1.编写脚本自动部署反向代理、web、nfs；
要求：
I、部署nginx反向代理三个web服务，调度算法使用加权轮询；
#!/bin/shngxStatus=`ps aux | grep -v grep |grep -c nginx`function ngxProxyInstall() {
if [ -e /usr/sbin/nginx ];thenecho "nginx already installed"exit 110
elseyum install epel-release -y -qyum install gcc-* glibc-* openssl openssl-devel pcre pcre-devel zlib zlib-devel -y -qyum install nginx -y -qecho "install nginx successful"
fi
if [ -f /etc/nginx/nginx.conf ];then/bin/cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.baksed -ri '/^http/a\\t upstream luchuangao { \n\t server 192.168.152.135 weight=3;\n\t server 192.168.152.136;\n\t server 192.168.152.137;\n\t }' /etc/nginx/nginx.confsed -ri '/^ *location \/ \{/a\\t\t proxy_pass http://luchuangao;' /etc/nginx/nginx.confecho "Configuration successful"
fi
if [ $ngxStatus -lt 2 ];thensystemctl start nginxecho "Start nginx successful"
fi
}function nfsInstall() {
if [ -e /usr/sbin/rpcinfo ];thenecho "nfs already installed"exit 111
elseyum install rpcbind nfs-utils -y -qecho "install NFS successful"
fiif [ ! -d /share ];thenmkdir -p /sharechmod -R o+w /share
fi
echo '/share 192.168.152.0/24(rw,sync,fsid=0)' > /etc/exports
systemctl enable rpcbind.service
systemctl enable nfs-server.service
systemctl start rpcbind.service
systemctl start nfs-server.service
echo "Start NFS successful"
}ngxProxyInstall
nfsInstallII、所有web服务使用共享存储nfs，保证所有web都对其有读写权限，保证数据一致性；
#!/bin/shngxStatus=`ps aux | grep -v grep |grep -c nginx`
ipAddress="192.168.152.134"function ngxWebInstall(){
if [ -e /usr/sbin/nginx ];thenecho "nginx already installed"exit 110
else#yum install gcc-* glibc-* openssl openssl-devel pcre pcre-devel zlib zlib-devel -y -qyum install nginx -y -qecho "install nginx successful"
fi
if [ -f /etc/nginx/nginx.conf ];then/bin/cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.baksed -ri '/^ *location \/ \{/a\\t\t root /data/www/html;\n\t\t index index.html;' /etc/nginx/nginx.confmkdir -p /data/www/htmlecho `hostname` > /data/www/html/index.htmlecho "Configuration successful"
fi
if [ $ngxStatus -lt 2 ];thensystemctl start nginxecho "Start nginx successful"
fi
}function nfsInstall(){
if [ ! -e /usr/sbin/rpcinfo ];thenyum install rpcbind nfs-utils -y -qecho "install NFS successful"
fi
systemctl enable rpcbind.service
systemctl enable nfs-server.service
systemctl start rpcbind.service
systemctl start nfs-server.service
mount -t nfs $ipAddress:/share /data/www/html/
echo "welcome luchuangao" > /data/www/html/test.html
}ngxWebInstall
nfsInstall2.编写监控脚本，监控集群内 Nginx、NFS 服务存活状态，内存、磁盘剩余率检测，异常则发送报警邮件
步骤一：准备发送邮件的工具
#!/usr/bin/python
# -*- coding: UTF-8 -*-
import sys
import smtplib
import email.mime.multipart
import email.mime.textserver = 'smtp.163.com'
port = '25'def sendmail(server,port,user,pwd,msg):smtp = smtplib.SMTP()smtp.connect(server,port)smtp.login(user, pwd)smtp.sendmail(msg['from'], msg['to'], msg.as_string())smtp.quit()print('邮件发送成功email has send out !')if __name__ == '__main__':msg = email.mime.multipart.MIMEMultipart()msg['Subject'] = '你是风儿我是沙，缠缠绵绵回我家'msg['From'] = 'python4_mail@163.com'msg['To'] = 'python4_recvmail@163.com'user = 'python4_mail'pwd = 'sbalex3714'content='%s\n%s' %('\n'.join(sys.argv[1:4]),' '.join(sys.argv[4:])) #格式处理，专门针对我们的邮件格式txt = email.mime.text.MIMEText(content, _charset='utf-8')msg.attach(txt)
步骤二：将上述文件内容拷贝到/usr/bin/my_mail并chmod+x /usr/bin/my_mail
步骤三：然后新建监控脚本sysCheck.sh
#!/bin/shfunction ngxMonitor(){ #监控nginx服务
ps aux | grep nginx| grep -v grep &>/dev/null
if [ $? -ne 0 ];thenmsg="TIME:$(date +%F_%T)HOSTNAME:$(hostname)IPADDR:$(/usr/sbin/ifconfig |awk 'NR==2{print $2}')MSG:Nginx program is crash, Waiting to restart"echo $msg/usr/bin/my_mail $msgsystemctl restart nginx
fi
}function nfsMonitor(){ #监控nfs服务
ps aux | grep nfs| grep -v grep &>/dev/null
if [ $? -ne 0 ];thenmsg="TIME:$(date +%F_%T)HOSTNAME:$(hostname)IPADDR:$(/usr/sbin/ifconfig |awk 'NR==2{print $2}')MSG:NFS program is crash, Waiting to restart"echo $msg/usr/bin/my_mail $msgsystemctl restart nginx
fi
}function memMonitor(){ #监控内存
mem_use=`free | awk 'NR==2{print $3}'`
mem_total=`free | awk 'NR==2{print $2}'`
mem_per=`echo "scale=2;$mem_use/$mem_total"|bc -l |cut -d . -f2`if [ ! -e /usr/bin/bc ];thenyum install bc -y -qecho "bc install successful"
fi
if (( $mem_per > 10 )); thenmsg="TIME:$(date +%F_%T)HOSTNAME:$(hostname)IPADDR:$(/usr/sbin/ifconfig |awk 'NR==2{print $2}')MSG:Memory usage exceeds the limit,current value is ${mem_per}%"echo $msg/usr/bin/my_mail $msg
fi
}function diskMonitor(){ #监控磁盘
space_use=`df $disk |awk 'NR==2{print $5}'|cut -d% -f1`if [ $space_use -gt 80 ];thenmsg="TIME:$(date +%F_%T)HOSTNAME:$(hostname)IPADDR:$(/usr/sbin/ifconfig |awk 'NR==2{print $2}')MSG:Disk space usage exceeds the limit,current value is ${space_use}%"echo $msg/usr/bin/my_mail $msg
fi
}ngxMonitor &>>/tmp/monitor.log
nfsMonitor &>>/tmp/monitor.log
memMonitor &>>/tmp/monitor.log
diskMonitor &>>/tmp/monitor.log3.编写计划任务，定时运行监控脚本，完成监控操作
* * * * * /shell/sysCheck.sh
参考链接：http://www.cnblogs.com/linhaifeng/p/6602149.html
参考链接：http://www.cnblogs.com/linhaifeng/articles/6045600.html#_label21
