ECS.ServiceConnect.DNSResolution cloud network_error ai_generated true

ECS Service Connect：同一命名空间内服务端点的 DNS 解析失败

ECS Service Connect: DNS resolution failed for service endpoint within the same namespace

ID: cloud/aws-ecs-service-connect-dns-resolution-failure

其他格式: JSON · Markdown 中文 · English
78%修复率
83%置信度
1证据数
2024-06-12首次发现

版本兼容性

版本状态引入弃用备注
AWS ECS: latest active — — —
AWS Cloud Map: latest active — — —
Amazon VPC: any active — — —

根因分析

使用 ECS Service Connect 时，任务无法解析同一命名空间中服务的 DNS 名称，因为服务发现命名空间未正确关联到 VPC，或者由于服务连接配置错误导致服务的 DNS 记录未传播。

English

When using ECS Service Connect, tasks fail to resolve the DNS name of a service in the same namespace because the service discovery namespace is not properly associated with the VPC, or the service's DNS records are not propagated due to a misconfigured service connect configuration.

generic

官方文档

https://docs.aws.amazon.com/AmazonECS/latest/developerguide/service-connect.html

解决方案

  1. Verify that the Cloud Map namespace is associated with the correct VPC. Run 'aws servicediscovery list-namespaces' and check the VPC configuration. If missing, create a new namespace with 'aws servicediscovery create-http-namespace --name my-namespace --vpc vpc-12345'.
  2. Ensure the ECS task definition includes the 'awslogs' log driver and check the Service Connect logs for DNS queries using 'aws logs describe-log-groups' and filtering for 'DNS_RESOLUTION_FAILED'. Then update the service connect configuration with the correct 'clientAlias' and 'discoveryName'.

无效尝试

常见但无效的做法:

  1. 80% 失败

    Overrides the default AWS DNS resolver, breaking Service Connect's built-in DNS resolution for the namespace.

  2. 70% 失败

    IPs can change when tasks are redeployed or scaled; defeats the purpose of service discovery.

  3. 50% 失败

    Restarting doesn't fix the underlying DNS configuration issue; the new tasks will face the same resolution failure.