Is it possible to setup read-only root ?

[John Wendel]

On 07/01/2012 10:11 AM, Reindl Harald wrote:
>
> Am 01.07.2012 19:08, schrieb Joe Zeff:
>> On 07/01/2012 10:01 AM, John Wendel wrote:
>>> Is it possible to setup Fedora, using Fedora provided tools/software,
>>> with a read-only root partition?
>>>
>>> There's an ancient wiki entry from the FC6 days that indicates that some
>>> work was done, but I would assume that this depended on the SysV init
>>> system. I've haven't seen any mention of read-only root setup with systemd.
>>>
>>> Any clues would be greatly appreciated.
>>>
>> If I'm not mistaken, /var needs to be on that partition and needs to be writable.
> it is not uncommon to have /var on a own partition
>
>> If so, then you can't have a
>> read-only root partition.
> it works, but be really carefull
>
>> And, just so we all know where we're going here, why would you want to?
> in theory more security
>
> imagine a root-exploit changing a system binary
> much more difficult if the rootfs is readonly
>
>
>
Extra security is certainly a plus. My main reason for wanting to run a 
read-only root it to avoid wearing out the consumer grade compact flash 
card that I'm using as my root device (yes, I'm cheap).

Regards,

John


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