Simple bash script to update server OS, FluxOS and postpone reboot (if needed after updates) if node is not in maintenance window or queue window Using Crontab for autoupdates
It gets the node information using the flux-cli getinfo command, which is used to check if the node is running
It calculates the number of blocks for maintenance window. Will not update within 20 minutes of maintenance window closing, delays update until after maintenace window opens up.
It calculates the node queue window based on the current rank compared to highest rank in tier. Will only update within 2 days (1440 spots) from highest rank in tier. **Thanks @Professor Chaos
It updates the package list using the sudo apt update command and then checks for available updates using the apt list --upgradable command
If updates are available, it upgrades the packages using the sudo apt upgrade -y command
It checks if a reboot is required
If a reboot is required, it checks if the node status is "CONFIRMED" and if the maintenance window is open (i.e. if the number of blocks until maintenance is less than or equal to 20) and if so, it schedules a reboot after a delay of 20 minutes plus the number of minutes until maintenance
If a reboot is not required, it exits the script
It updates the FluxOS node software pulling from the official repo using command cd $HOME/zelflux && git checkout . && git checkout master && git reset --hard origin/master && git pull
Login to the server with the same user as the node (home directory where the flux node is installed) using ssh
download the script
wget https://raw.githubusercontent.com/mike8643/fluxnode---system-auto-update/main/autoupdate_system.sh
copy and paste command below to set the exec permission to the script , create log file and setup crontab
chmod +x autoupdate_system.sh && mkdir crontab_logs && touch crontab_logs/autouptade_os.log && crontab -l | sed "\$a0 23 * * * /home/$USER/autoupdate_system.sh >> /home/$USER/crontab_logs/autouptade_os.log 2>&1" | crontab -
the Crontab is set to execute script everyday at 6pm EST (2300 UTC). You can change the daily reoccuring time to whatever you want by modifying 23 in the above script to any hour in UTC you want.
Logs directory /home/$USER/crontab_logs/autouptade_os.log