Kubernetes & Docker

Langkah-langkah Setup Minikube + Kubernetes

1. Install Tools Dasar

Pastikan sudah install:

• Docker

• Kubectl

• Minikube

• Kubeadm (opsional, untuk manual cluster setup)

👉 Cek versinya:

docker --version
kubectl version --client
kubeadm version
minikube version

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2. Konfigurasi Docker

Supaya tidak perlu sudo tiap kali pakai docker:

# Buat group docker (jika belum ada)
sudo groupadd docker

# Tambahkan user ke group docker
sudo usermod -aG docker $USER

➡️ Logout & login ulang agar efektif.
Coba tes:

docker run hello-world

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3. Aktifkan Service Docker & Containerd

Supaya otomatis jalan saat boot:

sudo systemctl enable docker.service
sudo systemctl enable containerd.service

Lalu start:

sudo systemctl start docker.service
sudo systemctl start containerd.service

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4. Bersihkan Minikube Lama (opsional)

Jika sebelumnya pernah setup Minikube:

minikube delete --all

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5. Jalankan Minikube

Ada dua opsi:

• Driver Docker (disarankan):

minikube start --driver=docker

• Default Driver:

minikube start

Cek status:

minikube status

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6. Cek Kubernetes Cluster

Tes apakah cluster aktif:

kubectl get nodes
kubectl get pods -A

Kalau berhasil, biasanya output kubectl get nodes akan menampilkan 1 node dengan status Ready.

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7. Verifikasi API Server

Pastikan kube-apiserver jalan di dalam container:

sudo docker ps | grep kube-apiserver

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8. Jalankan Aplikasi Uji

Misalnya jalankan Pod sederhana:

kubectl create deployment hello-node --image=k8s.gcr.io/echoserver:1.4
kubectl expose deployment hello-node --type=NodePort --port=8080

Cek:

kubectl get pods
kubectl get svc

Untuk akses dari browser:

minikube service hello-node

✅ Alur singkat

1. Install tools (Docker, Kubectl, Minikube, Kubeadm).

2. Konfigurasi Docker user.

3. Enable Docker & Containerd.

4. Hapus cluster lama (opsional).

5. Start Minikube.

6. Tes kubectl.

7. Cek kube-apiserver.

8. Deploy aplikasi test.

Ini dia diagram alur setup Minikube + Kubernetes yang lebih mudah dipahami secara visual:

🔽 Mulai dari install tools → konfigurasi Docker → start Minikube → cek cluster → deploy aplikasi test.

📝 Quick Notes Setup Minikube

1. Install tools → Docker, Kubectl, Minikube, Kubeadm.

2. Cek versi → docker --version, kubectl version --client, kubeadm version, minikube version.

3. Atur Docker user → sudo groupadd docker && sudo usermod -aG docker $USER → logout/login.

4. Enable services → sudo systemctl enable/start docker.service containerd.service.

5. Hapus cluster lama → minikube delete --all (opsional).

6. Start cluster → minikube start --driver=docker.

7. Cek status → kubectl get nodes, kubectl get pods -A.

8. Verifikasi API server → docker ps | grep kube-apiserver.

9. Deploy test app → kubectl create deployment hello-node --image=k8s.gcr.io/echoserver:1.4.

10. Expose service → kubectl expose deployment hello-node --type=NodePort --port=8080.

11. Akses app → minikube service hello-node.

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⚡Dengan catatan ini, kalau mau setup ulang cluster, tinggal ikuti urutannya.

🚀 setup-minikube.sh

#!/bin/bash

echo "=== 🚀 Setup Minikube + Kubernetes ==="

# 1. Cek versi tools
echo "[1] Mengecek versi tools..."
docker --version
kubectl version --client
kubeadm version
minikube version

# 2. Konfigurasi Docker user
echo "[2] Konfigurasi Docker group & user..."
sudo groupadd docker 2>/dev/null
sudo usermod -aG docker $USER

# 3. Enable & start Docker + Containerd
echo "[3] Mengaktifkan Docker & Containerd..."
sudo systemctl enable docker.service
sudo systemctl enable containerd.service
sudo systemctl start docker.service
sudo systemctl start containerd.service

# 4. Tes Docker
echo "[4] Menjalankan tes Docker (hello-world)..."
docker run hello-world

# 5. Hapus cluster lama (opsional)
echo "[5] Menghapus cluster Minikube lama..."
minikube delete --all

# 6. Start Minikube dengan Docker
echo "[6] Memulai Minikube..."
minikube start --driver=docker

# 7. Cek status cluster
echo "[7] Mengecek status cluster..."
kubectl get nodes
kubectl get pods -A

# 8. Deploy aplikasi test
echo "[8] Deploy aplikasi hello-node..."
kubectl create deployment hello-node --image=k8s.gcr.io/echoserver:1.4 --dry-run=client -o yaml | kubectl apply -f -
kubectl expose deployment hello-node --type=NodePort --port=8080

# 9. Akses aplikasi
echo "[9] Membuka service hello-node..."
minikube service hello-node

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📌 Cara Pakai

1. Simpan file ini → setup-minikube.sh.

2. Beri izin eksekusi:

   chmod +x setup-minikube.sh
   

3. Jalankan script:

   ./setup-minikube.sh
   

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⚡ Script ini akan langsung install cluster, jalanin Docker test, start Minikube, deploy pod sederhana, expose service, sampai membuka akses ke browser.

🗑️ reset-minikube.sh

#!/bin/bash

echo "=== 🗑️ Reset Minikube + Docker ==="

# 1. Stop & delete semua cluster Minikube
echo "[1] Menghapus semua cluster Minikube..."
minikube stop
minikube delete --all --purge

# 2. Hapus konfigurasi Minikube
echo "[2] Menghapus konfigurasi Minikube..."
rm -rf ~/.minikube
rm -rf ~/.kube

# 3. Hentikan semua container Docker yang masih jalan
echo "[3] Menghentikan semua container Docker..."
docker stop $(docker ps -aq) 2>/dev/null

# 4. Hapus semua container & image Docker
echo "[4] Menghapus semua container & image Docker..."
docker rm -f $(docker ps -aq) 2>/dev/null
docker rmi -f $(docker images -q) 2>/dev/null
docker volume prune -f
docker system prune -af --volumes

# 5. Restart Docker service
echo "[5] Restart Docker service..."
sudo systemctl restart docker.service
sudo systemctl restart containerd.service

echo "✅ Reset selesai! Sistem siap untuk setup ulang Minikube."

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📌 Cara Pakai

1. Simpan file ini → reset-minikube.sh.

2. Beri izin eksekusi:

   chmod +x reset-minikube.sh
   

3. Jalankan script:

   ./reset-minikube.sh
   

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⚡ Script ini akan:

• Stop & hapus cluster Minikube.

• Bersihkan konfigurasi ~/.minikube & ~/.kube.

• Hapus semua container & image Docker (jadi Docker benar-benar fresh).

• Restart Docker & Containerd.

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Pastikan container minikube container sudah running seperti berikut: 

$ docker ps
CONTAINER ID   IMAGE                                 COMMAND                  CREATED       STATUS         PORTS                                                                                                                                  NAMES
58f46e1db165   gcr.io/k8s-minikube/kicbase:v0.0.47   "/usr/local/bin/entr…"   3 weeks ago   Up 6 minutes   127.0.0.1:32773->22/tcp, 127.0.0.1:32774->2376/tcp, 127.0.0.1:32775->5000/tcp, 127.0.0.1:32776->8443/tcp, 127.0.0.1:32777->32443/tcp   minikube

$ minikube start --driver=docker

Tentukan port supaya tidak dinamis, misal di port 8001

$ minikube dashboard --url --port 8001
🤔  Verifying dashboard health ...
🚀  Launching proxy ...
🤔  Verifying proxy health ...
http://127.0.0.1:8001/api/v1/namespaces/kubernetes-dashboard/services/http:kubernetes-dashboard:/proxy/