通过shell脚本在linux上部署nginx

#!/bin/bash
#设置安装nginx的版本(可以自定义)
nginxlevel=nginx-1.20.1

#判断是否以root用户执行此脚本
if [ $UID -ne 0 ]; 
then
	echo "请使用Root用户执行$0"
	exit
fi

#判断是否接入网络
ping baidu.com -c4 >/dev/null

if [ $? -ne 0 ];
then
	echo "执行$0需要访问到互联网..."
	echo "请检查与互联网的连接后再试..."
	exit	
fi

#判断系统是否安装过nginx
exist=$(whereis nginx | awk '{print $2}')

if [ ! -z "${exist}" ];
then
	echo "您的系统已经部署过nginx了..."
	echo "或您的系统还有nginx残留文件..."
	echo "可以使用 "whereis nginx" 和 "find / -name nginx" 查找清空掉残留文件..."
	exit
fi

#安装依赖环境
yum install -y gcc openssl-devel pcre-devel zlib-devel lsof wget

groupadd -r nginx
useradd -r -g nginx -s /sbin/nologin -M nginx
mkdir -pv /var/tmp/nginx
wget -P /root http://nginx.org/download/"$nginxlevel".tar.gz
tar -zxvf "$nginxlevel".tar.gz
sleep 3
#编译安装
cd /root/"$nginxlevel"
./configure  --user=nginx  --group=nginx  --prefix=/usr/local/nginx  --conf-path=/etc/nginx/nginx.conf  --error-log-path=/var/log/nginx/error.log  --http-log-path=/var/log/nginx/access.log  --pid-path=/var/run/nginx/nginx.pid  --lock-path=/var/lock/nginx.lock  --with-http_stub_status_module  --with-http_ssl_module  --with-http_gzip_static_module  --with-pcre
make && make install

sleep 3

#删除无用文件和路径
rm -rf /root/"$nginxlevel" /root/"$nginxlevel".tar.gz

sleep 3
#设置nginx开机自启动
echo "#nginx开机自启动" >>/etc/rc.d/rc.local
echo "mkdir -p /var/run/nginx && touch /var/run/nginx/nginx.pid" >>/etc/rc.d/rc.local
echo "/usr/local/nginx/sbin/nginx" >>/etc/rc.d/rc.local
#重载配置文件
chmod +x /etc/rc.d/rc.local

#启动nginx
/usr/local/nginx/sbin/nginx

if [ $? -eq 0 ];
then
	echo "===============Nginx安装完毕==============="
	echo "================Nginx已启动================"
else
	echo "===============Nginx安装失败==============="
	echo "=============请检查系统环境配置============="
fi