如何使用Traefik v2.3在Docker上使用Sticky会话

Question

如何在Traefik v2.3中使用Sticky会话？

当我在docker compose文件中启用以下行时，我的docker服务(例如。http://192.168.0.1:9086)不要工作。

- "traefik.http.services.mynginximage2.loadBalancer.sticky.cookie=true"

你知道为什么粘性会话不起作用吗？

是否可以通过服务的标签来建立会话亲和性？

以下是我的docker撰写文件：

version: "3.8"
services:
traefik:
image: traefik:v2.3
deploy:
mode: global
networks:
- traefik-net
command:
#- "--log.level=DEBUG"
- "--api.insecure=true"
- "--providers.docker=true"
- "--providers.docker.exposedbydefault=false"
- "--entrypoints.web.address=:80"
- "--entrypoints.mynginximage2_ep.address=:8086"
ports:
- 80:80
- 9086:8086
- 8080:8080
volumes:
- "/var/run/docker.sock:/var/run/docker.sock:ro"
whoami:
image: "traefik/whoami"
deploy:
replicas: 2
networks:
- traefik-net
labels:
- "traefik.enable=true"
- "traefik.http.routers.whoami.entrypoints=web"
- "traefik.http.routers.whoami.rule=Host(`192.168.0.1`) || Host(`192.168.0.2`)"
#- "traefik.http.services.whoami.loadBalancer.sticky.cookie=true"
- "traefik.http.services.whoami-service.loadbalancer.server.port=80"
mynginximage2:
image: mynginximage2
deploy:
replicas: 2
networks:
- traefik-net
#ports:
#  - 9080:8086
labels:
- "traefik.enable=true"
- "traefik.http.routers.mynginximage2.entrypoints=mynginximage2_ep"
- "traefik.http.routers.mynginximage2.rule=Host(`192.168.0.1`) || Host(`192.168.0.2`)"
#- "traefik.http.services.mynginximage2.loadBalancer.sticky.cookie=true"
- "traefik.http.services.mynginximage2-service.loadbalancer.server.port=8086"      
networks:
traefik-net:
external: true
name: traefik-net

Answer 1

当我启用粘性会话功能时，我发现了为什么我的Traefik路由器不工作的问题。解决方案是每个服务都有一个不同的cookie名称。所以，我添加了饼干名称。例如：

version: "3.8"
services:
#...
whoami:
#...
labels:
- "traefik.enable=true"
- "traefik.http.routers.whoami.entrypoints=web"
- "traefik.http.routers.whoami.rule=Host(`192.168.0.1`) || Host(`192.168.0.2`)"
- "traefik.http.services.whoami-service.loadBalancer.sticky.cookie=true"
- "traefik.http.services.whoami-service.loadBalancer.sticky.cookie.name=whoami_cookie_name"
- "traefik.http.services.whoami-service.loadbalancer.server.port=80"
mynginximage2:
#...
labels:
- "traefik.enable=true"
- "traefik.http.routers.mynginximage2.entrypoints=mynginximage2_ep"
- "traefik.http.routers.mynginximage2.rule=Host(`192.168.0.1`) || Host(`192.168.0.2`)"
- "traefik.http.services.mynginximage2-service.loadBalancer.sticky.cookie=true"
- "traefik.http.services.mynginximage2-service.loadBalancer.sticky.cookie.name=mynginximage2_cookie_name"
- "traefik.http.services.mynginximage2-service.loadbalancer.server.port=8086"      
#...