nginx报错日志
2018/01/21 22:41:10 [crit] 9208#0: accept4() failed (24: Too many open files) 2018/01/21 22:42:16 [crit] 9206#0: accept4() failed (24: Too many open files) 2018/01/21 22:42:16 [alert] 9206#0: *199062671 socket() failed (24: Too many open files) while connecting to upstream
使用下面命令查看打开文件数
#lsof -n|awk '{print $2}'|sort|uniq -c|sort -nr| head 6444 nginx 294 zabbix_ag 268 httpre.py 153 sshd 144 migration 72 watchdog/ 72 kthrotld/ 72 ksoftirqd 72 kintegrit 55 snmpd
需考虑的方面
nginx配置设置增大打开文件数
worker_rlimit_nofile 30000;
系统方面
vi /etc/sysctl.conf 追加或者修改下面的行: fs.file-max = 70000 保存并关闭文件,编辑 /etc/security/limits.conf, 键入: vi /etc/security/limits.conf 像下面这样为所有用户或者nginx用户设置软硬限制: nginx soft nofile 10000 nginx hard nofile 30000 保存并关闭,最后重新载入sysctl命令,以使以上改变生效: sysctl -p
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参考文档:
http://nginx.org/en/docs/ngx_core_module.html#worker_rlimit_nofile
http://www.cnblogs.com/sxlfybb/archive/2011/09/15/2177983.html
http://blog.csdn.net/lastsweetop/article/details/6440136
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