监控各项服务

比如有三个服务,

为了减少故障时间,增加监控任务,使用linux的 crontab 实现.

步骤:

1,每个服务写一个ping接口

监控如下内容:
1,HouseServer 是否正常运行,所以需要增加一个ping的接口 ; http://house.yhskyc.com/ping 2,gitlab服务是否正常访问 http://git.yhskyc.com/users/sign_in 返回HTML 包含"Open source software to collaborate on code";
3,小幺鸡,是否正常 http://api.yunmasoft.com/api/ping/xiaoyaoji
标准:不要求接口正确性,只要求返回200就行

2,封装一个可执行的jar包专门用来发送短信



执行如下命令,即可发送短信

/usr/java/jdk1.8.0_152/bin/java -jar sendsmsbyqcloud-0.0.1-snapshot.jar 18732670186 "服务器挂了,请速检查`date +%F`"

短信发送使用腾讯云

参考:
https://console.cloud.tencent.com/sms/smsinfo/1400091325/0 认证信息: https://console.cloud.tencent.com/developer/auth https://console.cloud.tencent.com/sms/smslist

发送短信的可执行jar包
java -jar sendSMSByQcloud-0.0.1-SNAPSHOT.jar 18743210186 请去检查服务器
log4j:WARN No appenders could be found for logger (com.io.hw.json.HWJacksonUtils).
log4j:WARN Please initialize the log4j system properly.
:{"appid":1400091325,"appkey":"ab14f5b7a06feab6b8f91af82ce75663","mobile":"18701670186","msg":"请去检查服务器"}
{"result":0,"errmsg":"OK","ext":"","sid":"8:cV1DTDeJxq1qqSnbwvs20180625","fee":1}

3,写linux shell脚本,用于判断接口是否正常

脚本名称:monitor2.sh

#!/bin/bash
# monitor if Service normal,send SMS  when ether service is down
sendSMS(){
echo "error.发送短信"
cd /home/whuang/bin/sms
/usr/java/jdk1.8.0_152/bin/java -jar sendsmsbyqcloud-0.0.1-snapshot.jar 18743670186 "服务器挂了,请速检查`date +%F`"
}
testHttp(){
url2="$1"
xiaoyaoji_result=`curl  --get --compressed $url2` >>/dev/null
#echo "resut111:$xiaoyaoji_result"
echo "$xiaoyaoji_result" |grep "true"
result2=$?
#echo $result2
if [ $result2 -ne 0 ];then
sendSMS
exit 14
fi

}

testHttpGitLab(){
xiaoyaoji_result=`curl  --get --compressed 'http://git.yhskyc.com/users/sign_in'` >>/dev/null
#echo "resut111:$xiaoyaoji_result"
echo "$xiaoyaoji_result" |grep "Open source software to collaborate on code"
result2=$?
#echo $result2
if [ $result2 -ne 0 ];then
sendSMS
exit 14
fi

}
testHttp 'http://house.yhskyc.com/ping'
testHttp 'http://api.yunmasoft.com/api/ping/xiaoyaoji'
testHttpGitLab

脚本说明:

1, sendSMS,testHttp 是shell 函数;

2,使用grep来校验接口返回结果.

3,发送短信命令:

/usr/java/jdk1.8.0_152/bin/java -jar sendsmsbyqcloud-0.0.1-snapshot.jar 18732170186 "服务器挂了,请速检查`date +%F`"

蓝色标记的是jar包的参数

注意:

可能crontab 中执行时会出现如下两个错误:

(1)找不到java命令,

解决 方法:java命令使用绝对路径

(2)shell脚本中使用相对路径的统一改为绝对路径

4,创建定时任务

*/10 * * * * /home/whuang/bin/sms/monitor2.sh  2>> /home/whuang/bin/sms/error.log

命令:crontab -e

linux crontab 语法说明:

*/20 * * * * /Users/whuanghk/study/cron/todo.sh
每20分钟执行一次

20 7 * * * /home/whuang/software/auto_start_tomcat.sh
每天的上午7点20分执行脚本