UDM / UDMPro Boot Script

Features

Allows you to run a shell script at S95 anytime your UDM starts / reboots

All files described here are in the examples folder, automation is coming soon.

Compatiblity

Should work on any UDM/UDMPro after 1.6.3
Tested and confirmed on 1.6.6, 1.7.0, 1.7.2rc4

Steps

1. Make your script on the UDM/UDMPRO

vi /mnt/data/on_boot.sh 
chmod u+x /mnt/data/on_boot.sh

Example: see examples/udm-files/on_boot.sh

#!/bin/sh
podman start wpa_supplicant-udmpro

iptables -t nat -C PREROUTING -p udp ! --source 10.0.0.x ! --destination 10.0.0.x --dport 53 -j DNAT --to 10.0.0.x || iptables -t nat -A PREROUTING -p udp ! --source 10.0.0.x ! --destination 10.0.0.x --dport 53 -j DNAT --to 10.0.0.x
iptables -t nat -C PREROUTING -p tcp ! --source 10.0.0.x ! --destination 10.0.0.x --dport 53 -j DNAT --to 10.0.0.x || iptables -t nat -A PREROUTING -p tcp ! --source 10.0.0.x ! --destination 10.0.0.x --dport 53 -j DNAT --to 10.0.0.x
iptables -t nat -C POSTROUTING -j MASQUERADE || iptables -t nat -A POSTROUTING -j MASQUERADE

2. Make the unifios docker container execute this script on startup, this has to be done after every firmware update. It does persist through reboots.

##Automatic

Copy install.sh and install-unifios.sh to your UDM
Execute install.sh

Manual

podman exec -it unifi-os sh

make a script that sshs to the udm and runs on our boot script

Example: examples/unifi-os-files/udm.sh

echo "#!/bin/sh
ssh -o StrictHostKeyChecking=no root@127.0.1.1 '/mnt/data/on_boot.sh'" > /etc/init.d/udm.sh # 127.0.1.1 always points to the UDM

make said script executable

chmod u+x /etc/init.d/udm.sh

make a service that runs on startup, after we have networking

Example: examples/unifi-os-files/udmboot.service

echo "[Unit]
Description=Run On Startup UDM

[Service]
After=network.target
ExecStart=/etc/init.d/udm.sh

[Install]
WantedBy=multi-user.target" > /etc/systemd/system/udmboot.service

enable it and test

systemctl enable udmboot
systemctl start udmboot

back to the udm

exit

reboot your udm/udmpro and make sure it worked

reboot
exit

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