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I've just started renting a new Debian Lenny server, but /dev/random is missing. However I can see /dev/urandom. Why might this be missing, and how can I create it?

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1  
Real physical server? OpenVZ container? Other virtualization? –  andol Jul 7 '10 at 9:05
    
@andol: Wondering the same, I have seen these devices not exist in openvz before. –  Kyle Brandt Jul 7 '10 at 11:55
    
Xen, apparently: xtrahost.co.uk/xenvps –  nbolton Jul 7 '10 at 18:31

3 Answers 3

I've never seen a Linux system without /dev/random. It should always be present (and in fact some servers rely on it). Just bug your provider about it, they need to fix it.

As to creating it yourself:

Normally it should be created by udev on bootup. If you don't use udev, you can create it yourself using MAKEDEV. But you should probably fix the root cause.

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This is a failure which sometimes happens with an update or a new installation. This should be fixed by your provider!! Tell him maybe he will do a new installation

Here is the right command to create the Random Device for yourself:

mknod /dev/random c 1 9

But you should tell it to your provider!

Here is another link that describes the problem: http://markus.revti.com/2007/12/creating-devrandom/

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up vote 0 down vote accepted

apt-get install udev

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