Kubernetes环境下如何配置Traefik粘性会话

配置迁移方案 #

你只需要给已有的myapp Service添加对应Traefik注解即可完成粘性会话配置的迁移，不需要修改现有Ingress规则。

步骤1：修改Service配置

在你的myapp Service的metadata.annotations字段中新增以下3条配置：

traefik.ingress.kubernetes.io/service.sticky.cookie: "true"
traefik.ingress.kubernetes.io/service.sticky.cookie.name: "StickyCookieMyApp"
traefik.ingress.kubernetes.io/service.sticky.cookie.secure: "true"

完整Service示例

apiVersion: v1
kind: Service
metadata:
  name: myapp
  annotations:
    # 粘性会话配置
    traefik.ingress.kubernetes.io/service.sticky.cookie: "true"
    traefik.ingress.kubernetes.io/service.sticky.cookie.name: "StickyCookieMyApp"
    traefik.ingress.kubernetes.io/service.sticky.cookie.secure: "true"
spec:
  selector:
    app: myapp # 替换为你实际的Pod匹配标签
  ports:
    - port: 8080
      targetPort: 8080 # 替换为你实际的容器服务端口

可选方案：使用Traefik自定义资源配置

如果你使用Traefik原生的TraefikService和IngressRoute CRD管理路由，也可以直接在TraefikService中配置粘性会话：

apiVersion: traefik.containo.us/v1alpha1
kind: TraefikService
metadata:
  name: myapp-sticky-service
spec:
  weighted:
    services:
      - name: myapp
        port: 8080
  sticky:
    cookie:
      name: StickyCookieMyApp
      secure: true

配置完成后在IngressRoute的后端规则中引用该TraefikService即可生效。

内容的提问来源于stack exchange，提问作者Flavio Oliva