前言:
由于服務(wù)器apache抗不住目前的并發(fā).加上前端squid配置后,問題依然無法解決.而頁面程序大部分是動(dòng)態(tài).無法使用fastcgi來處理.因此想使用nginx做為反向代理apache.整個(gè)配置安裝過程很簡(jiǎn)單.在考慮高并發(fā)的情況下,在安裝前就做了些優(yōu)化.目前配置能抗住3000以上并發(fā).好像不是特別大哦?呵~~ 但足以~~ 只是還有少量499問題..期待有人跟我討論解決
第1部分:安裝
1 建立用戶及組
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/usr/sbin/groupadd www/usr/sbin/useradd -g www www |
2 安裝pcre 讓nginx支持rewrite 方便以后所需
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wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-7.8.tar.gztar zxvf pcre-7.8.tar.gzcd pcre-7.8/./configuremake && make install |
3 安裝nginx
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wget http://sysoev.ru/nginx/nginx-0.7.58.tar.gztar zxvf nginx-0.7.58.tar.gzcd nginx-0.7.58/./configure --user=www --group=www --prefix=/usr/local/webserver/nginx --with-http_stub_status_module --with-http_ssl_module --with-cc-opt='-O2' --with-cpu-opt=opteronmake && make install |
#注意上文中的--with-cc-opt='-O2' --with-cpu-opt=opteron 這是編譯器優(yōu)化,目前最常用的是-02 而不是3.后面對(duì)應(yīng)CPU的型號(hào),可參照:http://wiki.gentoo.tw/index.php/HOWTO_CFLAG
第2部分:配置及優(yōu)化配置文件
1 nginx.conf 配置文件:
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user www www;worker_processes 4;# [ debug | info | notice | warn | error | crit ]error_log /usr/local/webserver/nginx/logs/nginx_error.log crit;pid /usr/local/webserver/nginx/nginx.pid;#Specifies the value for maximum file descriptors that can be opened by this process.worker_rlimit_nofile 51200;events{ use epoll; worker_connections 51200;}http{ include mime.types; default_type application/octet-stream; source_charset GB2312; server_names_hash_bucket_size 256; client_header_buffer_size 256k; large_client_header_buffers 4 256k; #size limits client_max_body_size 50m; client_body_buffer_size 256k; client_header_timeout 3m; client_body_timeout 3m; send_timeout 3m;#參數(shù)都有所調(diào)整.目的是解決代理過程中出現(xiàn)的一些502 499錯(cuò)誤 sendfile on; tcp_nopush on; keepalive_timeout 120; #參數(shù)加大,以解決做代理時(shí)502錯(cuò)誤 tcp_nodelay on; include vhosts/upstream.conf; include vhosts/bbs.linuxtone.conf; } |
2 upstream.conf 配置文件(這也是做負(fù)載的配置方法)
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upstream.conf upstream bbs.linuxtone.com { server 192.168.1.4:8099; } |
3 站點(diǎn)配置文件
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bbs.linuxtone.confserver { listen 80; server_name bbs.linuxtone.conf; charset GB2312; index index.html index.htm; root /date/wwwroot/linuxtone/; location ~ ^/NginxStatus/ { stub_status on; access_log off; } location / { root /date/wwwroot/linuxtone/; proxy_redirect off ; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header REMOTE-HOST $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; client_max_body_size 50m; client_body_buffer_size 256k; proxy_connect_timeout 30; proxy_send_timeout 30; proxy_read_timeout 60; proxy_buffer_size 256k; proxy_buffers 4 256k; proxy_busy_buffers_size 256k; proxy_temp_file_write_size 256k; proxy_next_upstream error timeout invalid_header http_500 http_503 http_404; proxy_max_temp_file_size 128m; proxy_pass http://bbs.linuxtone.com; } |
#參數(shù)都有所調(diào)整.目的是解決代理過程中出現(xiàn)的一些502 499錯(cuò)誤
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#Add expires header for static content location ~* \.(jpg|jpeg|gif|png|swf)$ { if (-f $request_filename) { root /date/wwwroot/linuxtone/; expires 1d; break; } } log_format access '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" $http_x_forwarded_for'; access_log /exp/nginxlogs/bbs.linuxtone_access.log access; } |
注:第二種代理方式
nginx 處理下圖片,html等靜態(tài)的東西.其它動(dòng)態(tài)由apache處理.因此apache也需要做一些參數(shù)調(diào)整.
設(shè)置圖片等過期時(shí)間.緩解請(qǐng)求.
如果源與nginx在同一臺(tái)機(jī)器建議使用如下方法:
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location / { proxy_pass http://192.168.1.4:8099/; proxy_redirect default ; } |
針對(duì)不同的目錄進(jìn)行代理把下面的配置放到根目錄代理的上面
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location /linuxtone/ { proxy_pass http://192.168.1.4:8099/linuxtone/; proxy_redirect default ; } |
4 源配置
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<VirtualHost 192.168.1.4:8099> ServerAdmin liuyu105#gmail.com DocumentRoot /date/wwwroot/linuxtone ServerName bbs.linuxtone.com ErrorLog logs/linuxtone_error_log CustomLog "|/usr/local/sbin/cronolog logs/linuxtone_access_log.%Y%m%d" combined</VirtualHost> |
第3部分:源的優(yōu)化
1 apache-mpm.conf
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<IfModule mpm_prefork_module> StartServers 15 MinSpareServers 15 MaxSpareServers 30 ServerLimit 2536 MaxClients 2048 MaxRequestsPerChild 1500</IfModule> |
2 apache-keepalive
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Timeout 120 #與nginx的保持一至KeepAlive OnMaxKeepAliveRequests 400KeepAliveTimeout 7 |
第4部分:PHP的優(yōu)化
優(yōu)化一:將PHP由之前的xcache換成eaccelerator
1 安裝
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wget http://bart.eaccelerator.net/source/0.9.5.3/eaccelerator-0.9.5.3.tar.bz2tar jxvf eaccelerator-0.9.5.3.tar.bz2cd eaccelerator-0.9.5.3//usr/local/webserver/php/bin/phpize./configure --enable-eaccelerator=shared --with-php-config=/usr/local/php5/bin/php-configmakemake install |
注:PHP路徑以安裝為準(zhǔn)!
2 配置
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sed -i 's#extension_dir = "./"#extension_dir = "/usr/local/php5/lib/php/extensions/no-debug-non-zts-20060613/"\nextension = "memcache.so"\n#' /etc/php.inised -i 's#output_buffering = Off#output_buffering = On#' /etc/php.inised -i "s#; always_populate_raw_post_data = On#always_populate_raw_post_data = On#g" /etc/php.ini |
配置eAccelerator加速PHP：
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mkdir -p /usr/local/webserver/eaccelerator_cachevi /etc/php.ini |
按shift+g鍵跳到配置文件的最末尾，加上以下配置信息：
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[eaccelerator]zend_extension="/usr/local/php5/lib/php/extensions/no-debug-non-zts-20060613/eaccelerator.so"eaccelerator.shm_size="128"eaccelerator.cache_dir="/usr/local/webserver/eaccelerator_cache"eaccelerator.enable="1"eaccelerator.optimizer="1"eaccelerator.check_mtime="1"eaccelerator.debug="0"eaccelerator.filter=""eaccelerator.shm_max="0"eaccelerator.shm_ttl="300"eaccelerator.shm_prune_period="120"eaccelerator.shm_only="0"eaccelerator.compress="1"eaccelerator.compress_level="9" |
優(yōu)化二:聯(lián)系開發(fā)重新編譯php減少php的模塊.以減少php進(jìn)程所占用內(nèi)存數(shù).這塊盡管影響不大,但也有一定的作用.編譯前也可以參照nginx的編譯器優(yōu)化方式安裝.
第5部分:測(cè)試并啟動(dòng)nginx
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ulimit -SHn 51200/usr/local/webserver/nginx/sbin/nginx -t /usr/local/webserver/nginx/sbin/nginx |
第6部分:nginx日志切割腳本
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#!/bin/bash# This script run at 00:00# The Nginx logs pathlogs_path="/exp/nginxlogs/"mkdir -p ${logs_path}$(date -d "yesterday" +"%Y")/$(date -d "yesterday" +"%m")/mv ${logs_path}bbs.linuxtone_access.log ${logs_path}$(date -d "yesterday" +"%Y")/$(date -d "yesterday" +"%m")/bbs.linuxtone_access_$(date -d "yesterday" +"%Y%m%d").logkill -USR1 `cat /usr/local/webserver/nginx/nginx.pid` |
crontab -e
00 00 * * * /bin/bash /usr/local/webserver/nginx/sbin/cut_nginx_log.sh
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持服務(wù)器之家。
原文鏈接：http://liuyu.blog.51cto.com/183345/166381/
