问题描述
根据APIM官方文档，创建Self-hosted 网关在AKS中( 使用 YAML 将自承载网关部署到 Kubernetes ：https://docs.azure.cn/zh-cn/api-management/how-to-deploy-self-hosted-gateway-kubernetes)，但是访问AKS中Services的Endpoint，得到的确实 404页面。
{ "statusCode": 404, "message": "Resource not found" }
访问截图：
查看AKS POD的日志，也是显示404 错误
PS C:\> kubectl get pods NAME READY STATUS RESTARTS AGE lbapimselftest01-77f5b8db75-7skq4 1/1 Running 0 5h24m node-debugger-aks-agentpool-36712949-vmss000000-dlf6h 1/1 Running 0 4h57m node-debugger-aks-agentpool-36712949-vmss000000-kv2ln 0/1 Completed 0 5h9m sputnik-metrics-965c64dbc-zt94k 2/2 Running 0 5h48m PS C:\> kubectl logs lbapimselftest01-77f5b8db75-7skq4 ... ... [Info] 2023-10-16T11:26:38.139 [GatewayLogs], isRequestSuccess: False, totalTime: 0, category: GatewayLogs, callerIpAddress: 18.20.91.9, timeGenerated: 2023-10-16T11:26:38.139, region: ChinaNorth3, correlationId: 12909eb4-8dc4-438b-b27d-c667aca4852a, method: GET, url: http://14.6.8.17/echo/resource?param1=sample¶m2=test, responseCode: 404, responseSize: 198, cache: none, clientProtocol: HTTP/1.1, lastError: { "source": "configuration", "reason": "OperationNotFound", "message": "Unable to match incoming request to an operation.", "section": "backend" }, correlationId: 12909eb4-8dc4-438b-b27d-c667aca4852a [Info] 2023-10-16T11:26:41.435 [GatewayLogs], isRequestSuccess: False, totalTime: 0, category: GatewayLogs, callerIpAddress: 18.20.91.9, timeGenerated: 2023-10-16T11:26:41.435, region: ChinaNorth3, correlationId: cd4ad591-c3fa-4241-8dca-e10370c8d776, method: GET, url: http://14.6.8.17/, responseCode: 404, responseSize: 198, cache: none, clientProtocol: HTTP/1.1, lastError: { "source": "configuration", "reason": "OperationNotFound", "message": "Unable to match incoming request to an operation.", "section": "backend" }, correlationId: cd4ad591-c3fa-4241-8dca-e10370c8d776
问题解答
首先，需要查看APIM Self-hosted Gateway是否有关联到被访问的API，测试中所使用的是echo API。
再次访问API接口：http://xxx.xxx.xxx.xxx/echo/resource?param1=sample¶m2=test, 依旧是404，就需要查看是否是API的设定中是否允许HTTP访问，
所以，判断这是因为APIs的设置中，只允许了HTTPS访问。当修改为HTTP(S)后，HTTP/HTTPS都可以访问成功。解决了最开始访问出现404的问题。
总结，需要检查APIM中APIs的两个设定：
1）是否为此API添加到 self-hosted gateway
2）访问中配置的是否只能HTTP (HTTPS) 访问
参考资料
使用 YAML 将自承载网关部署到 Kubernetes ： https://docs.azure.cn/zh-cn/api-management/how-to-deploy-self-hosted-gateway-kubernetes
Azure API Management Self-hosted Gateway - SOAP API not working : https://learn.microsoft.com/en-us/answers/questions/1152222/azure-api-management-self-hosted-gateway-soap-api?page=1
