Lala Podo
front page
tech blog
Cloud Native Academy
avatar
What is Minikube
Minikube is a lightweight open source tool that can run a Kubernetes cluster on a local machine.
Its main purpose is to allow developers to quickly deploy, test and run Kubernetes applications in a local environment.
Minikube provides an easy way to install and run a Kubernetes cluster.
Using Minikube, you can quickly and easily create and manage a single-node Kubernetes cluster for testing and development.
The main function:
Quickly install and start a Kubernetes cluster
Support multiple virtualization technologies
Support multiple Kubernetes versions
Support for Kubernetes components
Support for local development and testing
kubectl installation steps
MACOS
Quick installation using brew (https://brew.sh/index_zh-cn)
brew install kubectl
Verify installation
kubectl version
Set kubectl’s auto-completion function
echo “source <(kubectl completion bash)" >> ~/.bash_profile
source ~/.bash_profile
Reopen the terminal and press the Tab key to automatically complete the command, parameter and resource name
Linux (the common distribution version Debian11.x is used for installation here)
sudo apt update
Install required dependencies
sudo apt install -y apt-transport-https ca-certificates curl
Download and import the Kubernetes GPG key
curl -fsSL https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo gpg –dearmor -o /etc/apt/trusted.gpg.d/kubernetes.gpg
Add Kubernetes package repository
echo “deb https://apt.kubernetes.io/kubernetes-xenial main” | sudo tee /etc/apt/sources.list.d/kubernetes.list
Update system package list
sudo apt update
Install kubectl
sudo apt install -y kubectl
Verify installation
kubectl version
Set kubectl’s auto-completion function
sudo apt update
sudo apt install bash-completion
echo ‘source /usr/share/bash-completion/bash_completion’ >> ~/.bashrc
echo ‘source <(kubectl completion bash)' >> ~/.bashrc
source ~/.bashrc
Reopen the terminal and press the Tab key to automatically complete the command, parameter and resource name
Minikube installation (the prerequisite Docker has been installed)
Linux (the common distribution version Debian11.x is used for installation here)
This installation uses the latest version of the current time
Official documentation (https://minikube.sigs.k8s.io/docs/start/)
curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube_latest_amd64.deb
sudo dpkg -i minikube_latest_amd64.deb
MACOS
Quick installation using brew (https://brew.sh/index_zh-cn)
brew install minikube
Use Minikube to create an environment and test
Start the kubernetes environment (QEMU)
The driver here is QEMU2, which uses built-in network implementation by default and does not support minikube service and minikube tunnel commands
user@debian:~$ minikube start
W0406 12:10:46.130964 3670 main.go:291] Unable to resolve the current Docker CLI context “default”: context “default” does not exist
minikube v1.30.1 on Debian 11.6
? Automatically select the qemu2 driver
Automatically selected the builtin network
? You are using the QEMU driver without a dedicated network, which doesn’t support minikube service & amp; minikube tunnel commands.
Downloading VM boot image…
> minikube-v1.30.1-amd64.iso…: 65 B / 65 B [———] 100.00% ? p/s 0s
> minikube-v1.30.1-amd64.iso: 282.84 MiB / 282.84 MiB 100.00% 15.14 MiB p
Starting control plane node minikube in cluster minikube
Downloading Kubernetes v1.26.3 preload…
> preloaded-images-k8s-v18-v1…: 397.02 MiB / 397.02 MiB 100.00% 46.78 M
Creating qemu2 VM (CPUs=2, Memory=2200MB, Disk=20000MB) …
Preparing Kubernetes v1.26.3 in Docker 20.10.23…
? Generating certificates and keys…
?Booting up control plane…
? Configure RBAC rules…
Configuring bridge CNI (Container Networking Interface)…
?Using image gcr.io/k8s-minikube/storage-provisioner:v5
Verifying Kubernetes components…
Enabled addons: storage-provisioner, default-storageclass
Done! kubectl is now configured to use “minikube” cluster and “default” namespace by default
Start the kubernetes environment (Docker)
This driver supports minikube service and minikube tunnel commands for Docker
user@debian:~$ minikube start
minikube v1.30.1 on Debian 11.6
? Automatically select the docker driver. Other options: qemu2, ssh
Using Docker driver with root privileges
Starting control plane node minikube in cluster minikube
Pulling base image…
> index.docker.io/kicbase/sta…: 373.53 MiB / 373.53 MiB 100.00% 5.75 Mi
? minikube was unable to download gcr.io/k8s-minikube/kicbase:v0.0.39, but successfully downloaded docker.io/kicbase/stable:v0.0.39 as a fallback image
Creating docker container (CPUs=2, Memory=2200MB) …
Preparing Kubernetes v1.26.3 in Docker 23.0.2…
? Generating certificates and keys…
?Booting up control plane…
? Configure RBAC rules…
Configuring bridge CNI (Container Networking Interface)…
?Using image gcr.io/k8s-minikube/storage-provisioner:v5
Verifying Kubernetes components…
Enabled addons: storage-provisioner, default-storageclass
Done! kubectl is now configured to use “minikube” cluster and “default” namespace by default
Verify the environment
Get the current context, you can identify the currently used cluster
user@debian:~$ kubectl config get-contexts
CURRENT NAME CLUSTER AUTHINFO NAMESPACE
-
minikube minikube minikube default
Get the current namespace resource
user@debian:~$ kubectl get all
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.96.0.1 443/TCP 6m31s
View cluster nodes
user@debian:~$ kubectl get nodes
NAME STATUS ROLES AGE VERSION
minikube Ready control-plane 7m1s v1.26.3
Deploy application test (NodePort)
Create a deployment
user@debian:~$ kubectl create deployment hello-minikube –image=kicbase/echo-server:1.0
deployment.apps/hello-minikube created
expose deployment
user@debian:~$ kubectl expose deployment hello-minikube –type=NodePort –port=8080
service/hello-minikube exposed
View Service
user@debian:~$ kubectl get services hello-minikube
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
hello-minikube NodePort 10.101.145.192 8080:30027/TCP 40s
Authentication
user@debian:~$ kubectl port-forward service/hello-minikube 7080:8080
Forwarding from 127.0.0.1:7080 -> 8080
Forwarding from [::1]:7080 -> 8080
user@debian:~$ curl localhost:7080
Request served by hello-minikube-77b6f68484-6z7cq
HTTP/1.1 GET /
Host: localhost:7080
Accept: /
User-Agent: curl/7.74.0
Deployment Application Test (LoadBalancer)
Create a deployment
user@debian:~$ kubectl create deployment balanced –image=kicbase/echo-server:1.0
deployment.apps/balanced created
expose deployment
user@debian:~$ kubectl expose deployment balanced –type=LoadBalancer –port=8080
service/balanced exposed
View Service
user@debian:~$ kubectl get services balanced
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
balanced LoadBalancer 10.110.125.56 8080:30675/TCP 24s
Authentication
user@debian:~$ kubectl port-forward service/balanced 7080:8080
Forwarding from 127.0.0.1:7080 -> 8080
Forwarding from [::1]:7080 -> 8080
Handling connection for 7080
user@debian:~$ curl localhost:7080
Request served by balanced-56c586bfb9-5qxvx
HTTP/1.1 GET /
Host: localhost:7080
Accept: /
User-Agent: curl/7.74.0
View plugin list
user@debian:~$ minikube addons list
|—————————–|———-|——– ——|———————————-|
| ADDON NAME | PROFILE | STATUS | MAINTAINER | ||
|---|---|---|---|---|---|
| ambassador | minikube | disabled | 3rd party (Ambassador) | ||
| auto-pause | minikube | disabled | |||
| cloud-spanner | minikube | disabled | |||
| csi-hostpath-driver | minikube | disabled | Kubernetes | ||
| dashboard | minikube | disabled | Kubernetes | ||
| default-storageclass | minikube | enabled? | Kubernetes | ||
| efk | minikube | disabled | 3rd party (Elastic) | ||
| freshpod | minikube | disabled | |||
| gcp-auth | minikube | disabled | |||
| gvisor | minikube | disabled | |||
| headlamp | minikube | disabled | 3rd party (kinvolk.io ) | ||
| helm-tiller | minikube | disabled | 3rd party (Helm) | ||
| inaccel | minikube | disabled | 3rd party (InAccel | ||
| [[email protected]]) | |||||
| ingress | minikube | disabled | Kubernetes | ||
| ingress-dns | minikube | disabled | |||
| istio | minikube | disabled | 3rd party (Istio) | ||
| istio-provisioner | minikube | disabled | 3rd party (Istio) | ||
| kong | minikube | disabled | 3rd party (Kong HQ) | ||
| kubevirt | minikube | disabled | 3rd party (KubeVirt) | ||
| logviewer | minikube | disabled | 3rd party (unknown) | ||
| metallb | minikube | disabled | 3rd party (MetalLB) | ||
| metrics-server | minikube | disabled | Kubernetes | ||
| nvidia-driver-installer | minikube | disabled | |||
| nvidia-gpu-device-plugin | minikube | disabled | 3rd party (Nvidia) | ||
| olm | minikube | disabled | 3rd party (Operator Framework) | ||
| pod-security-policy | minikube | disabled | 3rd party (unknown) | ||
| portainer | minikube | disabled | 3rd party (Portainer.io) | ||
| registry | minikube | disabled | |||
| registry-aliases | minikube | disabled | 3rd party (unknown) | ||
| registry-creds | minikube | disabled | 3rd party (UPMC Enterprises) | ||
| storage-provisioner | minikube | enabled? | |||
| storage-provisioner-gluster | minikube | disabled | disabled | td> | 3rd party (Gluster) |
| volumesnapshots | minikube | disabled | Kubernetes | ||
| —————————– | – ——— | ————– | ————- ——————- | ||
| Web Meter | |||||
| user@debian:~$ minikube dashboard –url | |||||
| Verifying dashboard operation… | |||||
| Launching proxy … | |||||
| ? ? Verifying proxy health… | |||||
| http://127.0.0.1: 38603/api/v1/namespaces/kubernetes-dashboard/services/http:kubernetes-dashboard:/proxy/ | |||||
| Clean up environment | |||||
| user@debian:~ $ minikube stop | |||||
| ? Stopping node “minikube” … | |||||
| Connection to localhost closed by remote host. | |||||
| 1 node stopped. |
user@debian:~$ minikube delete –all
Removing “minikube” in qemu2…
Removed all traces of the “minikube” cluster.
Successfully deleted all configuration files
Lala Podo
Copyright ? 2023 – LalaPodo Education INC. All rights reserved.