部署LNMP报错怎么办？别担心，教你想报错都难的LNMP脚本

Posted 2021-10-27 Friends of the wind

目录结构图

创建项目目录
提示：将需要的不同类型的文件归到不同分类，需要哪个调用那个，一旦报错，只需到对应的部分脚本去找，后期，需要扩展或更改也方便。

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创建脚本

思路：所有的变量都在主脚本lnmp.sh定义，将各个部分的脚本定义成函数，载入主脚本，调用即可；
所需文件放在/lnmp目录下相应位置，一定不能乱，本地主机也要先配置好yum仓库，手工在/root/hosts下创建远程主机列表。

1、 创建免密交互、初始化系统脚本
vim /lnmp/include/secret_free.sh

#!/usr/bin/env bash
#ssh secret free

secret_free() {
echo " = = = = = = = = = = = = = = = = 免密交互 = = = = = = = = = = = = = = = = "
yum -y install expect  

if [ ! -f /root/.ssh/id_rsa ];then   
	ssh-keygen -t rsa -P "" -f ~/.ssh/id_rsa  
	mv /root/.ssh/id_rsa.pub /root/.ssh/authorized_keys  
	 echo "id_rsa创建成功"
else
	mv /root/.ssh/id_rsa.pub /root/.ssh/authorized_keys
 	echo "id_rsa已存在"
fi

while read line
 do
   user=`echo $line | cut -d " " -f 2`    
   ip=`echo $line | cut -d " " -f 1`
   passwd=`echo $line | cut -d " " -f 3`
expect  <<EOF
        set     timeout 10
        spawn   scp     -r /root/.ssh $ip:/root
        expect  {
        "yes/no" { send "yes\\n";exp_continue }
        "password" { send "$passwd\\n" }
        }
        expect eof

EOF
        done < /root/hosts   
}

vim /lnmp/include/init_os.sh

#!/usr/bin/env bash
#init os

init_os() {
#YUM
	cd  /lnmp/src
	scp -rp /lnmp/src  root@${nip1}:/root
	cd /lnmp/conf
        scp -rp /lnmp/conf  root@${nip1}:/root
	ssh $nip1 << E
if	[ -d /etc/yum.repos.d/bak/ ] || mkdir /etc/yum.repos.d/bak/
then
	cd  /etc/yum.repos.d/
	mv /etc/yum.repos.d/*.repo  /etc/yum.repos.d/bak
fi
	rm -f /var/run/yum.pid
	cd /root/conf/
	mv /root/conf/yum.repo /etc/yum.repos.d/

#SELinux
	systemctl stop firewalld
	setenforce 0
E
}

2、 创建安装nginx脚本
vim /lnmp/include/nginx.sh

#!/usr/bin/env bash
#install nginx

nginx() {
echo " = = = = = = = = = = = = = = = = 安装nginx = = = = = = = = = = = = = = = = "
while read line
do	
	ssh $nip1 << E
	rm -f /var/run/yum.pid
	cd /root/src/nginx-rpm/
	yum -y localinstall *.rpm
E
done < /root/hosts
	cd /root/conf/
	mv /root/conf/nginx.conf  /etc/nginx/conf.d
	mv /root/conf/index.php  /usr/share/nginx/html/
	cd /etc/nginx/conf.d/
	mv default.conf default.conf.bak
echo " = = = = = = = = = = = = = nginx安装成功 = = = = = = = = = = = = = ="
}

3、 创建安装mysql脚本
vim /lnmp/include/mysql.sh

#!/usr/bin/env bash
#install mysql
mysql() {
ssh $nip1 << E
cd /root/src/
cd mysql5.6-rpm/
yum -y localinstall *.rpm
systemctl start mysqld
if [ $? -eq 0 ];then
	echo " = = = = = = = = = = = = = mysql启动成功 = = = = = = = = = = = = = "
	mysql -e "create database blog;"
	mysql -e "grant all on blog.* to lisi@'%' identified by '123456';"
	else
	echo " = = = = = = = = = = = = = mysql启动失败 = = = = = = = = = = = = = "
fi
E
}

4、 创建安装php脚本
vim /lnmp/include/php.sh

#!/usr/bin/env bash
#install php

php() {
ssh $nip1 << E
cd /root/src/
cd /root/src/php-rpm/
yum -y localinstall *.rpm
systemctl start php-fpm
if [ $? -eq 0 ];then
	echo " = = = = = = = = = = = = = php启动成功 = = = = = = = = = = = = = "
	sed -i "s/listen = 127.0.0.1:9000/listen = "$nip1":9000/" /etc/php-fpm.d/www.conf
	sed -i "[e-mail]_clients = [e-mail]_clients = "$nip1"@" /etc/php-fpm.d/www.conf
systemctl start nginx
else
	echo " = = = = = = = = = = = = = php启动失败 = = = = = = = = = = = = = "
fi
E
}

5、 创建安装lnmp主脚本
vim /lnmp/lnmp.sh

#!/usr/bin/env bash
#lnmp install
nip1=`cat /root/hosts  | cut -d " " -f 1`

. include/secret_free.sh
. include/init_os.sh
. include/nginx.sh
. include/mysql.sh
. include/php.sh

secret_free
init_os
nginx
mysql
php

为include目录的所有文件授予执行权

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验证

提示：为防止报错，可以先逐个测试，没问题再整体，执行。

阶段验证：
1、 测试初始化系统脚本（创建临时主脚本，只调用执行一个测试函数）

只执行加载某一个模块即可
执行结果：

会有正常提示信息没有允许分配一个终端，因为，我们是做的免密远程登录，没用终端，忽略

在远程主机验证：成功，脚本就是让将拷贝到远程主机root宿主目录的文件，移动到yum文件路径

完全验证：
2、 整体模块加到一起，配女朋友聊会天，回来测试即可！

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总结

提示：此方法适合复杂的功能的场景需求，优势是扩展性强，结构清晰，不易出错，即便出错，利于排查，还可以进行优化，定义变量，软件版本变化，或者精细化，安装目录可以定义成变量；如果增加lvs负载均衡和高可用，都很轻松的添加脚本，稍微修改即可！