shell脚本持续更新

1.用shell查看磁盘是否大于80%并发送邮箱告警。

分析如何查看磁盘占用:

# df -h | grep /dev/vda1 | awk '{print $5}' |cut -d "%" -f1
或者
# df -h | grep /dev/vda1 | awk '{print $5}' |awk -F "%" '{print $1}'

考虑到shell脚本if判断是否大于80,写入脚本:

#!/bin/bash
rate=`df -h | grep /dev/vda1 | awk '{print $5}' |cut -d "%" -f1`
if [ $rate -ge 80 ];
      then
      python /root/mail.py 123456@qq.com "邮件主题" "邮件内容/dev/vda1 The disk is full"
 fi

python脚本:

#!/usr/bin/python
#coding:utf-8

import smtplib
from email.mime.text import MIMEText
import sys

#发信地址
mail_user = 'admin@' //账号
#发信地址的SMTP密码
mail_pass = 'pqj0Ll6yd' //密码

def send_mail(to_list,subject,content):
    me = "aliyun告警平台"+"<"+mail_user+">"
    msg = MIMEText(content, 'plain', 'utf-8')
    msg['Subject'] = subject
    msg['From'] = me
    msg['to'] = to_list

    try:
    	#定义阿里云提供的SMTP服务地址
        s = smtplib.SMTP("smtpdm.aliyun.com", 25) //注,阿里云服务器是没开放25端口,改80端口即可
        s.login(mail_user,mail_pass)
        s.sendmail(me,to_list,msg.as_string())
        s.close()
        return True
    except Exception,e:
        print str(e)
        return False

if __name__ == "__main__":
    send_mail(sys.argv[1], sys.argv[2], sys.argv[3])

 

测试结果:

 

 

2.判断nginx80端口是否开启,如果不开启,自动开启

首先网络扫描nmap默认包是不存在,安装

# yum install -y nmap

分析端口是否开放

# nmap -sT 192.168.109.136 | grep tcp |grep http |awk '{print $2}'
open

用shell脚本判断

 #!/bin/bash
  nginx=`nmap -sT 192.168.109.136 | grep tcp |grep http |awk '{print $2}'`
  data=`date +%Y%m%d`
  if [ "$http" == "open" ]
      then
      echo "$data nginx is ok! " >> /tmp/http-acc.log
      else
      /etc/init.d/nginx start &>/dev/null
      python /usr/local/sbin/mail.py 123456@qq.com "监控nginx宕机自动重启告警" "$data restart nginx!!!"//可以去掉告警
      echo "$data restart nginx !" >> /tmp/http-err.log
  fi

测试结果

 

 3.用shell每天零晨备份mysql数据库,备份数据传输到备份服务器

#!/bin/bash
datadir=/tmp/mysql/`date +%Y%m%d` //定义时间
datadb=dedecms //库名
datadb1=discuz //库名
datadb2=zrlog //库名
dbuser=root //用户
dbpass=123 //密码
backcmd=mysqldump //备份命令 注:最好绝对路径
if [ ! -d $datadir ];then //判断是否存在
        mkdir -p $datadir //不存在创建
        echo "mkdir successful" //成功
else
        echo "mkdir failure" //失败,失败可能是目录存在,不用管
fi
$backcmd -u$dbuser -p$dbpass $datadb >$datadir/$datadb.sql //备份
$backcmd -u$dbuser -p$dbpass $datadb1 >$datadir/$datadb1.sql //备份
$backcmd -u$dbuser -p$dbpass $datadb2 >$datadir/$datadb2.sql //备份
rsync -avP /tmp/mysql/ 172.31.215.135:/tmp/mysql //上传到备份服务器

4.静态文件备份,要传到备份静态服务器

#!/bin/bash
BCK_DIR="/tmp/data" //定义路径
WEB_DIR="/mnt/*" //定义备份路径
DATE=`date +%F` //时间
DATE_YEAR=`date +%Y` //时间
DATE_MONTH=`date +%m` //时间
days=7 //时间

if test -d $BCK_DIR/$DATE_YEAR/$DATE_MONTH //判断
then
    echo "directory  $BCK_DIR/$DATE_YEAR/$DATE_MONTH exists."
else
    echo "directory $BCK_DIR/$DATE_YEAR/$DATE_MONTH does not exists. make dir..."
    mkdir -p $BCK_DIR/$DATE_YEAR/$DATE_MONTH //不存在创建
fi

# Backup
tar -czf $BCK_DIR/$DATE_YEAR/$DATE_MONTH/web_$DATE.tar.gz  $WEB_DIR //打包
find $BCK_DIR/$DATE_YEAR/ -type f -name "*.tar.gz" -mtime +$days -exec  rm -rf {} \; //超过7天删除
rsync -avP $BCK_DIR 172.31.215.135:/tmp/data/ //拷贝到备份服务器

5.批量创建用户并设置密码,把密码写入文件

  1. 随机密码使用命令 mkpasswd
  2. 在脚本中给用户设置密码,可以使用echo 然后管道passwd命令

 实现脚本如下:

#!/bin/bash
for i in `seq 00 09`
do
useradd user$i
pass=`mkpasswd`
echo "user$i $pass" >> /root/shell.txt
echo "$pass" |passwd --stdin user$i &> /dev/null
done         

批量删除用户

#!/bin/bash
for i in `seq 00 09`
do
userdel -r user$i
done

监控java程序,自动重启

#!/bin/bash
jarname='acd.jar'
data=`date '+%Y-%m-%d %H:%M:%S'`
pid=`ps aux | grep $jarname | grep -v grep | awk '{print $2}'`
arr=($pid)
len=${#arr[@]}
if [ $len -gt 0 ]
then
echo "$data acd.jar is ok" >> /tmp/acd-acc.log
else
nohup java -Xms128m -Xmx258m -jar acd-cms.jar > /dev/null 2>&1 &
echo "$data restart acd.jar !" >> /tmp/acd-err.log
fi

 

posted @ 2019-12-11 15:49  烟头001  阅读(538)  评论(0编辑  收藏  举报