這篇文章給大家分享的是有關(guān)CentOS6.5環(huán)境如何安裝nginx服務(wù)器及配置負(fù)載均衡的內(nèi)容。小編覺得挺實(shí)用的,因此分享給大家做個(gè)參考,一起跟隨小編過來看看吧。
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本文實(shí)例講述了CentOS6.5環(huán)境安裝nginx服務(wù)器及負(fù)載均衡配置操作。分享給大家供大家參考,具體如下:
1、下載PCRE, 是一個(gè)用C語(yǔ)言編寫的正則表達(dá)式函數(shù)庫(kù)
[root@localhost pcre-8.36]# cd /tmp/download/ [root@localhost download]# wget http://nchc.dl.sourceforge.net/project/pcre/pcre/8.37/pcre-8.37.tar.gz [root@localhost download]# tar zxvf pcre-8.36.tar.gz
2、下載zlib庫(kù)
[root@localhost pcre-8.36]# cd /tmp/download/ [root@localhost download]# wget http://ncu.dl.sourceforge.net/project/libpng/zlib/1.2.8/zlib-1.2.8.tar.gz [root@localhost download]# tar -zxvf zlib-1.2.8.tar.gz cd zlib-1.2.8
4、下載SSL
[root@localhost zlib-1.2.8]# cd .. [root@localhost download]# wget http://www.openssl.org/source/openssl-1.0.1p.tar.gz [root@localhost download]# cd openssl-1.0.1c [root@localhost openssl-1.0.1c]# tar -zxvf openssl-1.0.1c.tar.gz
5、下載nginx
[root@localhost download]# wget http://nginx.org/download/nginx-1.2.8.tar.gz [root@localhost download]# tar -zxvf nginx-1.2.8.tar.gz
6、安裝
[root@localhost download]mv pcre-8.36 /usr/local/ [root@localhost download]mv zlib-1.2.8 /usr/local/ [root@localhost download]mv openssl-1.0.1c /usr/local/ [root@localhost download]mv nginx-1.2.8 /usr/local/ [root@localhost download]cd /usr/local/ [root@localhost local]# cd pcre-8.36 [root@localhost pcre-8.36]# ./configure&&make&&make install [root@localhost pcre-8.36] cd ../zlib-1.2.8 [root@localhost zlib-1.2.8]# ./configure && make && make install [root@localhost zlib-1.2.8]# cd ../openssl-1.0.1c [root@localhost openssl-1.0.1c]# ./config && make && make install [root@localhost openssl-1.0.1c]# cd ../nginx-1.2.8 [root@localhost nginx-1.2.8]# ./configure --prefix=/usr/local/nginx && make && make install
7、啟動(dòng)nginx
[root@localhost nginx]# /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
8、測(cè)試
在確保可以連接到服務(wù)器的電腦上,瀏覽器輸入裝了nginx的機(jī)器的ip地址,會(huì)看到Welcome to nginx!的提示說明安裝配配置成功了。

9、設(shè)置開機(jī)自動(dòng)啟動(dòng)(shell腳本處理)
[root@localhost logs]# vi /etc/init.d/nginx
添加以下shell腳本。
#!/bin/bash
# nginx Startup script for the Nginx HTTP Server
# it is v.0.0.2 version.
# chkconfig: - 85 15
# description: Nginx is a high-performance web and proxy server.
# It has a lot of features, but it's not for everyone.
# processname: nginx
# pidfile: /var/run/nginx.pid
# config: /usr/local/nginx/conf/nginx.conf
nginxd=/usr/local/nginx/sbin/nginx
nginx_config=/usr/local/nginx/conf/nginx.conf
nginx_pid=/var/run/nginx.pid
RETVAL=0
prog="nginx"
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0
[ -x $nginxd ] || exit 0
# Start nginx daemons functions.
start() {
if [ -e $nginx_pid ];then
echo "nginx already running...."
exit 1
fi
echo -n $"Starting $prog: "
daemon $nginxd -c ${nginx_config}
RETVAL=$?
echo
[ $RETVAL = 0 ] && touch /var/lock/subsys/nginx
return $RETVAL
}
# Stop nginx daemons functions.
stop() {
echo -n $"Stopping $prog: "
killproc $nginxd
RETVAL=$?
echo
[ $RETVAL = 0 ] && rm -f /var/lock/subsys/nginx /var/run/nginx.pid
}
# reload nginx service functions.
reload() {
echo -n $"Reloading $prog: "
#kill -HUP `cat ${nginx_pid}`
killproc $nginxd -HUP
RETVAL=$?
echo
}
# See how we were called.
case "$1" in
start)
start
;;
stop)
stop
;;
reload)
reload
;;
restart)
stop
start
;;
status)
status $prog
RETVAL=$?
;;
*)
echo $"Usage: $prog {start|stop|restart|reload|status|help}"
exit 1
esac
exit $RETVAL保存后,設(shè)置權(quán)限讓所有人可以操作。
[root@localhost ~]# chmod a+x /etc/init.d/nginx [root@localhost logs]# /etc/init.d/nginx status nginx (pid 2417 2416) is running... [root@localhost logs]# /etc/init.d/nginx stop Stopping nginx: [ OK ] [root@localhost logs]# /etc/init.d/nginx start Starting nginx: [ OK ] [root@localhost logs]# /etc/init.d/nginx status nginx (pid 2454 2452) is running... [root@localhost ~]# vi /etc/rc.local
添加:
/etc/init.d/nginx start
重啟電腦就會(huì)生效。
注意:腳本里面關(guān)于啟動(dòng)目錄的,如果你的安裝地址不一樣,要進(jìn)行修改。
負(fù)載均衡配置:
現(xiàn)有兩部服務(wù)器:
192.168.137.197 (按照以上操作安裝有nginx,作為轉(zhuǎn)發(fā)機(jī),虛擬機(jī))
192.168.137.33 (無安裝nginx,運(yùn)行有測(cè)試用的web工程,虛擬機(jī))
10.10.33.59 (無安裝nginx,運(yùn)行有測(cè)試用的web工程,本地電腦地址)
,運(yùn)行有測(cè)試用的web工程
127.0.0.1 web_app
[root@a conf]# vi /usr/local/nginx/conf/nginx.conf
配置如下展示:
worker_processes 8;
pid /usr/local/nginx/nginx.pid;
worker_rlimit_nofile 102400;
events
{
use epoll;
worker_connections 102400;
}
http
{
include mime.types;
default_type application/octet-stream;
fastcgi_intercept_errors on;
charset utf-8;
server_names_hash_bucket_size 128;
client_header_buffer_size 4k;
large_client_header_buffers 4 32k;
client_max_body_size 300m;
sendfile on;
tcp_nopush on;
keepalive_timeout 60;
tcp_nodelay on;
client_body_buffer_size 512k;
proxy_connect_timeout 5;
proxy_read_timeout 60;
proxy_send_timeout 5;
proxy_buffer_size 16k;
proxy_buffers 4 64k;
proxy_busy_buffers_size 128k;
proxy_temp_file_write_size 128k;
gzip on;
gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.1;
gzip_comp_level 2;
gzip_types text/plain application/x-javascript text/css application/xml;
gzip_vary on;
###2012-12-19 change nginx logs
log_format main '$http_x_forwarded_for - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" $request_time $remote_addr';
upstream web_app {
server 192.168.137.197:8080 weight=1 max_fails=2 fail_timeout=30s;
server 192.168.137.33:8080 weight=1 max_fails=2 fail_timeout=30s;
server 10.10.33.59:8080 weight=1 max_fails=2 fail_timeout=30s;
}
####chinaapp.sinaapp.com
server {
listen 80;
server_name chinaapp.sinaapp.com;
index index.jsp index.html index.htm;
#發(fā)布目錄/data/www
root /data/www;
location /
{
proxy_next_upstream http_502 http_504 error timeout invalid_header;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://web_app;
expires 3d;
}
}
}設(shè)置host:
[root@a conf]# vi /etc/hosts
添加hosts:
127.0.0.1 web_app
啟動(dòng)nginx
[root@localhost nginx]# /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
啟動(dòng)三部服務(wù)器的web應(yīng)用:
在192.168.137.197執(zhí)行指令:
[root@a PROGRAM]# curl "http://web_app/index.jsp"
測(cè)試結(jié)果如下:

常見問題及解決辦法:
1、安裝PCRE時(shí)提示configure: error: You need a C++ compiler for C++ support.
原因是沒有安裝c++編譯器,采用下面的命令安裝:
[root@localhost pcre-8.37]# yum install -y gcc gcc-c++
2、啟動(dòng)nginx失敗
[root@localhost nginx]# /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf /usr/local/nginx/sbin/nginx: error while loading shared libraries: libpcre.so.1: cannot open shared object file: No such file or directory
原因是64bit的系統(tǒng),但是默認(rèn)取了/usr/local/lib里面的包
檢查方法:
[root@localhost nginx]# cd /usr/local/ [root@localhost local]# ls /lib64/ |grep pcre libpcre.so.0 libpcre.so.0.0.1 [root@localhost local]# ls /lib/ |grep pcre
說明缺失的包在lib64
設(shè)置軟連接來解決:
[root@localhost local]# ln -s /lib64/libpcre.so.0.0.1 /lib64/libpcre.so.1 [root@localhost local]# cd nginx [root@localhost nginx]# /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
3、啟動(dòng)報(bào)錯(cuò):
報(bào)錯(cuò):nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
解決辦法:sudo fuser -k 80/tcp
端口被占用,關(guān)閉占用端口
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