在Centos中安装Nginx有两种方法，一种通过yum安装，一种源码编译安装，这里介绍编译安装的过程。如果需要yum安装可以参考官方的介绍：http://nginx.org/en/linux_packages.html#RHEL-CentOS 。

先安装gcc、openssl 库。

yum -y install gcc gcc-c++ wget openssl openssl-devel

安装PCRE库

rewrite模块需要 pcre 库：

wget https://ftp.pcre.org/pub/pcre/pcre-8.44.tar.gz
tar zxvf pcre-8.44.tar.gz
cd pcre-8.44
./configure
make && make install

创建www用户，让nginx以www用户运行，如果已经创建则可跳过

groupadd www
useradd -s /sbin/nologin -g www www

安装Nginx

这里安装最新的稳定版Nginx 1.16：

wget http://nginx.org/download/nginx-1.16.1.tar.gz

tar zxvf nginx-1.16.1.tar.gz

cd nginx-1.16.1

./configure --user=www --group=www --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module --with-http_v2_module --with-http_gzip_static_module --with-http_sub_module --with-stream --with-stream_ssl_module

make && make install

配置

以www用户运行，在 /usr/local/nginx/conf/nginx.conf 中加入：

user www www;

加入服务，并开机启动， 创建/etc/init.d/nginx文件，并加入以下配置：

#!/bin/sh
#
# nginx - this script starts and stops the nginx daemon
#
# chkconfig:   - 85 15
# description:  NGINX is an HTTP(S) server, HTTP(S) reverse \
#               proxy and IMAP/POP3 proxy server
# processname: nginx
# config:      /etc/nginx/nginx.conf
# config:      /etc/sysconfig/nginx
# pidfile:     /var/run/nginx.pid

# Source function library.
. /etc/rc.d/init.d/functions

# Source networking configuration.
. /etc/sysconfig/network

# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0

nginx="/usr/local/nginx/sbin/nginx"
prog=$(basename $nginx)

NGINX_CONF_FILE="/usr/local/nginx/conf/nginx.conf"

[ -f /etc/sysconfig/nginx ] && . /etc/sysconfig/nginx

lockfile=/var/lock/subsys/nginx

make_dirs() {
   # make required directories
   user=`$nginx -V 2>&1 | grep "configure arguments:.*--user=" | sed 's/[^*]*--user=\([^ ]*\).*/\1/g' -`
   if [ -n "$user" ]; then
      if [ -z "`grep $user /etc/passwd`" ]; then
         useradd -M -s /bin/nologin $user
      fi
      options=`$nginx -V 2>&1 | grep 'configure arguments:'`
      for opt in $options; do
          if [ `echo $opt | grep '.*-temp-path'` ]; then
              value=`echo $opt | cut -d "=" -f 2`
              if [ ! -d "$value" ]; then
                  # echo "creating" $value
                  mkdir -p $value && chown -R $user $value
              fi
          fi
       done
    fi
}

start() {
    [ -x $nginx ] || exit 5
    [ -f $NGINX_CONF_FILE ] || exit 6
    make_dirs
    echo -n $"Starting $prog: "
    daemon $nginx -c $NGINX_CONF_FILE
    retval=$?
    echo
    [ $retval -eq 0 ] && touch $lockfile
    return $retval
}

stop() {
    echo -n $"Stopping $prog: "
    killproc $prog -QUIT
    retval=$?
    echo
    [ $retval -eq 0 ] && rm -f $lockfile
    return $retval
}

restart() {
    configtest || return $?
    stop
    sleep 1
    start
}

reload() {
    configtest || return $?
    echo -n $"Reloading $prog: "
    killproc $prog -HUP
    retval=$?
    echo
}

force_reload() {
    restart
}

configtest() {
  $nginx -t -c $NGINX_CONF_FILE
}

rh_status() {
    status $prog
}

rh_status_q() {
    rh_status >/dev/null 2>&1
}

case "$1" in
    start)
        rh_status_q && exit 0
        $1
        ;;
    stop)
        rh_status_q || exit 0
        $1
        ;;
    restart|configtest)
        $1
        ;;
    reload)
        rh_status_q || exit 7
        $1
        ;;
    force-reload)
        force_reload
        ;;
    status)
        rh_status
        ;;
    condrestart|try-restart)
        rh_status_q || exit 0
            ;;
    *)
        echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}"
        exit 2
esac

以上配置参考的nginx官网：https://www.nginx.com/resources/wiki/start/topics/examples/redhatnginxinit/

增加可执行权限：

chmod a+x /etc/init.d/nginx

加进服务列表，并开启开机启动：

chkconfig --add nginx 
chkconfig nginx on

启动nginx:

service nginx start