nginx集群问题

blueswxs

fail_timeout = TIME - the time during which must occur *max_fails* number of unsuccessful attempts at communication with the server that would cause the server to be considered inoperative, and also the time for which the server will be considered inoperative (before another attempt is made). If not set the time is 10 seconds. fail_timeout has nothing to do with upstream response time, use proxy_connect_timeout and proxy_read_timeout for controlling this.

完整文档
http://wiki.nginx.org/NginxHttpUpstreamModule

我估计你的需求就是缩减检测时间。