Kubernetes 部署指南

HAProxy Kubernetes Ingress Controller 提供了在 K8s 环境中使用 HAProxy 作为 Ingress 的能力。

Helm 安装

helm repo add haproxytech https://haproxytech.github.io/helm-charts
helm repo update
kubectl create namespace ingress-controller
helm install haproxy-ingress haproxytech/kubernetes-ingress     --namespace ingress-controller     --set controller.ingressClassResource.name=haproxy

基础 Ingress 配置

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: myapp-ingress
  annotations:
    kubernetes.io/ingress.class: haproxy
spec:
  tls:
    - hosts:
        - myapp.example.com
      secretName: myapp-tls
  rules:
    - host: myapp.example.com
      http:
        paths:
          - path: /api
            pathType: Prefix
            backend:
              service:
                name: api-service
                port:
                  number: 8080

常用注解

注解	说明
kubernetes.io/ingress.class	指定 Ingress 类
haproxy.org/load-balance	负载均衡算法
haproxy.org/rewrite-target	路径重写
haproxy.org/rate-limit-paths	速率限制

健康检查注解

metadata:
  annotations:
    haproxy.org/health-check: "/healthz"
    haproxy.org/health-check-interval: "5"

故障排查

kubectl get pods -n ingress-controller
kubectl logs -n ingress-controller -l app.kubernetes.io/name=haproxy-ingress