编译安装nginx
1.安装依赖包
yum -y install openssl openssl-devel zlibzlib-devel gcc gcc-c++
2.安装pcre
安装nginx所需要的pcre库（为了使nginx支持http rewrite模块）
mkdir -p/home/darren/tools cd /home/darren/tools/ wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.37.tar.gz tar zxf pcre-8.37.tar.gz cd pcre-8.37 ./configure make && makeinstall cd ..
如果安装完以后需要重新安装pcre，则需要 rm -rf/usr/local/share/man/man3/pcre*
3.安装nginx
创建nginx用户
groupaddnginx useradd nginx-s /sbin/nologin -M
cd /home/darren/tools/ wget http://nginx.org/download/nginx-1.8.1.tar.gz wgethttp://nginx.org/download/nginx-1.2.6.tar.gz tarzxf nginx-1.8.1.tar.gz cd nginx-1.8.1 ./configure --user=nginx --group=nginx --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module make && makeinstall
检查nginx安装
/usr/local/nginx/sbin/nginx -v
#提示错误：/usr/local/nginx/sbin/nginx: error while loading shared libraries:libpcre.so.1: cannot open shared object file: No such file ordirectory yum install pcre -y 则不会出现这种错误 find /-name libpcre.so.1 /usr/local/lib/libpcre.so.1 echo '/usr/local/lib/'>>/etc/ld.so.conf ldconfig
检查语法
/usr/local/nginx/sbin/nginx -t
启动nginx服务
/usr/local/nginx/sbin/nginx netstat -lnt
浏览器中输入10.1.1.1测试
附一个一键安装脚本：
#!/bin/sh #for one install nginx #for wangjiadongge #install centos source rpm -Uvh http://mirrors.yun-idc.com/epel/6Server/x86_64/epel-release-6-8.noarch.rpm #install plugin yum install gcc gcc-c++ openssl-devel pcre-devel zlib-devel -y #create user and group groupadd nginx useradd nginx -g nginx -s /sbin/nologin -M #cd /tmp/ [ -d /tmp/download ] || mkdir -p /tmp/download cd /tmp/download/ #wget nginx from www.nginx.org wget http://nginx.org/download/nginx-1.8.1.tar.gz tar zxvf nginx-1.8.1.tar.gz cd nginx-1.8.1 ./configure --prefix=/usr/local/nginx --user=nginx --group=nginx --with-http_stub_status_module --with-http_ssl_module make && make install chown -R nginx.nginx /usr/local/nginx/ echo "/usr/local/nginx/sbin/nginx" >>/etc/rc.local #end
#nginx负载均衡脚本
mv /usr/local/nginx/conf/nginx.conf /usr/local/nginx/conf/nginx.conf.bak
echo "
user nginx;
worker_processes 4;
events {
use epoll;
worker_connections 10240;
}
http {
include mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log logs/access.log main;
sendfile on;
keepalive_timeout 120;
include conf.d/*.conf;
}
" >>/usr/local/nginx/conf/nginx.conf
mkdir /usr/local/nginx/conf/conf.d
echo "
server {
listen 80;
server_name login.xiaodongge.com;
access_log logs/host.access.log main;
location / {
proxy_pass http://loginserver;
}
}
upstream loginserver {
server 10.86.10.21:8300;
server 10.86.10.22:8300;
server 10.86.10.23:8300;
}解释：nginx做负载均衡默认是轮询负载，下面逐一来看：
#默认的负载方式，轮询
upstream myapp1 {
server srv1.example.com;
server srv2.example.com;
server srv3.example.com;
}
server {
listen 80;
location / {
proxy_pass http://myapp1;
}
}#最小连接数，哪台服务器连接的最少就向哪台服务器上负载
upstream myapp1 {
least_conn;
server srv1.example.com;
server srv2.example.com;
server srv3.example.com;
}#ip hash如果一个连接建立，就会始终和这台服务器连接
upstream myapp1 {
ip_hash;
server srv1.example.com;
server srv2.example.com;
server srv3.example.com;
}#权重，自定义设置哪台服务器负载的多
upstream myapp1 {
server srv1.example.com weight=3;
server srv2.example.com;
server srv3.example.com;
}
