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demo.md
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demo.md
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#### 检测 Web 服务器
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新建文件 `vim ~/http.sh` 写入以下内容
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```
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#!/bin/bash
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ip=xxxxxx #自定义
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port=$(nmap -sT $ip | grep tcp | grep http | grep 80 | awk '{print $2}')
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if [ "$port" == "" ]; then
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systemctl restart nginx
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echo "http error $(date +%Y-%m-%d' '%H:%M:%S)" >> ~/http_logs_error.log
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fi
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```
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设置定时任务
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```
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*/10 * * * * ~/http.sh #
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```
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---
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#### 备份数据库
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新建文件 `vim ~/mysqldump.sh` 写入以下内容
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```
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#!/bin/bash
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dir=~/data_bak #自定义
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filename=demo #自定义
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username=nick #自定义
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password=xxx #自定义
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database=demo #自定义
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if [ -d $dir ]; then
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mysqldump -u$username -p$password $database | gzip > $dir/$filename\_$(date +%Y%m%d).sql.gz
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else
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mkdir $dir
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mysqldump -u$username -p$password $database | gzip > $dir/$filename\_$(date +%Y%m%d).sql.gz
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fi
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```
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设置定时任务
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```
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1 3 * * 0 ~/mysqldump.sh # 每周日凌晨3点1分执行
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```
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补充:新建的 `shell` 脚本默认没有执行权限,需要自己添加
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