?Notifications for a network node rebooting
This is a simple mechanism to notify a person of a system reboot. This will work on most Linux systems including SDWAN nodes. In the latter case, the cause is often a power outage.
Install Pushbullet on your phone and PC after registering for an account. Create an access token in the settings section.
On the Linux node create a bash script in /usr/local/sbin.
rebootubl.sh: #!/bin/bash /sbin/iptables -I INPUT 1 -s 154.0.0.1 -j ACCEPT -m comment --comment "netman" /sbin/iptables -I INPUT 1 -p udp -m udp -s 102.102.102.248/29 --dport 161 -j ACCEPT -m comment --comment "netman" actual='who -b' /usr/bin/curl --silent -u """x.token"":" -d type="note" -d body="Reboot detected @ $actual" -d title="Reboot: Splashy Fen - FBSA" 'https://api.pushbullet.com/v2/pushes'
where x.token is the Pushbellet access token. The other commands whitelist management plane systems.
All that remains now is to execute the script and boot time. Use sudo crontab -e
# # m h dom mon dow command @reboot sleep 180 && /usr/local/sbin/rebootubl.sh
The 180 seconds delay is to ensure all WAN links startup successfully.
