Minikube: Primeiros Passos
Para conectar-se ao cluster do Kubernetes, o kubectl precisa saber sobre o master-node e das credenciais para se conectar a ele.
1) Levantando o Minikube
Para levantar o minikube, basta executar o comando: "minikube start", mas no meu caso prefiro utilizar o virtualbox, então preciso invormar o driver
minikube start --vm-driver=virtualbox
Resultado:
😄 minikube v0.34.1 on darwin (amd64) 💡 Tip: Use 'minikube start -p <name>' to create a new cluster, or 'minikube delete' to delete this one. 🏃 Re-using the currently running virtualbox VM for "minikube" ... ⌛ Waiting for SSH access ... 📶 "minikube" IP address is 192.168.99.100 🐳 Configuring Docker as the container runtime ... ✨ Preparing Kubernetes environment .. 🚜 Pulling images required by Kubernetes v1.13.3 ... 🔄 Relaunching Kubernetes v1.13.3 using kubeadm ... ⌛ Waiting for kube-proxy to come back up ... 🤔 Verifying component health ..... 💗 kubectl is now configured to use "minikube" 🏄 Done! Thank you for using minikube!
Informações do cluser (kubectl cluster-info)
2) Verifique as informações do clusters Kubernetes
kubectl cluster-info
Resultado:
Kubernetes master is running at https://192.168.99.100:8443 KubeDNS is running at https://192.168.99.100:8443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.
Usando o Kubernetes Dashboard
Através do comando (minikube dashboard)
1) Vamos habilitar o Kubernetes Dashboard no Minikube através do comando:
minikube dashboard
Resultado:
Enabling dashboard ... 🤔 Verifying dashboard health ... 🚀 Launching proxy ... 🤔 Verifying proxy health ... 🎉 Opening http://127.0.0.1:55956/api/v1/namespaces/kube-system/services/http:kubernetes-dashboard:/proxy/ in your default browser...
Automaticamente é aberto o browser no dashboard do K8s.
Através do comando (kubectl proxy)
No passo anterior, se você executar um Ctrl+C, o dashboard é fechado.
Para evitarmos isso executamos o comando:
kubectl proxy
Basta acessar a url
http://127.0.0.1:8001/api/v1/namespaces/kube-system/services/http:kubernetes-dashboard:/proxy/#!/namespace?namespace=default