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Udpate doc to match comments in issue

added description on how configure the timezone from Butane / Ignition on Flatcar

How to use

read flatcar/Flatcar#1836 (comment)

first draft adding

- timezone 
- sync timezone with host
- remarks to old config style
@PackElend PackElend requested a review from a team as a code owner October 8, 2025 19:02
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Thanks and sorry for the delay here, I added some comments. :)

- path: /etc/localtime
target: ../usr/share/zoneinfo/America/New_York
```
`"overwrite": true`
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What' s the intention here?

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I assume this is necessary if a default time zone has already been set.
I'm not sure exactly, as I use existing examples as templates.

Comment on lines +90 to +97
<details>

<summary>Remark to other references </summary>

If you come accross https://github.com/flatcar/Flatcar/issues/491#issuecomment-908316042 and wondering whether you have to use the fields `"overwrite": true` and `"filesystem": "root"` unlike in Fedora Core OS?
Here is the ansser: https://github.com/flatcar/Flatcar/issues/1836#issuecomment-3175310460

</details>
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This whole thing can be dropped. FCOS is not using Ignition 2 since years now, so no need to mention the overwrite: true / `filesystem: root" difference.

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That's how the journey began.

If you start googling (or asking AI), you get a mix of old and up-to-date answers.
It's difficult to know if the things in the old examples are still needed or omitted due to other reasons, such as a slight difference in configuration.

I want to clarify things here. It always helps to give some histroical context for users not follwing a project cloelsys to keep track of such hchanges

PackElend and others added 5 commits December 28, 2025 23:15
…imezone.md


Correcting a spelling mistake.

Co-authored-by: Mathieu Tortuyaux <[email protected]>
…imezone.md


Correcting bad copy from FCOS

Co-authored-by: Mathieu Tortuyaux <[email protected]>
…imezone.md


Correcting a spelling mistake.

Co-authored-by: Mathieu Tortuyaux <[email protected]>
…imezone.md


Correcting missing ":"

Co-authored-by: Mathieu Tortuyaux <[email protected]>
…imezone.md


Correcting wrong language identifier

Co-authored-by: Mathieu Tortuyaux <[email protected]>
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2 participants