Using graylog alarm function to realize the regular work reminder of nail group robots

utilize GrayLog The alarm function realizes the regular work reminder of the nail group robots

1、GrayLog Create a new Syslog Input

Used to receive Linux Server system log

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It is suggested to build a Indice

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And configure a separate Stream

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In the firewall Input Port discharge

[[email protected] opt]# firewall-cmd --permanent --zone=public --add-port=2514/udp
success
[[email protected] opt]# firewall-cmd --reload
success

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2、Linux The server system log is accessed to GrayLog

This is just for convenience , Direct use Graylog Act on your own Linux Server log source

[[email protected] opt]# echo "*.* @192.168.31.127:2514;RSYSLOG_SyslogProtocol23Format" >> /etc/rsyslog.conf 
[[email protected] opt]# 
[[email protected] opt]# tail -n 4 /etc/rsyslog.conf 
# remote host is: name/ip:port, e.g. 192.168.0.1:514, port optional
#*.* @@remote-host:514
# ### end of the forwarding rule ###
*.* @192.168.31.127:2514;RSYSLOG_SyslogProtocol23Format
[[email protected] opt]# 
[[email protected] opt]# systemctl restart rsyslog 

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3、 Check whether the log queries normally

You can see that the log is normally accessed

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4、 Write scripts to write system logs regularly and Crontab Timing task

vi replace_username.sh

 #!/bin/bash
temp_day=`date +%a`
case $temp_day in
Mon)
   echo " Today's duty reminder  @ Zhang San A" > /etc/work_alert.txt;
   ;;
Tue)
   echo " Today's duty reminder  @ Li Si B" > /etc/work_alert.txt;
   ;;
Wed)
   echo " Today's duty reminder  @ Wang Wu C" > /etc/work_alert.txt;
   ;;
Thu)
   echo " Today's duty reminder  @ Yuan fan ( Xingyun ) " > /etc/work_alert.txt;
   ;;
Fri)
   echo " Today's duty reminder  @ Yuan fan " > /etc/work_alert.txt;
   ;;
Sat)
   echo " Today's duty reminder  @ Zhang San F" > /etc/work_alert.txt;
   ;;
Sun)
   echo " Today's duty reminder  @ Zhang San G" > /etc/work_alert.txt;
   ;;
*)
  exit;
esac

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Configure scheduled tasks for this month

crontab -e
1  0 1,2,6,7,8,9,10,13,14,15,16,17,20,21,22,23,24,27,28,29,30  * * /opt/replace_username.sh
00 17 1,2,6,7,8,9,10,13,14,15,16,17,20,21,22,23,24,27,28,29,30  * * /usr/bin/logger -f /etc/work_alert.txt

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That is to say 6 The working day of the month

1、 Every day 0 spot 1 Automatic replacement /etc/work_alert.txt In file @ Name of person , The relevant weekly and daily shifts are for different personnel

2、 Every day 17 Execute at point logger -f The command is written to the system log

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5、 To configure Alert Alarm template

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Search Query " Today's duty reminder " Search within the last You can write 5 Minutes or less 3 minute

Execute search every Suggestions follow Search within the last Set the same time

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PrometheusAlert Please configure the alarm template on

The following screenshots

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6、 Manually trigger the log and test the alarm

[[email protected] opt]# /usr/bin/logger -f /etc/work_alert.txt 
[[email protected] opt]# date
Thu Jun  9 23:21:51 CST 2022
[[email protected] opt]# cat /etc/work_alert.txt

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wait for 5 Minutes to observe whether the alarm can be received

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7、Tips

1) Theoretically crontab If there is no problem with the scheduled task script , The alarm will be sent normally

2)PrometheusAlert close @ All the people And alarm notification Title Modification

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3） explain ： Now find @ Someone's function failed

Still to be studied , Need to rewrite replace_username.sh Script