How to use Crontab to regularly monitor and maintain Tomcat applications in Linux

王林
Release: 2023-05-14 08:07:05
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监测的应用接口: 新闻接口、天气接口
处理方法:应用接口不可用时自动重启tomcat,并发送告警邮件给相关人员

#!/bin/bash
#---------------------------------------------------------
# 功能说明:
#	监控指定http服务是否可用,如果不可用立即重启tomcat
#
# 使用说明:
#	1. 将此脚本放置在/home/opentsp/crontab/目录下。
#	2. 修改脚本执行权下为可执行权限。
#	3. 添加到定时任务中,定时执行时间(建议为20分钟)
#	4. 修改邮件发送人员信息列表(当服务重启时发邮件给相关人员)
#                    - 周凌飞(2014-08-13)
#---------------------------------------------------------
export lc_all=zh_cn.utf-8

#网站地址、参数
server_name="趣驾云接口服务"
url_2="http://127.0.0.1/get_rss_news?p=%7b%27chid%27:%27tiyu%27%7d"
keyworld_2=&#39;<title>&#39;
url_3="http://127.0.0.1/get_json_weather?p=%7blon:116.407617,lat:39.993956,date:1%7d"
keyworld_3=&#39;temperature&#39;

#邮件发送列表
mail_ary=(
xxxxxxxxx@navinfo.com
xxxxxxxxx@navinfo.com
xxxxxxxxx@navinfo.com
)

#接口调用失败的处理方法
function dofail(){
	local ipinfo=$(ifconfig |sed -n &#39;2p&#39;|awk &#39;{print substr($2,6)}&#39;);
	# 发送邮件
	for _v in ${mail_ary[*]} ; do
		echo "[$server_name 异常] - [$(date -d "0 min" +"%y-%m-%d %h:%m:%s")] - [请求地址: $1] - [请求返回码: $2]" | mail -s ${ipinfo}服务异常 ${_v}
	done
	# 写入日志
	echo "[error] - [$(date -d "0 min" +"%y-%m-%d %h:%m:%s")] - 返回码[$2] - 重启tomcat服务" >> detect-http.log
	# 关闭tomcat
	sh /home/opentsp/crontab/ibr-shutdown.sh
	exit;
}

#请求超时时间设置
time_out=40
function docheck(){
	local url_x=$1;
	local keyworld_x=$2;
	http_status_code=`curl -m $time_out -o /dev/null -s -w "%{http_code}" "${url_x}"`
	if [ $http_status_code != 200 ];then
		#请求失败
		echo "-> fail - 返回码${http_status_code}";
		dofail ${url_x} ${http_status_code};
	else
		#服务器正常响应,检查返回内容
		if curl -m ${time_out} -s ${url_x} | grep -q ${keyworld_x};then
			echo "-> success";
		else
			echo "->> fail";
			# 返回内容错误处理
			dofail ${url_x} ${http_status_code};
		fi
	fi
}

#
#检查 - 新闻
docheck ${url_2} ${keyworld_2}
#检查 - 天气
docheck ${url_3} ${keyworld_3}
Copy after login

将以上代码放入到linux的定时任务中即可,定时任务时间建议为20分钟一次。

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