Monitor the service, alarm, and start the service regularly

Scripting function: Monitor the service process every 5 minutes, this process is 3 Tomcat service, when the service hangs, send alarm mail, and start the service

1: Create a log File script

[email protected] ~]# cat a.sh
#!/bin/bash
B=a. ' Date +%y%m%d-%t '. Log

Echo-n "-------------------------$b"

[Email protected] ~]# sh a.sh
-------------------------A.20150604-18:04:20.log

2: Create a service startup script

#!/bin/bash

B=a. ' Date +%y%m%d-%t '. Log

#sh/opt/apache-tomcat-6.0.35/bin/startup.sh && tail-f/opt/apache-tomcat-6.0.35/logs/catalina.out >> $b &

sh/opt/apache-tomcat-6.0.35/bin/startup.sh >> $b &

Sleep 30

echo "tomcat8081 start ********************************************************************" >> $b &

#sh/opt/apache-tomcat-6.0.35_8082/bin/startup.sh && tail-f/opt/apache-tomcat-6.0.35_8082/logs/ Catalina.out >> $b &

# #如果采用tail log output, all the logs will be entered into this file # #

sh/opt/apache-tomcat-6.0.35_8082/bin/startup.sh >> $b &

Sleep 60

echo "tomcat8082 start over********************************************************************" >> $b &

#sh/opt/apache-tomcat-6.0.35_8083/bin/startup.sh && tail-f/opt/apache-tomcat-6.0.35_8083/logs/ Catalina.out >> $b &

sh/opt/apache-tomcat-6.0.35_8083/bin/startup.sh >> $b &

Sleep 90
echo "tomcat8083 start ********************************************************************" >> $b &

3. Send alert SMS via external SMTP Service

Yum-y Install MAILX

Yum-y Install SendMail

Start the SendMail service.

Service SendMail Start

Configure MAIL.RC External SMTP Service

Set [email protected]
Set smtp=mail.qq.com
Set [email protected]
Set SMTP-AUTH-PASSWORD=QQ
Set Smtp-auth=login

Test echo java stop,please Check | Mail-s "title" [Email protected]

We see that the above Mail has been sent successfully!

4: Modify service startup script, send alarm SMS when service hangs, and start service

Start_java () {

killall-9 Java
B=a. ' Date +%y%m%d-%t '. Log

sh/opt/apache-tomcat-6.0.35/bin/startup.sh && tail-f/opt/apache-tomcat-6.0.35/logs/catalina.out >> $ B &

Sleep 30

echo "tomcat8081 start ********************************************************************" >> $b &

sh/opt/apache-tomcat-6.0.35_8082/bin/startup.sh && tail-f/opt/apache-tomcat-6.0.35_8082/logs/ Catalina.out >> $b &

echo "tomcat8082 start **********************************************************************" >> $b &

sh/opt/apache-tomcat-6.0.35_8083/bin/startup.sh && tail-f/opt/apache-tomcat-6.0.35_8083/logs/ Catalina.out >> $b &

echo "tomcat8083 start **************************************************************************" >> $b &
}

proess_num= ' ps-c Java--no-header|wc-l '

If [$proess _num-ne 3];then
echo "' Hostname= $HOSTNAME ' $IP ' error,please check ' | Mail-s "Wheat-conver" [email protected] [email protected]
Start_java
Fi

5: Add timed Tasks, detect every 5 minutes

Crontab-e

　　

Introduction to the use of the 5:mail command

When you use mail to send mail, you must first start the SendMail service.

Mail–s "Mail Subject" –c "CC Address" –b "BCC address"---F sender e-mail address –F sender name < message content to send

Mail-s test [email protected] #第一种方法, you can use the current shell as an editor, finish editing the content ctrl-d end

echo "Mail Content" |mail-s test [email protected] #第二种方法, I used the most, probably like the plumbing for the sake of it

Mail-s test [email protected] < file #第三种方法 to send the contents of the file to the message

Monitor the service, alarm, and start the service regularly