Shell implementation checks for memory alarms

Use the shell implementation to check the memory size, if it is displayed within the set value, send an email alert

1. Configure Outgoing Mail first

   Vi/etc/mail.rc

   Add the following information

2. # for Linux and BSD, this should is Set.set bsdcompatset [email protected] Smtp=smtp.163.comset Smtp-auth-user=alvin smtp- auth-password=123456 Smtp-auth=login

#注意: [email protected] is your e-mail account, Alvin is your mailbox user name, 123456 is your email password

The following is a memory exceeded mailbox Alert script:

[email protected] script]# cat check_memory.sh #!/bin/bashfreemem= ' Free-m|awk ' nr==3 {print $NF} ' chars= ' current Memor Y is $FreeMem. " chars1= "Memory Alert" if [$FreeMem-lt 1800] then echo $CHARS >/tmp/messages.txt mail-s "' Date +%f-% T ' $CHARS 1 "[email protected] </tmp/messages.txtelse echo $CHARSfi

In order to be able to send an email to the police, I set the larger here (1800) The actual production environment settings are not set so large.

To demonstrate this script, you can delete the Echo $CHARS and join the timed task, which executes every 3 minutes.

*/3 * * * */bin/sh/server/script/check_memory.sh &>/dev/null

This article is from the "Knowledge Change Destiny" blog, please be sure to keep this source http://ahtornado.blog.51cto.com/4826737/1930320

Shell implementation checks for memory alarms