@localhost /]# ls ~/.kube/
config
[root@localhost /]# cat ~/.kube/config
apiVersion: v1
clusters:
- cluster:
certificate-authority: /root/.minikube/ca.crt
server: https://192.168.99.100:8443
name: minikube
contexts:
- context:
cluster: minikube
user: minikube
name: minikube
current-context: minikube
kind: Config
preferences: {}
users:
- name: minikube
user:
client-certificate: /root/.minikube/apiserver.crt
client-key: /root/.minikube/apiserver.key
Using kubectl, I am pulling one image from my local docker registry, and exposing the end point Url. I am creating a service , exposing port and pulling image from below command.
kubectl run my-jenkins --image=http://localhost:5000/v1/repositories/jenkinslocal/ tags/latest --port=8080 deployment " my-jenkins " created kubectl expose deployment my-jenkins --type=NodePort service "my-jenkins" exposed minikube service my-jenkins –url Waiting, endpoint for service is not ready yet... Waiting, endpoint for service is not ready yet... Waiting, endpoint for service is not ready yet... #Above command will take time to pull image, depending on internet speed.
Note: It will pull the image, and provide an end point URL