centos7.3安装nginx默认IP地址无法访问

centos7查看防火墙状态

firewall-cmd --state

centos7关闭防火墙

systemctl stop firewalld.service

centos开启防火墙

systemctl start firewalld.service

centos禁止防火墙开机启动

systemctl disable firewalld.service

yum install wget #安装下载工具

wget http://www.atomicorp.com/installers/atomic #下载

sh ./atomic #安装

yum check-update #更新yum源 有的需要更新几次 才有nginx最新版本 否则是老版本nginx

yum remove httpd* php* #删除系统自带的软件包 也可加mysql*前提备份数据库

yum install nginx #安装nginx根据提示输入y进行安装

chkconfig nginx on #设置nginx开机启动

service nginx start #启动nginx 重启 restart

编译安装（久伴是采取的编译安装）

wget http://nginx.org/download/nginx-1.7.8.tar.gz

tar -zxvf nginx-1.7.8.tar.gz

cd nginx-1.7.8

./configure

make && make install

安装nginx需要的包

yum install -y zlib-devel

yum -y install pcre-devel

yum -y install gcc

yum -y install gcc-c++

yum install make

添加80端口

firewall-cmd --zone=public --add-port=80/tcp --permanent

命令含义：

--zone #作用域

--add-port=80/tcp #添加端口，格式为：端口/通讯协议

--permanent #永久生效，没有此参数重启后失效

网络工具

yum install net-tools

使用./nginx -s reload重启nginx报错

nginx: [error] invalid PID number "" in "/usr/local/nginx/logs/nginx.pid"

解决方案

[root@localhost nginx]# cd logs

[root@localhost logs]# ls

access.log error.log nginx-access.log nginx_error.log

果然没有/usr/local/nginx/logs/nginx.pid 文件

解决方法：

[root@localhost nginx]/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf

启动nginx出现Failed to start nginx.service:unit not found

在/root/etc/init.d/目录下新建文件，文件名为nginx

或者用命令在根目录下执行:# vim /etc/init.d/nginx (注意vim旁边有一个空格)

插入以下代码

#!/bin/sh

# nginx - this script starts and stops the nginx daemin
#
# chkconfig:   - 85 15

# description:  Nginx is an HTTP(S) server, HTTP(S) reverse \
#               proxy and IMAP/POP3 proxy server

# processname: nginx
# config:      /usr/local/nginx/conf/nginx.conf
# pidfile:     /usr/local/nginx/logs/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"

lockfile=/var/lock/subsys/nginx

start() {

    [ -x $nginx ] || exit 5

    [ -f $NGINX_CONF_FILE ] || exit 6

    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

    start

}


reload() {

    configtest || return $?

    echo -n $"Reloading $prog: "

    killproc $nginx -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

切记保存代码后使用以下代码给予权限

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

a+x 是给所有人加上可执行权限，包括所有者，所属组，和其他人

o+x 只是给其他人加上可执行权限

切换到usr/local/nginx/sbin 执行./nginx -s relocal重启nginx 如果报错请在nginx目录执行以下代码在重启NGINX服务即可

/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf

最后刷新外网IP结果如下