Install Minikube ubuntu 18.04

Install Minikube ubuntu 18.04

referencias: https://kubernetes.io/docs/setup/learning-environment/minikube/

bext@bext-VPCF13WFX:~$ curl -Lo minikube https://storage.googleapis.com/minikube/releases/v1.2.0/minikube-linux-amd64
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 39.8M  100 39.8M    0     0   455k      0  0:01:29  0:01:29 --:--:--  498k

bext@bext-VPCF13WFX:~$ chmod +x minikube
bext@bext-VPCF13WFX:~$ sudo cp minikube /usr/local/bin
[sudo] password for bext: 
bext@bext-VPCF13WFX:~$ rm minikube
bext@bext-VPCF13WFX:~$ 
 

Podemos eliminar el borrar minikube, pero tendremos que agregarlo al PATH.

1.- Arrancamos minikube y creamos un cluster

bext@bext-VPCF13WFX:~$ minikube start -p micluster
😄  minikube v1.2.0 on linux (amd64)
🔥  Creating virtualbox VM (CPUs=2, Memory=2048MB, Disk=20000MB) ...
🐳  Configuring environment for Kubernetes v1.15.0 on Docker 18.09.6
💾  Downloading kubeadm v1.15.0
💾  Downloading kubelet v1.15.0
🚜  Pulling images ...
🚀  Launching Kubernetes ... 
⌛  Verifying: apiserver proxy etcd scheduler controller dns
🏄  Done! kubectl is now configured to use "micluster"
bext@bext-VPCF13WFX:~$ 

Se ha creado un minikube context llamado minikube. esto se hace automáticamente, manualmente se hace con
kubectl config use-context minikube

o se pasa como parametro
kubectl get pods --context=minikube

Podemos correr el dashboard especificamos el nombre del cluster ya que lo creamos con nombre micluster.

bext@bext-VPCF13WFX:~$ minikube dashboard -p micluster
🔌  Enabling dashboard ...
🤔  Verifying dashboard health ...
🚀  Launching proxy ...
🤔  Verifying proxy health ...
🎉  Opening http://127.0.0.1:38919/api/v1/namespaces/kube-system/services/http:kubernetes-dashboard:/proxy/ in your default browser...

Probamos borrando el cluster

bext@bext-VPCF13WFX:~$ minikube delete
🙄  "minikube" cluster does not exist
🙄  "minikube" profile does not exist
bext@bext-VPCF13WFX:~$ minikube delete -p micluster
🔥  Deleting "micluster" from virtualbox ...
💔  The "micluster" cluster has been deleted.
bext@bext-VPCF13WFX:~$ 

Cremos de nuevo pero con nombre de cluster por default minikube

bext@bext-VPCF13WFX:~$ minikube start
😄  minikube v1.2.0 on linux (amd64)
🔥  Creating virtualbox VM (CPUs=2, Memory=2048MB, Disk=20000MB) ...
🐳  Configuring environment for Kubernetes v1.15.0 on Docker 18.09.6
🚜  Pulling images ...
🚀  Launching Kubernetes ... 
⌛  Verifying: apiserver proxy etcd scheduler controller dns
🏄  Done! kubectl is now configured to use "minikube"

minikube usa la imagen boot2docker con user y passwork:

user: docker
pass: tcuser

2.-  Interactuamos con el cluster usando kubectl, usamos la imagen echoserver y la exponemos al puerto 8080

bext@bext-VPCF13WFX:~$ kubectl run prueba-minikube --image=k8s.gcr.io/echoserver:1.10 --port=8080
kubectl run --generator=deployment/apps.v1 is DEPRECATED and will be removed in a future version. Use kubectl run --generator=run-pod/v1 or kubectl create instead.
deployment.apps/prueba-minikube created

 3.- Para acceder a prueba-minikube debemos exponerlo como servicio.

bext@bext-VPCF13WFX:~$ kubectl expose deployment prueba-minikube --type=NodePort
service/prueba-minikube exposed

4.- Debemos esperar un poco a que se esponga el servicio

bext@bext-VPCF13WFX:~$ kubectl get pod
NAME                             READY   STATUS    RESTARTS   AGE
prueba-minikube-69d8887f-fl5fm   1/1     Running   0          7m6s
bext@bext-VPCF13WFX:~$ 

5.- obtenemos la url de donde se expuso el servicio prueba-minikube, y la accesamos.

bext@bext-VPCF13WFX:~$ minikube service prueba-minikube --url
http://192.168.99.116:30950

bext@bext-VPCF13WFX:~$ curl http://192.168.99.116:30950


Hostname: prueba-minikube-69d8887f-fl5fm

Pod Information:
 -no pod information available-

Server values:
 server_version=nginx: 1.13.3 - lua: 10008

Request Information:
 client_address=172.17.0.1
 method=GET
 real path=/
 query=
 request_version=1.1
 request_scheme=http
 request_uri=http://192.168.99.116:8080/

Request Headers:
 accept=*/*
 host=192.168.99.116:30950
 user-agent=curl/7.58.0

Request Body:
 -no body in request-

bext@bext-VPCF13WFX:~$ 

6.- Borramos el servicio prueba-minikube

bext@bext-VPCF13WFX:~$ kubectl delete services prueba-minikube
service "prueba-minikube" deleted

7.- Borramos el deployment prueba-minikube

bext@bext-VPCF13WFX:~$ kubectl delete deployment prueba-minikube
deployment.extensions "prueba-minikube" deleted

8.- Detemenos el cluster local minikube

bext@bext-VPCF13WFX:~$ minikube stop
✋  Stopping "minikube" in virtualbox ...
🛑  "minikube" stopped.

9.- Borramos el cluster local minikube

bext@bext-VPCF13WFX:~$ minikube delete
🔥  Deleting "minikube" from virtualbox ...
💔  The "minikube" cluster has been deleted.

eot