logging - 配置 nginx 不记录 ELB 辅助健康检查

Question

Amazon Elastic Load Balancer (ELB) 定期执行运行状况检查:

In addition to the health check you configure for your load balancer, a second health check is performed by the service to protect against potential side-effects caused by instances being terminated without being deregistered. To perform this check, the load balancer opens a TCP connection on the same port that the health check is configured to use, and then closes the connection after the health check is completed.

nginx 会记录这些事件并显示 400 错误，这种错误每分钟会发生多次:

[07/8/2013:18:32:27 +0000]“-”0.000 400 0“-”“-”“-”

如何配置 nginx 不记录这些事件？

Answer 1

解决方案是不要使用旧版不受支持的 nginx 版本。从版本 1.3.15(相当旧的版本)开始，nginx 在这种情况下不会记录 400 错误。

查看变更日志以获取信息:http://nginx.org/en/CHANGES

*) Change: opening and closing a connection without sending any data in
   it is no longer logged to access_log with error code 400.