shell脚本

开发脚本自动部署及监控

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；

II、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；

2.编写监控脚本，监控集群内所有服务存活状态，内存、磁盘剩余率检测，异常则发送报警邮件

3.编写计划任务，定时运行监控脚本，完成监控操作

1.编写脚本自动部署反向代理、web、nfs；

要求：　

开发脚本自动部署及监控

I、部署nginx反向代理三个web服务，调度算法使用加权轮询；

#!/bin/bash

yum install epel-release -y -q

yum install gcc-* glibc-* openssl openssl-devel pcre pcre-devel zlib zlib-devel -y -q

yum install nginx -y -q

echo "install nginx successful"

if [ -f /etc/nginx/nginx.conf ];then

/bin/cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.bak

sed -ri '/^http/a\t upstream luchuangao { server 192.168.152.135 weight=3; server 192.168.152.136; server 192.168.152.137; }' /etc/nginx/nginx.conf

sed -ri '/^ *location / {/a\t proxy_pass http://luchuangao;' /etc/nginx/nginx.conf

echo "Configuration successful"

if [ $ngxStatus -lt 2 ];then

systemctl start nginx

echo "Start nginx successful"

}

function nfsInstall() {

if [ -e /usr/sbin/rpcinfo ];then

echo "nfs already installed"

exit 111

else

yum install rpcbind nfs-utils -y -q

echo "install NFS successful"

if [ ! -d /share ];then

mkdir -p /share

chmod -R o+w /share

echo '/share 192.168.239.0/24(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

nfsInstall

II、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/sh

ngxStatus=`ps aux | grep -v grep |grep -c nginx`

ipAddress="192.168.239.136"

function ngxWebInstall(){

if [ -e /usr/sbin/nginx ];then

echo "nginx already installed"

exit 110

else

#yum install gcc-* glibc-* openssl openssl-devel pcre pcre-devel zlib zlib-devel -y -q

yum install nginx -y -q

echo "install nginx successful"

if [ -f /etc/nginx/nginx.conf ];then

/bin/cp /etc/nginx/nginx.conf /etc/nginx/nginx.conf.bak

sed -ri '/^ *location / {/a\t root /data/www/html; index index.html;' /etc/nginx/nginx.conf

mkdir -p /data/www/html

echo `hostname` > /data/www/html/index.html

echo "Configuration successful"

if [ $ngxStatus -lt 2 ];then

systemctl start nginx

echo "Start nginx successful"

}

function nfsInstall(){

if [ ! -e /usr/sbin/rpcinfo ];then

yum install rpcbind nfs-utils -y -q

echo "install NFS successful"

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

nfsInstall

2.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.text

server = '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 %s' %(' '.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/sh

function ngxMonitor(){ #监控nginx服务

ps aux | grep nginx| grep -v grep &>/dev/null

if [ $? -ne 0 ];then

msg="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 $msg

systemctl restart nginx

}

function nfsMonitor(){ #监控nfs服务

ps aux | grep nfs| grep -v grep &>/dev/null

if [ $? -ne 0 ];then

msg="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 $msg

systemctl restart nginx

}

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 ];then

yum install bc -y -q

echo "bc install successful"

if (( $mem_per > 10 )); then

msg="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

}

function diskMonitor(){ #监控磁盘

space_use=`df $disk |awk 'NR==2{print $5}'|cut -d% -f1`

if [ $space_use -gt 80 ];then

msg="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

}

ngxMonitor &>>/tmp/monitor.log

nfsMonitor &>>/tmp/monitor.log

memMonitor &>>/tmp/monitor.log

diskMonitor &>>/tmp/monitor.log

3.编写计划任务，定时运行监控脚本，完成监控操作

* * * * * /shell/sysCheck.sh