Wednesday, March 04, 2026

Re: Immutable root on OpenBSD? (New to BSD)

On 04/03/2026 01:28, Crystal Kolipe wrote:
> On Tue, Mar 03, 2026 at 11:16:52PM +0000, Pattled Buquor wrote:
>>>> Does anyone here have some advice/idea/experience on how to do
>>>> immutable systems with OpenBSD?
>>> If you're new to OpenBSD, it would be much better to get some
>>> experience with a 'regular' installation first.
>> Ok, I think you're right. I didn't realize how BSD is different from
>> Linux, so I'll try to get used to it before doing anything more
>> advanced.
>>
>>> Essentially everything you are asking about is _possible_
>> But still, if you have some tracks, even if it requires advanced
>> knowledge, don't hesitate to share them, so I can use them later,
>> once I'm ready.
> If you want a quick taste of how it might work in practice, maybe have a look
> at the FuguIta live CD image.
>
I second that.

Things that haven't been mentioned but answer some of your questions:

immutability: https://man.openbsd.org/chflags

monitoring system files: https://man.openbsd.org/mtree

Don't use chflags on a production system without testing exactly how you
manage system updates, it will come back to bite you.

Cheers,

Noth

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