auto-update systemd service and timer

[DerVerruckteFuchs]

I noticed that a crontab entry for auto-updates is being used in the Node Setup Guide. I made my own systemd service and timer, which I tested and found works out pretty well. If added to the guide, this will give users the option either to use a systemd service/timer, or a crontab entry if they wish.

algorand-update.service file:

[Unit]
Description=auto-update algorand software

[Service]
Type=oneshot
User=algorand-user
StandardOutput=file:/home/user/node/update.log
StandardError=file:/home/user/node/update.log
ExecStart=/home/user/node/update.sh -d /home/user/node/data

algorand-update.timer file:

[Unit]
Description=auto-update algorand software every hour

[Timer]
# Run hourly
OnCalendar=*-*-* *:00:00
Persistent=true
Unit=algorand-update.service

[Install]
WantedBy=timers.target

edit:

Since systemd services are run as root by default, when an update occurs root will then have ownership of the algorand node folder. If the user running a node isn't root, then the node won't get run since the user no longer has permissions to access the necessary directories/files. Specifying the desired user in the systemd service prevents this issue.

[brishtiteveja]

I experienced this same issue. Thanks for pointing out.