GRPC_HTTP2_PING_TIMEOUT grpc network_error ai_generated true

不可用：gRPC HTTP2 ping 超时（10 秒后），关闭连接

UNAVAILABLE: grpc: HTTP2 ping timeout after 10s, closing connection

ID: grpc/http2-ping-timeout

其他格式: JSON · Markdown 中文 · English
85%修复率
88%置信度
1证据数
2024-01-10首次发现

版本兼容性

版本状态引入弃用备注
gRPC v1.48.x active — — —
gRPC v1.56.x active — — —
gRPC v1.63.x active — — —

根因分析

gRPC 客户端发送 HTTP/2 ping 但未在超时时间内收到服务器响应，表明网络问题或服务器过载。

English

gRPC client sent HTTP/2 pings but did not receive responses from the server within the timeout period, indicating network issues or server overload.

generic

官方文档

https://grpc.io/docs/guides/keepalive/#keepalive-ping-timeout

解决方案

  1. 增加客户端和服务器的 keepalive 超时时间：设置 `GRPC_ARG_KEEPALIVE_TIMEOUT_MS` 为 20000 毫秒（20 秒），确保服务器端也同步增加。
  2. 检查网络路径是否存在丢包或高延迟（使用 mtr 或 ping）。如果在负载均衡器后，确保支持 HTTP/2 ping 响应并设置适当的超时。
  3. 减少 keepalive ping 间隔（`GRPC_ARG_KEEPALIVE_TIME_MS`）到 10000 毫秒（10 秒），更快检测故障并重新连接。

无效尝试

常见但无效的做法:

  1. 65% 失败

    This only extends the wait for ping responses; if the network is unreliable, pings still fail, and the connection closes after a longer delay.

  2. 55% 失败

    Without pings, idle connections may be dropped by middleboxes (e.g., NATs, load balancers), leading to different errors like connection reset.

  3. 60% 失败

    This pings only when streams are active; if the issue is network latency, pings still time out.