nginx错误Too many open files

在线上都运行一年的nginx报出这个问题 愁死了，因为授权的原因不能重启，幸好可以设置

日志报错如下

2020/03/22 14:31:33 [crit] 19793#0: *2301 open() "/home/data/logs/access.log" failed (24: Too many open files), client: 101.227.140.37
2020/03/22 14:31:33 [crit] 19793#0: *2304 open() "/home/data/logs/access.log" failed (24: Too many open files), client: 101.227.140.44
2020/03/22 14:31:33 [crit] 19793#0: *2307 open() "/home/data/logs/access.log" failed (24: Too many open files), client: 101.227.140.43
2020/03/22 14:31:33 [crit] 19793#0: accept4() failed (24: Too many open files)
2020/03/22 14:31:33 [crit] 19793#0: accept4() failed (24: Too many open files)
2020/03/22 14:31:34 [crit] 19793#0: accept4() failed (24: Too many open files)

先查一下限制cat /proc/3383/limits注意这个进程ID是nginx的其中一个哈

Limit                     Soft Limit           Hard Limit           Units     
Max cpu time              unlimited            unlimited            seconds   
Max file size             unlimited            unlimited            bytes     
Max data size             unlimited            unlimited            bytes     
Max stack size            10485760             unlimited            bytes     
Max core file size        0                    unlimited            bytes     
Max resident set          unlimited            unlimited            bytes     
Max processes             95709                95709                processes 
Max open files            1024                 4096                 files     
Max locked memory         65536                65536                bytes     
Max address space         unlimited            unlimited            bytes     
Max file locks            unlimited            unlimited            locks     
Max pending signals       95709                95709                signals   
Max msgqueue size         819200               819200               bytes     
Max nice priority         0                    0                    
Max realtime priority     0                    0                    
Max realtime timeout      unlimited            unlimited            us

很明显Max open files的Soft limit太小了 需要设置成4096

echo -n 'Max open files=4096:4096' > /proc/3383/limits

如法炮制nginx的所有进程 就能正常播放了