[I] In version 3.9.1 apisix, multiple ingress controllers are deployed in the same K8S cluster, corresponding to the same set of etcds, and consul is used for service discovery, and some apisix pods are forwarded after rolling updates, and the upstream node is considered unavailable and thus 503 [apisix-ingress-controller]

[via GitHub]

lvdb-wuzihong opened a new issue, #2405:
URL: https://github.com/apache/apisix-ingress-controller/issues/2405

   ### Description
   
   
![部署架构](https://github.com/user-attachments/assets/98d28499-a1e3-420b-88cf-d71edcc6b0ee)
   As shown in the image, the route is configured via CRD
   This is one of the routing configurations right now：
   apiVersion: apisix.apache.org/v2
   kind: ApisixRoute
   metadata:
     name: demo
     namespace: demo
   spec:
     http:
       - backends:
           - resolveGranularity: service
             serviceName: demo
             servicePort: 80
         match:
           hosts:
             - api.demo.com
           paths:
             - /*
         name: rule1
         plugin_config_name: demo
   If I don't add resolveGranularity: service, it will be forwarded after a 
while and there will be problems
   
   The consul service found the configuration with the problem:
   apiVersion: apisix.apache.org/v2
   kind: ApisixRoute
   metadata:
     name: demo
     namespace: demo
   spec:
     http:
       - match:
           hosts:
             - demo.com
           paths:
             - /*
         name: rule1
         plugin_config_name: demo
         upstreams:
           - name: demo
   ---
   apiVersion: apisix.apache.org/v2
   kind: ApisixUpstream
   metadata:
     name: demo
     namespace: demo
   spec:
     discovery:
       serviceName: demo
       type: consul
     retries: 5
   
   Is it a problem with the deployment architecture or something, because we 
didn't find a problem with consul, if there is a problem, there should be a 
problem with these multiple sets of apisix pods
   
   ### Environment
   
   - APISIX version 3.9.1
   - Operating system Linux apisix-57b7d7d8fb-7lz26 5.10.134-17.2.al8.x86_64 
apache/apisix#1 SMP Fri Aug 9 15:49:42 CST 2024 x86_64 GNU/Linux
   - OpenResty / Nginx version openresty/1.25.3.1
   - etcd version, etcdctl version: 3.5.15


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