Re: Is it possible to setup read-only root ?

[John Wendel <jwendel10@xxxxxxxxxxx>]

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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