[one-users] Set root password in VM

[Jaime Melis]

Hi Giancarlo,

what image are you using? what context packages are you using?

As you might already know, contextualization in OpenNebula works by
creating a CDROM image with all the metadata and attaching it to the
Virtual Machine. The VM must have init scripts that open that CDROM image,
process the data and apply the changes.

Currently the packages provided  by the OpenNebula project don't modify
root's password for security reasons, just like Olivier said, it's better
to use ssh public key authentication.

However if you definitely want to set the root password you can do the
following (assuming you're using our contextualization packages) If you
provide a 'init.sh' script it will be executed right at the very end of the
boot sequence, therefore you can create a script that sets the password,
call it 'init.sh' and include it in the VM:

Step 1:
$ cat init.sh
#!/bin/bash
[ -n "$ROOT_PASSWORD" ] && usermod -p "$ROOT_PASSWORD" root

Step 2:
In sunstone, register a new File in the "Files & Kernels" tab, select Type
= CONTEXT and call it 'init.sh' and point to the file

Step 3:
Update your template to include that file:
Template -> More -> Update -> Context -> Files -> Click Refresh -> Click
'init.sh' -> Click 'Update'

Step 4:
Create a password in 'crypt' format, for example by doing:
echo -n 'mypassword'|openssl passwd -1 -stdin => <crypt password>

Add the ROOT_PASSWORD to the Template
Template -> More -> Update -> Context -> Custom Variables -> add
ROOT_PASSWORD using the value obtained above as the value.

cheers,
Jaime



On Mon, Nov 18, 2013 at 5:26 PM, Giancarlo De Filippis
<gdefilippis at ltbl.it>wrote:

>  Il 18/11/2013 15:25 Giancarlo De Filippis ha scritto:
>
> Hi all,
>
> i've build my first vm with centos 6.4 image.
>
> How i can setup the root password in vm?
>
> Thanks..
>
>
> --
>
> *Giancarlo De Filippis*
> LTBL S.r.L.
> Cell. +39 320 8155325
> Uff.  +39 02 89604424
> Fax  +39 02 89954500
> __________________
>
>
> --
>
> *Giancarlo De Filippis*
> LTBL S.r.L.
> Cell. +39 320 8155325
> Uff.  +39 02 89604424
> Fax  +39 02 89954500
> __________________
>
>
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>


-- 
Jaime Melis
Project Engineer
OpenNebula - Flexible Enterprise Cloud Made Simple
www.OpenNebula.org | jmelis at opennebula.org
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