Minikube 로 Nginx 배포

“Minikube 로 Nginx 배포”

Minikube 는 단일 노드 Kubernetes Cluster를 가상머신에서 구동하는 도구입니다.

minikube를 이용하면 손쉽게 로컬에서 Kubernetes Cluster를 만들 수 있습니다.

[개 요]

✅ 종 류 : 프로그램/툴 설치

✅ 난이도 : ⭐

✅ 내용요약 : MiniKube를 사용하여 Nginx 배포

✅ 테스트환경 : ubuntu 22.04

✅ 관련직무 : 시스템&클라우드 엔지니어

1. docker 설치

1️⃣ docker 설치

curl -fsSL https://get.docker.com | sudo sh

[실행화면]

# Executing docker install script, commit: e5543d473431b782227f8908005543bb4389b8de
+ sh -c apt-get update -qq >/dev/null
+ sh -c DEBIAN_FRONTEND=noninteractive apt-get install -y -qq apt-transport-https ca-certificates curl >/dev/null
+ sh -c install -m 0755 -d /etc/apt/keyrings
+ sh -c curl -fsSL “https://download.docker.com/linux/ubuntu/gpg” | gpg –dearmor –yes -o /etc/apt/keyrings/docker.gpg
+ sh -c chmod a+r /etc/apt/keyrings/docker.gpg
+ sh -c echo “deb [arch=amd64 signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu jammy stable” > /etc/apt/sources.list.d/docker.list
+ sh -c apt-get update -qq >/dev/null
+ sh -c DEBIAN_FRONTEND=noninteractive apt-get install -y -qq docker-ce docker-ce-cli containerd.io docker-compose-plugin docker-ce-rootless-extras docker-buildx-plugin >/dev/null
+ sh -c docker version
Client: Docker Engine – Community
Version: 24.0.7
API version: 1.43
Go version: go1.20.10
Git commit: afdd53b
Built: Thu Oct 26 09:07:41 2023
OS/Arch: linux/amd64
Context: default

Server: Docker Engine – Community
Engine:
Version: 24.0.7
API version: 1.43 (minimum version 1.12)
Go version: go1.20.10
Git commit: 311b9ff
Built: Thu Oct 26 09:07:41 2023
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.6.26
GitCommit: 3dd1e886e55dd695541fdcd67420c2888645a495
runc:
Version: 1.1.10
GitCommit: v1.1.10-0-g18a0cb0
docker-init:
Version: 0.19.0
GitCommit: de40ad0

================================================================================

To run Docker as a non-privileged user, consider setting up the
Docker daemon in rootless mode for your user:

dockerd-rootless-setuptool.sh install

Visit https://docs.docker.com/go/rootless/ to learn about rootless mode.

To run the Docker daemon as a fully privileged service, but granting non-root
users access, refer to https://docs.docker.com/go/daemon-access/

WARNING: Access to the remote API on a privileged Docker daemon is equivalent
to root access on the host. Refer to the ‘Docker daemon attack surface’
documentation for details: https://docs.docker.com/go/attack-surface/

================================================================================

docker ps

[실행화면]

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

2. Minikube 설치

1️⃣ Minikube 설치

curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube_latest_amd64.deb

dpkg -i minikube_latest_amd64.deb

[실행화면]

Selecting previously unselected package minikube.
(Reading database … 69908 files and directories currently installed.)
Preparing to unpack minikube_latest_amd64.deb …
Unpacking minikube (1.32.0-0) …
Setting up minikube (1.32.0-0) …

minikube start

[실행화면]

😄 minikube v1.32.0 on Ubuntu 22.04 (kvm/amd64)
✨ Automatically selected the docker driver. Other choices: none, ssh
🛑 The “docker” driver should not be used with root privileges. If you wish to continue as root, use –force.
💡 If you are running minikube within a VM, consider using –driver=none:
📘 https://minikube.sigs.k8s.io/docs/reference/drivers/none/

❌ Exiting due to DRV_AS_ROOT: The “docker” driver should not be used with root privileges.

해당 error는 docker를 root권한으로 사용하려 했을 경우 나옵니다.

따라서 전용 사용자 계정을 추가로 생성해줘야 합니다.

2️⃣ 사용자 계정 생성

useradd -m -d /home/smileserv -s /bin/bash smileserv // /home/smilserv가 home 디렉터리인 smileserv 사용자 생성 
passwd smileserv // smileserv 비밀번호 설정
usermod -aG sudo smileserv // smileserv 계정 sudo 권한
usermod -aG docker smileserv // smileserv 계정 docker 권한
su smileserv

3️⃣ MiniKube 설치

Minikube start

[실행화면]

smileserv@minikube:~$ minikube start
😄 minikube v1.32.0 on Ubuntu 22.04 (kvm/amd64)
✨ Automatically selected the docker driver
📌 Using Docker driver with root privileges
👍 Starting control plane node minikube in cluster minikube
🚜 Pulling base image …
💾 Downloading Kubernetes v1.28.3 preload …
> preloaded-images-k8s-v18-v1…: 403.35 MiB / 403.35 MiB 100.00% 29.60 M
> gcr.io/k8s-minikube/kicbase…: 453.90 MiB / 453.90 MiB 100.00% 29.23 M
🔥 Creating docker container (CPUs=2, Memory=2200MB) …
🐳 Preparing Kubernetes v1.28.3 on Docker 24.0.7 …
▪ Generating certificates and keys …
▪ Booting up control plane …
▪ Configuring 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
💡 kubectl not found. If you need it, try: ‘minikube kubectl — get pods -A’
🏄 Done! kubectl is now configured to use “minikube” cluster and “default” namespace by default

3. kubectl 설치

1️⃣ kubectl 설치

curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"

sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
kubectl version

[실행화면]

smileserv@minikube:~$ kubectl version
Client Version: v1.29.0
Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3
Server Version: v1.28.3

4. nginx yaml 작성

vim nginx-deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deploy
spec:
replicas: 3
selector:
matchLabels:
app: nginx-app
template:
metadata:
labels:
app: nginx-app
spec:
containers:
– name: nginx-container
image: nginx:latest
ports:
– containerPort: 80

vim nginx-service.yaml

apiVersion: v1
kind: Service
metadata:
name: nginx-service
spec:
type: NodePort
selector:
app: nginx-app
ports:
– targetPort: 80
port: 80
nodePort: 30080

5. 배포

kubectl apply -f ./nginx-deployment.yaml

[실행화면]

smileserv@minikube:~$ kubectl apply -f ./nginx-deployment.yaml
deployment.apps/nginx-deploy created

kubectl get all

kubectl apply -f ./nginx-service.yaml

[실행화면]

smileserv@minikube:~$ kubectl apply -f ./nginx-service.yaml
service/nginx-service created

kubectl get all

minikube service nginx-service --url

[실행화면]

smileserv@minikube:~$ minikube service nginx-service –url
http://192.168.49.2:30080

“Minikube 로 Nginx 배포”

1. docker 설치

1️⃣ docker 설치

2. Minikube 설치

1️⃣ Minikube 설치

2️⃣ 사용자 계정 생성

3️⃣ MiniKube 설치

3. kubectl 설치

1️⃣ kubectl 설치

4. nginx yaml 작성

5. 배포

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