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    Nginx最大連接數如何配置

    本篇內容主要講解“Nginx最大連接數如何配置”,感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷,實用性強。下面就讓小編來帶大家學習“Nginx最大連接數如何配置”吧!

    配置Nginx最大工作進程數##

    worker_processes:最大工作進程數

    Nginx最大連接數如何配置  nginx 第1張

    work_connections:每個工作進程可以允許同時建立的外部連接數量。

    修改最大可打開文件數

    更改操作系統"進程最大可打開文件數"的設置

    首先需要操作系統的root權限,然后需要limits.conf主配置文件:

    [root@localhost?/]#?vim?/etc/security/limits.conf

    在文件中加入下面語句

    *?soft?nofile?65535
    *?hard?nofile?65535

    注意:* 要加到文件里面,以上在limits.conf文件中添加的兩句話的含義是
    soft(應用軟件)級別限制的最大可打開文件數的限制
    hard表示操作系統級別限制的最大可打開文件數的限制,
    *表示所有用戶都生效。

    保存文件后不會馬上生效。需要使用以下命令

    ulimit?-n?65535

    使用ulimit -a 進行查看

    [root@localhost?/]#?ulimit?-a
    core?file?size??????????(blocks,?-c)?0
    data?seg?size???????????(kbytes,?-d)?unlimited
    scheduling?priority?????????????(-e)?0
    file?size???????????????(blocks,?-f)?unlimited
    pending?signals?????????????????(-i)?14989
    max?locked?memory???????(kbytes,?-l)?64
    max?memory?size?????????(kbytes,?-m)?unlimited
    open?files??????????????????????(-n)?65535
    pipe?size????????????(512?bytes,?-p)?8
    POSIX?message?queues?????(bytes,?-q)?819200
    real-time?priority??????????????(-r)?0
    stack?size??????????????(kbytes,?-s)?8192
    cpu?time???????????????(seconds,?-t)?unlimited
    max?user?processes??????????????(-u)?14989
    virtual?memory??????????(kbytes,?-v)?unlimited
    file?locks??????????????????????(-x)?unlimited

    open files 已經變成65535了

    更改Nginx“進程最大可打開文件數”的設置

    打開nginx.conf配合worker_rlimit_nofile屬性。

    #user??nobody;
    worker_processes??4;
    #error_log??logs/error.log;
    #error_log??logs/error.log??notice;
    #error_log??logs/error.log??info;
    #pid????????logs/nginx.pid;
    events?{
    ????use?epoll;
    ????worker_connections??65535;
    }

    驗證Nginx“進程最大可打開文件數”是否起作用

    在linux中所有的進程都會有一個臨時的核心配置文件描述,存放路徑在/proc/進程號/limit

    [root@localhost?sbin]#?ps?-aux|grep?nginx
    root???????1733??0.0??0.0??32816??1792??????????Ss???17:38???0:00?nginx:?master?process?./nginx
    nobody?????1734??0.0??0.7??59952?29184??????????S????17:38???0:00?nginx:?worker?process
    nobody?????1735??0.1??0.7??59952?29184??????????S????17:38???0:00?nginx:?worker?process
    nobody?????1736??0.2??0.7??59952?29184??????????S????17:38???0:00?nginx:?worker?process
    nobody?????1737??0.1??0.7??59952?28928??????????S????17:38???0:00?nginx:?worker?process
    root???????1739??0.0??0.0?112824???980?pts/0????S+???17:38???0:00?grep?--color=auto?nginx
    [root@localhost?sbin]#?cat?/proc/1734/limits
    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????????????8388608??????????????unlimited????????????bytes?????
    Max?core?file?size????????0????????????????????unlimited????????????bytes?????
    Max?resident?set??????????unlimited????????????unlimited????????????bytes?????
    Max?processes?????????????14989????????????????14989????????????????processes?
    Max?open?files????????????65535????????????????65535????????????????files?????
    Max?locked?memory?????????65536????????????????65536????????????????bytes?????
    Max?address?space?????????unlimited????????????unlimited????????????bytes?????
    Max?file?locks????????????unlimited????????????unlimited????????????locks?????
    Max?pending?signals???????14989????????????????14989????????????????signals???
    Max?msgqueue?size?????????819200???????????????819200???????????????bytes?????
    Max?nice?priority?????????0????????????????????0????????????????????
    Max?realtime?priority?????0????????????????????0????????????????????
    Max?realtime?timeout??????unlimited????????????unlimited????????????us

    其中Max open files 的Soft Limit和Hard Limit已經設置成了 65535

    Max client計算方式

    #充當服務器時Nginx可同時承載的連接數量,是最大工作線程*每個線程允許的連接數量
    max_client?=?worker_processes?*?worker_connections
    #充當反向代理服務時,可同時承載的連接數量是最大工作線程*每個線程允許的連接數量/4
    #(4)代表:瀏覽器會建立兩條連接到Nginx,Nginx也會建立兩條連接到后端服務器。這樣就是4條了。
    max_client?=?worker_processes?*?worker_connections/4

    到此,相信大家對“Nginx最大連接數如何配置”有了更深的了解,不妨來實際操作一番吧!這里是蝸牛博客網站,更多相關內容可以進入相關頻道進行查詢,關注我們,繼續學習!

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