k8s 1.22.10 Ingress-nginx 的部署

1. 创建ingress

ingress-nginx/index.md at controller-v1.1.3 · kubernetes/ingress-nginx (github.com)

源文件地址：ingress-nginx/index.md at controller-v1.1.3 · kubernetes/ingress-nginx (github.com)

mkdir -p /root/ingress-install && cd /root/ingress-install
wget https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.1.3/deploy/static/provider/baremetal/deploy.yaml

cat deploy.yaml | grep image:
image: k8s.gcr.io/ingress-nginx/controller:v1.1.3@sha256:31f47c1e202b39fadecf822a9b76370bd4baed199a005b3e7d4d1455f4fd3fe2
image: k8s.gcr.io/ingress-nginx/kube-webhook-certgen:v1.1.1@sha256:64d8c73dca984af206adf9d6d7e46aa550362b1d7a01f3a0a91b20cc67868660
image: k8s.gcr.io/ingress-nginx/kube-webhook-certgen:v1.1.1@sha256:64d8c73dca984af206adf9d6d7e46aa550362b1d7a01f3a0a91b20cc67868660

# 替换镜像
sed  -i 's#k8s.gcr.io/ingress-nginx/controller:v1.1.3@sha256:31f47c1e202b39fadecf822a9b76370bd4baed199a005b3e7d4d1455f4fd3fe2#registry.cn-hangzhou.aliyuncs.com/imges/controller:v1.1.3#' deploy.yaml
sed  -i 's#k8s.gcr.io/ingress-nginx/kube-webhook-certgen:v1.1.1@sha256:64d8c73dca984af206adf9d6d7e46aa550362b1d7a01f3a0a91b20cc67868660#registry.cn-hangzhou.aliyuncs.com/chenby/kube-webhook-certgen:v1.1.1#' deploy.yaml

# 起pod
kubectl apply -f .

POD_NAMESPACE=ingress-nginx
POD_NAME=$(kubectl get pods -n $POD_NAMESPACE -l app.kubernetes.io/name=ingress-nginx --field-selector=status.phase=Running -o name)
kubectl exec $POD_NAME -n $POD_NAMESPACE -- /nginx-ingress-controller --version

kubectl get pod -n ingress-nginx
NAME                                        READY   STATUS      RESTARTS   AGE
ingress-nginx-admission-create-shff4        0/1     Completed   0          22m
ingress-nginx-admission-patch-chhcw         0/1     Completed   0          22m
ingress-nginx-controller-78cc7f865b-pd4xw   1/1     Running     0          22m

注：镜像已经从外网上传到自己在阿里云的镜像中心。

2. 启用后端，写入配置文件执行

cat > backend.yaml <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: default-http-backend
  labels:
    app.kubernetes.io/name: default-http-backend
  namespace: kube-system
spec:
  replicas: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: default-http-backend
  template:
    metadata:
      labels:
        app.kubernetes.io/name: default-http-backend
    spec:
      terminationGracePeriodSeconds: 60
      containers:
      - name: default-http-backend
        image: registry.cn-hangzhou.aliyuncs.com/imges/defaultbackend-amd64:1.5 
        livenessProbe:
          httpGet:
            path: /healthz
            port: 8080
            scheme: HTTP
          initialDelaySeconds: 30
          timeoutSeconds: 5
        ports:
        - containerPort: 8080
        resources:
          limits:
            cpu: 10m
            memory: 20Mi
          requests:
            cpu: 10m
            memory: 20Mi
---
apiVersion: v1
kind: Service
metadata:
  name: default-http-backend
  namespace: kube-system
  labels:
    app.kubernetes.io/name: default-http-backend
spec:
  ports:
  - port: 80
    targetPort: 8080
  selector:
    app.kubernetes.io/name: default-http-backend
EOF

3. 测试

mkdir -p /root/ingress-install/test && cd /root/ingress-install/test
# Deployment
cat > mynginx-Template.yaml <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp-deploy
spec:
  replicas: 3
  selector:
    matchLabels:
      app: mynginx
      release: nginxapp
  template:
    metadata:
      labels:
        app: mynginx
        release: nginxapp
        env: test
    spec:
      containers:
      - name: nginx
        image: nginx
EOF

# svc
cat > mynginx-svc.yaml <<EOF
apiVersion: v1
kind: Service
metadata:
  name: nginx-svc
spec:
  selector:
    app: mynginx
  ports:
  - port: 80
    targetPort: 80
    protocol: TCP
EOF

# Ingress
cat > mynginx-Ingress.yaml <<EOF
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: nginx-test
  namespace: default
spec:
  ingressClassName: nginx  # 使用 nginx 的 IngressClass（关联的 ingress-nginx 控制器）
  rules:
  - host: www.mynginx.com # 将域名映射到 my-nginx 服务
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:  # 将所有请求发送到 my-nginx 服务的 80 端口
            name: nginx-svc
            port:
              number: 80
EOF