Ubuntu :: Ubuntu set track ping to other host. For check online or down.

Ubuntu :: Ubuntu set track ping to other host. For check online or down.
Use php and bash shell run crontab. On Ubuntu 18.04
1. Install software.

1. sudo apt-get install apache2

1. sudo apt install php libapache2-mod-php

1. sudo apt-get install ssmtp mailutils mpack

2. Set timezone.
List

1. timedatectl list-timezones

Set

1. timedatectl set-timezone Asia/Bangkok

3. Create file php.

1. nano /var/www/check-sonoff.php

insert code

1.  
2. <?php
3. $strDateTime = date("Y-m-d H:i:s");
4.  
5. $strToPost = "\nFrom Home Assistan : {$strDateTime} \n";
6. $ret = mail("komkid@gmail.com,suwit.jph@gmail.com,seksan.kamt56@gmail.com", "Internet Test Speed is low. Please Check Internet Connection.", $strToPost, "From: Proxy Server\n");$
7. //$ret = mail("suwit.jph@gmail.com", "Can't connect sonoff Garden. Please Check WIFI Or Sonoff.", $strToPost, "From: Home Assistan \n");
8.  
9. ?>

4. Config send mail.
backup original file.

1. cp /etc/ssmtp/ssmtp.conf ssmtp.conf.backup

1. nano /etc/ssmtp/ssmtp.conf

replace all code.

1. #
2. # Config file for sSMTP sendmail
3. #
4. # The person who gets all mail for userids < 1000
5. # Make this empty to disable rewriting.
6. #root=postmaster
7. root=scivalve.suwit@gmail.com
8.  
9. # The place where the mail goes. The actual machine name is required no
10. # MX records are consulted. Commonly mailhosts are named mail.domain.com
11. mailhub=mail
12. mailhub=smtp.gmail.com:587
13.  
14. # Where will the mail seem to come from?
15. #rewriteDomain=
16.  
17. # The full hostname
18. #hostname=scivalve.suwit@gmail.com
19. hostname=localhost
20.  
21. # Are users allowed to set their own From: address?
22. # YES - Allow the user to specify their own From: address
23. # NO - Use the system generated From: address
24. #FromLineOverride=YES
25.  
26. AuthUser=MAIL GMAIL
27. AuthPass=PASSWORD
28. useSTARTTLS=YES
29.  
30. TLS_CA_File=/etc/ssl/certs/ca-certificates.crt

5. Test send mail.

1. /usr/bin/php /var/www/check-sonoff.php

6. Create file for check ping to other server.

1. nano check-sonoff.sh

insert code.

1. #!/bin/bash
2. SERVERIP=192.168.0.210
3.  
4. ping -c 3 $SERVERIP > /dev/null 2>&1
5. if [ $? -ne 0 ]
6. then
7.    # Call php file send mail here:
8.    /usr/bin/php /var/www/check-sonoff.php
9. fi

7. Test sell.

1. bash check-sonoff.sh

8. Set crontab. run bash file.

1. #Check Ping Sonoff Every 1 Hours
2. 0 8-18 * * 1-6 bash /check-sonoff.sh

https://unix.stackexchange.com/questions/56340/bash-script-to-detect-when-my-server-is-down-or-offline
https://askubuntu.com/questions/3375/how-to-change-time-zone-settings-from-the-command-line