nginx 上传文件报错

Question

2012/11/20 13:05:10 [crit] 16779#0: accept4() failed (24: Too many open files)
2012/11/20 13:05:10 [crit] 16779#0: accept4() failed (24: Too many open files)
2012/11/20 13:05:11 [crit] 16779#0: accept4() failed (24: Too many open files)
2012/11/20 13:05:11 [crit] 16779#0: accept4() failed (24: Too many open files)
2012/11/20 13:05:12 [crit] 16779#0: accept4() failed (24: Too many open files)
2012/11/20 13:05:12 [crit] 16779#0: accept4() failed (24: Too many open files)
2012/11/20 13:05:13 [crit] 16779#0: accept4() failed (24: Too many open files)
2012/11/20 13:05:13 [crit] 16779#0: accept4() failed (24: Too many open files)
2012/11/20 13:05:14 [crit] 16779#0: accept4() failed (24: Too many open files)
2012/11/20 13:05:14 [crit] 16779#0: accept4() failed (24: Too many open files)
2012/11/20 13:05:15 [crit] 16779#0: accept4() failed (24: Too many open files)

Answer 1

看起来是受到了系统对进程能够打开的最大文件数量限制，accept4系统调用无法获取新的文件描述符。可以使用ulimit -n来修改这个限制。

ulimit命令的修改在重启后会失效。对于不同的linux发行版，这个初始值是放在不同的配置文件中的，详情参考Google。