epel是一种yum仓库，里面提供了更多、更丰富linux软件，但是，它不是默认yum仓库，我们需要手工添加这个yum源。

添加epel源

参考：http://freeloda.blog.51cto.com/2033581/1260824

这里使用搜狐的镜像，http://mirrors.sohu.com

然后，找到fedora-epel,

http://mirrors.sohu.com/fedora-epel/

在列表里找到：6server，（这里指的是linux的发行版，具体，按照自己的情况来，是5.X,就找5，是6.X，就找6,比如，是6.Xserver系列等，就找6server）。

接着，从链接 http://mirrors.sohu.com/fedora-epel/6Server/ 进入，

继续根据自己的安装发行版选择，是i386还是X86_64，

我这里 选择的是X86_64,点击链接，就进入了：

http://mirrors.sohu.com/fedora-epel/6Server/x86_64/

接下来会列出很多软件，用浏览器搜一下epel，会找到一个

epel-release-6-8.noarch.rpm

复制该软件包地址，软后使用wget进行下载

[root@localhost ~]# wget http://mirrors.sohu.com/fedora-epel/6Server/x86_64/epel-release-6-8.noarch.rpm

下载完毕后进行安装

[root@localhost ~]# yum localinstall  epel-release-6-8.noarch.rpm 

安装完毕，导入gpg-key

[root@localhost ~]# rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6

[root@localhost ~]# yum clean all

[root@localhost ~]# yum makecache   可以看到，epel源已经加进来了。

[root@localhost ~]# yum install lrzsz 

通过yum安装nginx

1.安装nginx源

rpm -ivh http://nginx.org/packages/centos/6/noarch/RPMS/nginx-release-centos-6-0.el6.ngx.noarch.rpm

2.安装nginx

Yum install nginx

Service nginx start   启动nginx

3.然后进入浏览器，输入http://ip/测试，如果看到nginx说明安装成功！

脚本安装MySQL服务端

环境：Centos6.5      mysql: 5.6.20

#!/bin/bash
# Script Name: One-key Automatic Install MySQL serverMYSQL_USER_ROOT_PASSWORD="redhat"
CMAKE_INSTALL_PREFIX="/usr/local/mysql"
MYSQL_DATADIR="/wwwroot/data"
DEFAULT_CHARSET="utf8"
DEFAULT_COLLATION="utf8_general_ci"echo -n "--Installing related software..."
yum -y install gcc gcc-c++ make cmake bison ncurses-devel unzip wget perl > /dev/null 2>&1 && echo "Completed!"echo -n "--Installing mysql-server..."
(
useradd -M -s /sbin/nologin mysql
mkdir -p $MYSQL_DATADIR
chown -R mysql:mysql $MYSQL_DATADIR
wget -P /tmp/ http://dev.mysql.com/get/Downloads/MySQL-5.6/mysql-5.6.20.tar.gz
tar xzf /tmp/mysql-5.6.20.tar.gz -C /usr/src/
cd /usr/src/mysql-5.6.20/
cmake -DCMAKE_INSTALL_PREFIX=$CMAKE_INSTALL_PREFIX -DMYSQL_DATADIR=$MYSQL_DATADIR -DDEFAULT_CHARSET=$DEFAULT_CHARSET -DDEFAULT_COLLATION=$DEFAULT_COLLATION
make
make install
) > /dev/null 2>&1 && echo "Completed!"echo -n "--Initializing..."
(
cd /usr/local/mysql/
./scripts/mysql_install_db --user=mysql --basedir=$CMAKE_INSTALL_PREFIX --datadir=$MYSQL_DATADIR
/bin/cp -f $PWD/support-files/mysql.server /etc/init.d/mysqld
/bin/cp -f $PWD/support-files/my-default.cnf /etc/my.cnf
echo "PATH=$CMAKE_INSTALL_PREFIX/bin/:$PATH" >> /etc/profile
chkconfig --add mysqld
chkconfig mysqld on
service mysqld start
$CMAKE_INSTALL_PREFIX/bin/mysqladmin -uroot password $MYSQL_USER_ROOT_PASSWORD
) > /dev/null 2>&1 && echo "Completed!"

运行完以上脚本后需手动运行一下以下命令：

source /etc/profile

shell脚本监控网站页面

使用shell脚本写一个监控。通过curl一个固定页面的200状态码，如果是200，就说网站是正常的,如果不是200就自动重启网站，然后发邮件到QQ邮箱。自己在上QQ的同时，通过微信也可以收到报警，不但可以收到报警，还可以解决问题。基本上也可以解决web的故障。

#! /bin/bash
source /etc/profile
A="web is Good !"
ip=`ifconfig eth0 | grep "inet addr" | awk -F "[: ]+" '{print $4}'`
tt1=`curl -I -s http://xx.8x.18x.xx:1657/product/pro_detail_-rg000785.shtml | head -1 | cut -d " " -f2`
Process=`ps -ef | grep java | egrep  "tomcat1" | awk -F " " '{print $2}'`
if [ $tt1 = "200" ]thenecho "$A" >>/home/taoyake/scripts/website-error.`date +%F`.log
else/opt/tomcat1/bin/shutdown.shcd /opt/tomcat1/work/Catalina/rm -rf localhostkill -9 $Process/opt/tomcat1/bin/startup.shecho "1657 is reload." >>/home/taoyake/scripts/website-error.`date +%F`.logecho "1657 is reload." | mail -s "website-1657" "505065674@qq.com"
fi
=========================================================more /home/taoyake/scripts/reload_website-1658.sh
#! /bin/bash
source /etc/profile
B="1658 is Good !"
ip=`ifconfig eth0 | grep "inet addr" | awk -F "[: ]+" '{print $4}'`
tt1=`curl -I -s http://xx.xx.183.xx:1658/product/pro_detail_-rg000785.shtml | head -1 | cut -d " " -f2`
Process=`ps -ef | grep java | egrep  "tomcat2" | awk -F " " '{print $2}'`
if [ $tt1 = "200" ]thenecho "$B" >>/home/taoyake/scripts/website-1658-access.`date +%F`.log
else/opt/tomcat2/bin/shutdown.shcd /opt/tomcat2/work/Catalina/rm -rf localhostkill -9 $Process/opt/tomcat2/bin/startup.shecho "1658 is reload." >>/home/taoyake/scripts/website-1658-error.`date +%F`.logecho "1658 is reload." | mail -s "website-1658" "505065674@qq.com"
fi
[root@web ~]# crontab -l
*/10 * * * * /usr/sbin/ntpdate time.windows.com >/dev/null 2>&1
*/5 * * * * /bin/sh /home/taoyake/scripts/reload_website.sh >/dev/null 2>&1
*/5 * * * * /bin/sh /home/taoyake/scripts/reload_website-1658.sh >/dev/null 2>&1