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30 lines
1.4 KiB
Markdown
30 lines
1.4 KiB
Markdown
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# Persist changes
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Do you want to make some custom changes to your UDM which Unifi hasn't released yet?
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Would you like to make some changes that on EdgeOS would be achieved with config.something.yml?
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If you just make changes to the interfaces, Unifi will overwrite what you've done periodically/next time you change something.
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Luckily we can hook into Unifi's state file and perform the updates immediately afterwards.
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For example, [configuring two IP addresses on your WAN interface, so that you can get to your modem's configuration](https://community.ui.com/questions/Access-modem-connected-to-USG/db5986b8-26cb-4d66-a332-2ace81ac8c4f#answer/7da28d8d-25c8-4ca3-b455-c6eba836f034).
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## Installation
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1. [Enable on-boot-script](https://github.com/unifi-utilities/unifios-utilities/blob/main/on-boot-script/README.md)
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1. Copy `42-watch-for-changes.sh` to `/mnt/data/on_boot.d/`
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* Check the `FILE` variable, it should point to a file that exists, it might be in `/data` or in `/mnt/data`
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1. Copy `on-state-change.sh` to `/mnt/data/scripts/`
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1. Edit `/mnt/data/scripts/on-state-change.sh` to your heart's content
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> Make sure that your script doesn't error in the likely case that it tries to execute an update which has already been made
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## Example: configuring two IP addresses on your WAN interface
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`/mnt/data/scripts/on-state-change.sh`
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```
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#!/bin/sh
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# give port9 this IP, allows access to router web interface
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ip addr add 192.168.0.2/24 dev eth8 || true
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```
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