0

我在 k8 集群中部署了 2 个 spring app pod。每个副本 1 个。两者都有其集群 IP 服务公开服务。

  1. /upstream/agentLabs/makeotherTierCall应该转发到 prevlab 部署/agentLabs/makeOtherTierCall
  2. /downstream/basics/hello应该转发到 newlab 部署/basics/hello

我正在使用 ingress-nginx 使用以下规则重定向流量。

入口服务.yml

apiVersion: networking.k8s.io/v1
# UPDATE API
kind: Ingress
metadata:
  namespace: javaspace
  name: ingress-service
  annotations:
    kubernetes.io/ingress.class: 'nginx'
    nginx.ingress.kubernetes.io/use-regex: 'true'
    # ADD ANNOTATION
    nginx.ingress.kubernetes.io/rewrite-target: /$1
    # UPDATE ANNOTATION
spec:
  rules:
    - http:
        paths:
          - path: /upstream?(.*)
            # UPDATE PATH
            pathType: Prefix
            # ADD PATHTYPE
            backend:
              service:
                # UPDATE SERVICE FIELDS
                name: prevlab-cluster-ip-service
                port:
                  number: 8080
          - path: /downstream?(.*)
            # UPDATE PATH
            pathType: Prefix
            # ADD PATHTYPE
            backend:
              service:
                # UPDATE SERVICE FIELDS
                name: newlab-cluster-ip-service
                port:
                  number: 8080

问题是当我进行任何调用（1 和 2）时，入口控制器有时会正确转发流量，有时则不会，我得到 404。基本上，我观察到的是，或者流量被路由到两个集群-ip服务一个接一个。

例如。如果我发出/upstream/agentLabs/makeotherTierCall请求 2 次，首先它会错误地转发到 newlab cluster-ip 服务（返回 404），然后它会正确转发到 prevlab cluster-ip 服务（返回 200）。

ingress-nginx 控制器设置

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.0.1/deploy/static/provider/cloud/deploy.yaml

入口控制器日志

192.168.65.3 - - [24/Sep/2021:10:04:21 +0000] "GET /upstream/agentLabs/makeOtherTierCall HTTP/2.0" 200 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36" 45 0.008 [javaspace-prevlab-cluster-ip-service-8080] [] 10.1.0.181:8080 12 0.007 200 24ae53531ce4d7109004f81e79534ca4
192.168.65.3 - - [24/Sep/2021:10:04:21 +0000] "GET /upstream/agentLabs/makeOtherTierCall HTTP/2.0" 404 286 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36" 45 0.006 [javaspace-prevlab-cluster-ip-service-8080] [] 10.1.0.179:8080 286 0.005 404 1a32efb3a9dc21cce01b908afeb0248a
192.168.65.3 - - [24/Sep/2021:10:04:22 +0000] "GET /upstream/agentLabs/makeOtherTierCall HTTP/2.0" 200 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36" 45 0.007 [javaspace-prevlab-cluster-ip-service-8080] [] 10.1.0.181:8080 12 0.007 200 542bd4abba25be5a416deca1152cb29b
192.168.65.3 - - [24/Sep/2021:10:04:22 +0000] "GET /upstream/agentLabs/makeOtherTierCall HTTP/2.0" 404 286 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36" 45 0.008 [javaspace-prevlab-cluster-ip-service-8080] [] 10.1.0.179:8080 286 0.007 404 aaea8e3bf60dab81ef7454d51863a22d 

192.168.65.3 - - [24/Sep/2021:10:07:23 +0000] "GET /downstream/basics/hello HTTP/2.0" 404 306 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36" 35 0.009 [javaspace-newlab-cluster-ip-service-8080] [] 10.1.0.181:8080 306 0.009 404 178bd79cc71b73f7a337a2652322d65f
192.168.65.3 - - [24/Sep/2021:10:07:23 +0000] "GET /downstream/basics/hello HTTP/2.0" 200 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36" 35 0.002 [javaspace-newlab-cluster-ip-service-8080] [] 10.1.0.179:8080 12 0.003 200 280d2b7974ae38a467237cc6cf437b98
192.168.65.3 - - [24/Sep/2021:10:07:24 +0000] "GET /downstream/basics/hello HTTP/2.0" 404 306 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36" 35 0.008 [javaspace-newlab-cluster-ip-service-8080] [] 10.1.0.181:8080 306 0.008 404 4e237232b4c53c9bb90e7bb59c15e916
192.168.65.3 - - [24/Sep/2021:10:07:24 +0000] "GET /downstream/basics/hello HTTP/2.0" 200 12 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36" 35 0.003 [javaspace-newlab-cluster-ip-service-8080] [] 10.1.0.179:8080 12 0.002 200 be0cf532a972ec0d783e15869470f579

使用 Docker Desktop 的 Kubernetes。Kubernetes 1.21.2

我在这里做错了什么？这是默认行为吗？我需要做一些额外的配置吗？

4

1 回答 1

1

没关系。我犯了一个很小但很愚蠢的错误。万一有人在这里闲逛：我为我的 2 个后端服务使用了相同的标签。并且对于每个集群 IP 服务都使用相同的选择器。因此，我看到了不一致的行为。

于 2021-09-27T19:06:43.200 回答