环境：
系统硬件：vmware vsphere (CPU：2*4核，内存2G，双网卡)
系统版本：CentOS-7.0-1406-x86_64-DVD.iso
安装步骤：
1.准备
1.1 显示系统版本
[root@centos ~]# cat /etc/redhat-release
CentOS Linux>[root@centos ~]# uname -a
Linux tCentos7 3.10.0-123.13.1.el7.x86_64 #1 SMP Tue Dec 9 23:06:09 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
1.2 安装基本软件包
[root@centos ~]# yum install vim wget lsof gcc gcc-c++ bzip2 -y
[root@centos ~]# yum install net-tools bind-utils -y
1.3 显示IP地址 (centos7需要先安装 net-tools bind-utils包)
[root@centos ~]# ifconfig|grep inet
inet 192.168.1.10 netmask 255.255.255.0 broadcast 192.168.1.255
2.编译安装nginx
2.1 下载包
[root@centos ~]# cd /usr/local/src/
[root@centos ~]# wget http://nginx.org/download/nginx-1.6.2.tar.gz
[root@centos ~]# wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.36.tar.gz
[root@centos ~]# wget http://zlib.net/zlib-1.2.8.tar.gz
[root@centos ~]# wget http://www.openssl.org/source/openssl-1.0.1j.tar.gz
[root@centos ~]# wget http://www.canonware.com/download/jemalloc/jemalloc-3.6.0.tar.bz2
2.2 安装依赖
[root@centos ~]# yum install zlib-devel openssl-devel -y
2.3 关闭selinux (不关有时会添加不了用户，或者重启后没法开机)
[root@centos ~]# vim /etc/selinux/config
屏蔽以下两行
#SELINUX=enforcing
#SELINUXTYPE=targeted
添加以下一行
SELINUXTYPE=disabled
保存，退出
重启后，查询是否关闭（显示Disabled则表示关闭）
[root@centos ~]# shutdown -r now
[root@centos ~]# getenforce
Disabled
2.4 安装Pcre
[root@centos ~]# cd /usr/local/src/
[root@centos ~]# tar zvxf pcre-8.36.tar.gz
[root@centos ~]# cd pcre-8.36
[root@centos ~]# ./configure
[root@centos ~]# make && make install
2.5 安装openssl
[root@centos ~]# cd /usr/local/src/
[root@centos ~]# tar zvxf openssl-1.0.1j.tar.gz
[root@centos ~]# cd openssl-1.0.1j
[root@centos ~]# ./config
[root@centos ~]# make && make install
2.6 安装zlib
[root@centos ~]# cd /usr/local/src/
[root@centos ~]# tar zvxf zlib-1.2.8.tar.gz
[root@centos ~]# cd zlib-1.2.8
[root@centos ~]# ./configure
[root@centos ~]# make && make install
2.7 安装jemalloc
[root@centos ~]# cd /usr/local/src/
[root@centos ~]# tar xjf jemalloc-3.6.0.tar.bz2
[root@centos ~]# cd jemalloc-3.6.0
[root@centos ~]# ./configure
[root@centos ~]# make && make install
[root@centos ~]# echo '/usr/local/lib' > /etc/ld.so.conf.d/local.conf
[root@centos ~]# ldconfig
2.3 创建www用户和组，创建www虚拟主机使用的目录，以及Nginx使用的日志目录，并且赋予他们适当的权限
[root@centos ~]# groupadd www
[root@centos ~]# useradd -g www www -s /sbin/nologin
[root@centos ~]# mkdir -p /data/www
[root@centos ~]# chmod +w /data/www
[root@centos ~]# chown -R www:www /data/www
***如果没法创建用户，需要检查SELinux状态是否关闭
2.8 安装nginx
[root@centos ~]# cd /usr/local/src/
[root@centos ~]# tar zvxf nginx-1.6.2.tar.gz
[root@centos ~]# cd nginx-1.6.2
[root@centos ~]# ./configure --prefix=/opt/nginx --user=www --group=www --with-http_stub_status_module --with-http_ssl_module --with-http_gzip_static_module --with-openssl=/usr/local/src/openssl-1.0.1j --with-zlib=/usr/local/src/zlib-1.2.8 --with-pcre=/usr/local/src/pcre-8.36 --with-ld-opt="-ljemalloc"
[root@centos ~]# make && make install
2.9 修改 nginx.conf
[root@centos ~]# vim /opt/nginx/conf/nginx.conf
修改前面几行为：
user www www;
worker_processes auto;
error_log logs/error.log crit;
pid logs/nginx.pid;
events{
use epoll;
worker_connections 65535;
}
找到，并修改 root 行的内容
location / {
root /data/www;
index index.html index.htm;
}
保存，退出
2.10 建立测试首页
[root@centos ~]# vim /data/www/index.html
<html>
<head><title>nginx index.html</title></head>
<body>
<h1>index.html</h1>
</body>
</html>
保存，退出
2.11 测试和运行
[root@centos ~]# cd /opt/nginx
[root@centos ~]# ldconfig
[root@centos ~]# ./sbin/nginx -c /opt/nginx/conf/nginx.conf -t
如果显示下面信息，即表示配置没问题
nginx: the configuration file /opt/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /opt/nginx/conf/nginx.conf test is successful
查看jemalloc是否生效，需要先启动nginx
[root@centos ~]# ./sbin/nginx -c /opt/nginx/conf/nginx.conf
[root@centos ~]# lsof -n | grep jemalloc
ginx 2346 root mem REG 253,1 1824470 51571788 /usr/local/lib/libjemalloc.so.1
nginx 2347 www mem REG 253,1 1824470 51571788 /usr/local/lib/libjemalloc.so.1
nginx 2348 www mem REG 253,1 1824470 51571788 /usr/local/lib/libjemalloc.so.1
nginx 2349 www mem REG 253,1 1824470 51571788 /usr/local/lib/libjemalloc.so.1
nginx 2350 www mem REG 253,1 1824470 51571788 /usr/local/lib/libjemalloc.so.1
2.12 防火墙添加80端口
[root@centos ~]# iptables -L|grep ACCEPT
[root@centos ~]# firewall-cmd --zone=public --add-port=80/tcp --permanent
[root@centos ~]# firewall-cmd --reload
[root@centos ~]# iptables -L|grep ACCEPT
2.13 浏览器打开
http://192.168.1.10
显示出欢迎内容，则表示成功
2.14 作为服务，开机后启动
[root@centos ~]# vim /usr/lib/systemd/system/nginx.service
增加以下内容
[Unit]
Description=The nginx HTTP and reverse proxy server
After=syslog.target network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
PIDFile=/opt/nginx/logs/nginx.pid
ExecStartPre=/opt/nginx/sbin/nginx -c /opt/nginx/conf/nginx.conf -t
ExecStart=/opt/nginx/sbin/nginx -c /opt/nginx/conf/nginx.conf
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s QUIT $MAINPID
PrivateTmp=true
[Install]
WantedBy=multi-user.target
:wq 保存退出
[root@centos ~]# systemctl enable nginx.service
[root@centos ~]# systemctl list-unit-files|grep enabled|grep nginx
2.15 启动服务
[root@centos ~]# ./sbin/nginx -s stop
[root@centos ~]# systemctl daemon-reload
[root@centos ~]# systemctl start nginx.service
[root@centos ~]# systemctl status nginx.service -l
[root@centos ~]# ps -ef|grep nginx
[root@centos ~]# lsof -n | grep jemalloc | 
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