go network_error ai_generated true

rpc错误：代码=不可用 描述=连接错误：拨号tcp：在127.0.0.11:53上查找主机：无此主机

rpc error: code = Unavailable desc = connection error: dial tcp: lookup host on 127.0.0.11:53: no such host

ID: go/grpc-unavailable-connection-error

其他格式: JSON · Markdown 中文 · English
80%修复率
88%置信度
0证据数
2024-03-15首次发现

版本兼容性

版本状态引入弃用备注
1.22 active — — —
1.23 active — — —

根因分析

目标gRPC服务器主机名的DNS解析失败，通常是由于DNS配置错误或客户端连接字符串中的主机名不正确。

English

DNS resolution fails for the target gRPC server hostname, often due to misconfigured DNS or incorrect hostname in the client connection string.

generic

解决方案

  1. 90% 成功率 Use IP address instead of hostname in the gRPC target. 
    conn, err := grpc.Dial("192.168.1.100:50051", grpc.WithInsecure())
  2. 85% 成功率 Configure custom DNS resolver in Go net package. 
    net.DefaultResolver = &net.Resolver{PreferGo: true, Dial: func(ctx context.Context, network, address string) (net.Conn, error) { d := net.Dialer{}; return d.DialContext(ctx, "udp", "8.8.8.8:53") }}

无效尝试

常见但无效的做法:

  1. Retrying the same connection with backoff but not fixing DNS. 95% 失败

    DNS resolution remains broken; retries never succeed.

  2. Changing port number in the dial string. 98% 失败

    The issue is hostname resolution, not port; changing port doesn't help.