nginx 打开的文件太多,似乎无法提高限制

Geu*_*uis 22 nginx ulimit file-descriptors

服务器是 Ubuntu 13.04 (GNU/Linux 3.9.3-x86_64-linode33 x86_64)。

nginx 是 nginx/1.2.6。

我已经为此工作了几个小时,所以这就是我得到的,这就是我所做的。

tail -f /usr/local/nginx/logs/error.log
2013/06/18 21:35:03 [crit] 3427#0: accept4() failed (24: Too many open files)
2013/06/18 21:35:04 [crit] 3427#0: accept4() failed (24: Too many open files)
2013/06/18 21:35:04 [crit] 3427#0: accept4() failed (24: Too many open files)
2013/06/18 21:35:04 [crit] 3427#0: accept4() failed (24: Too many open files)
2013/06/18 21:35:04 [crit] 3427#0: accept4() failed (24: Too many open files)
2013/06/18 21:35:04 [crit] 3427#0: accept4() failed (24: Too many open files)
2013/06/18 21:35:04 [crit] 3427#0: accept4() failed (24: Too many open files)
2013/06/18 21:35:04 [crit] 3427#0: accept4() failed (24: Too many open files)
2013/06/18 21:35:04 [crit] 3427#0: accept4() failed (24: Too many open files)
2013/06/18 21:35:04 [crit] 3427#0: accept4() failed (24: Too many open files)
2013/06/18 21:35:04 [crit] 3427#0: accept4() failed (24: Too many open files)
2013/06/18 21:35:04 [crit] 3427#0: accept4() failed (24: Too many open files)
2013/06/18 21:35:05 [crit] 3426#0: accept4() failed (24: Too many open files)
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Nginx 运行:

geuis@localhost:~$ ps aux | grep nginx
root      3422  0.0  0.0  39292   380 ?        Ss   21:30   0:00 nginx: master process /usr/local/nginx/sbin/nginx
nobody    3423  3.7 18.8 238128 190848 ?       S    21:30   0:13 nginx: worker process      
nobody    3424  3.8 19.0 236972 192336 ?       S    21:30   0:13 nginx: worker process      
nobody    3426  3.6 19.0 235492 192192 ?       S    21:30   0:13 nginx: worker process      
nobody    3427  3.7 19.0 236228 192432 ?       S    21:30   0:13 nginx: worker process      
nobody    3428  0.0  0.0  39444   468 ?        S    21:30   0:00 nginx: cache manager process
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修改 /etc/security/limits.conf 中的软/硬限制(文件末尾的设置)

root soft  nofile 65536
root hard  nofile 65536

www-data soft nofile 65536
www-data hard nofile 65536

nobody soft nofile 65536
nobody hard nofile 65536
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读取最大文件

cat /proc/sys/fs/file-max
500000
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在 /etc/pam.d/common-session 中:

session required pam_limits.so
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添加此内容并重新启动服务器以进行良好的测量,对于 nginx,我通过获取父进程的 PID 来计算软/硬限制,并且:

cat /proc/<PID>/limits
Limit                     Soft Limit           Hard Limit           Units     
Max open files            1024                 4096                 files     
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父进程以“root”身份运行,4 个工作人员以“nobody”身份运行。

root      2765  0.0  0.0  39292   388 ?        Ss   00:03   0:00 nginx: master process /usr/local/nginx/sbin/nginx
nobody    2766  3.3 17.8 235336 180564 ?       S    00:03   0:21 nginx: worker process      
nobody    2767  3.3 17.9 235432 181776 ?       S    00:03   0:21 nginx: worker process      
nobody    2769  3.4 17.9 236096 181524 ?       S    00:03   0:21 nginx: worker process      
nobody    2770  3.3 18.3 235288 185456 ?       S    00:03   0:21 nginx: worker process      
nobody    2771  0.0  0.0  39444   684 ?        S    00:03   0:00 nginx: cache manager process
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我已经尝试了所有我知道的方法并且能够从 Google 获得。我无法增加 nginx 的文件限制。

帮助?

Nat*_*n C 32

将以下行添加到您的 nginx 并重新启动该过程:

worker_rlimit_nofile 30000;

这将允许工作人员处理更多文件。然后您可以验证:

su - nobody
ulimit -Hn
ulimit -Sn

这应该输出新的硬/软限制。

参考

  • 如果您只更改 `worker_rlimit_nofile` uWSGI 设置而不是系统限制(这对我有用),则无法通过 `ulimit` 进行验证。相反,您应该直接查看 `/proc/&lt;pid of worker&gt;/limits`。 (7认同)

Mik*_*ike 1

确保在编辑这些文件后运行以下命令

sysctl -p
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然后重启nginx