mirror of
https://github.com/yeasy/docker_practice.git
synced 2026-03-09 08:30:22 +00:00
100 lines
1.7 KiB
Go
100 lines
1.7 KiB
Go
## Kubernetes 实战练习
|
||
|
||
本章将通过一个具体的案例：部署一个 Nginx 网站，并为其配置 Service 和 Ingress，来串联前面学到的知识。
|
||
|
||
### 目标
|
||
|
||
1. 部署一个 Nginx Deployment。
|
||
2. 创建一个 Service 暴露 Nginx。
|
||
3. （可选）通过 Ingress 访问服务。
|
||
|
||
### 步骤 1：创建 Deployment
|
||
|
||
创建一个名为 `nginx-deployment.yaml` 的文件：
|
||
|
||
```yaml
|
||
apiVersion: apps/v1
|
||
kind: Deployment
|
||
metadata:
|
||
name: nginx-deployment
|
||
labels:
|
||
app: nginx
|
||
spec:
|
||
replicas: 2
|
||
selector:
|
||
matchLabels:
|
||
app: nginx
|
||
template:
|
||
metadata:
|
||
labels:
|
||
app: nginx
|
||
spec:
|
||
containers:
|
||
- name: nginx
|
||
image: nginx:1.24
|
||
ports:
|
||
- containerPort: 80
|
||
```
|
||
|
||
应用配置：
|
||
|
||
```bash
|
||
kubectl apply -f nginx-deployment.yaml
|
||
```
|
||
|
||
### 步骤 2：创建 Service
|
||
|
||
创建一个名为 `nginx-service.yaml` 的文件：
|
||
|
||
```yaml
|
||
apiVersion: v1
|
||
kind: Service
|
||
metadata:
|
||
name: nginx-service
|
||
spec:
|
||
selector:
|
||
app: nginx
|
||
ports:
|
||
- protocol: TCP
|
||
port: 80
|
||
targetPort: 80
|
||
type: NodePort # 使用 NodePort 方便本地测试
|
||
```
|
||
|
||
应用配置：
|
||
|
||
```bash
|
||
kubectl apply -f nginx-service.yaml
|
||
```
|
||
|
||
查看分配的端口：
|
||
|
||
```bash
|
||
kubectl get svc nginx-service
|
||
```
|
||
|
||
如果输出端口是 `80:30080/TCP`，你可以通过 `http://<NodeIP>:30080` 访问 Nginx。
|
||
|
||
### 步骤 3：模拟滚动更新（Rolling Update）
|
||
|
||
修改 `nginx-deployment.yaml`，将镜像版本改为 `nginx:latest`。
|
||
|
||
```bash
|
||
kubectl apply -f nginx-deployment.yaml
|
||
```
|
||
|
||
观察更新过程：
|
||
|
||
```bash
|
||
kubectl rollout status deployment/nginx-deployment
|
||
```
|
||
|
||
### 步骤 4：清理资源
|
||
|
||
练习结束后，记得清理资源：
|
||
|
||
```bash
|
||
kubectl delete -f nginx-service.yaml
|
||
kubectl delete -f nginx-deployment.yaml
|
||
```
|