If it's anything like my setup it'd be the
swordfish/unix:11 MIT-MAGIC-COOKIE-1 00607ba4fc7c6a2ea9debc6ad5776376
so the xauth line run as root would be
xauth add . 00607ba4fc7c6a2ea9debc6ad5776376
afaik, there's no way to make it permanent since it's regenerated when you
ssh in. There's nothing to prevent you from setting up a simple shell
script in your profile to do some wonkiness, but you'd be passing that hash
around.
I'm making the assumption you're doing ssh forwarding and not popping the
old X listen ports.
On Wed, Apr 18, 2018 at 6:18 PM, Mark Phillips <
mark@phillipsmarketing.biz>
wrote:
> Great!
>
> I have this so far:
>
> mark@swordfish:~$ echo $DISPLAY
> swordfish:11.0
> mark@swordfish:~$ xauth list
> swordfish/unix:11 MIT-MAGIC-COOKIE-1 00607ba4fc7c6a2ea9debc6ad5776376
> swordfish/unix:10 MIT-MAGIC-COOKIE-1 892fa0c2d392d8517dd525a7bcdc212b
> swordfish.phillipsoasis.com:1 MIT-MAGIC-COOKIE-1
> ce767df80405a8d280be4e258f06fed8
> swordfish/unix:1 MIT-MAGIC-COOKIE-1 ce767df80405a8d280be4e258f06fed8
> swordfish.phillipsoasis.com:10 MIT-MAGIC-COOKIE-1
> d635d049952882222e1b238f7a8d1fbd
> swordfish.phillipsoasis.com:11 MIT-MAGIC-COOKIE-1
> cdb5f42e697aed89f9ff934ae36df625
>
> So, which magic cookie goes with $DISPLAY=swordfish:11.0?
>
> Also, how do I make this permanent? Or, do I have to export the DISPLAY
> and copy the magic cookie every time I su to root?
>
> Mark
>
> On Wed, Apr 18, 2018 at 5:31 PM, James Mcphee <jmcphe@gmail.com> wrote:
>
>> ok. So you start on box1, ssh -X to box2. echo $DISPLAY. xauth list.
>> su to user2 on box2. export DISPLAY=<the display from user1>. xauth add
>> $DISPLAY . <the hash from the correct display from xauth list>. Launch X
>> application.
>>
>>
>>
>> On Wed, Apr 18, 2018 at 5:21 PM, Mark Phillips <
>> mark@phillipsmarketing.biz> wrote:
>>
>>> There is an application I need to run as root on my Linode server, but
>>> it has to run in a gui.
>>>
>>> I have ssh and X11 forwarding set up between my Ubuntu 14.04 system and
>>> my Linode (swordfish). It works just great for a non-root user (xcalc,
>>> xconsole, the application I need to run, etc). However, when I try to run
>>> the application on the server as root, I get the error message "X11
>>> connection rejected because of wrong authentication." For xcalc running as
>>> root, I get
>>> X11 connection rejected because of wrong authentication.
>>> Error: Can't open display: swordfish:10.0
>>>
>>> I have tried all sorts of google solutions - copying the user's
>>> .Xauthority to /root/ (also changing the ownership and permissions). But I
>>> just can't seem to log into swordfish as a normal user using ssh -X, su to
>>> root, and get the X11 forwarding to work.
>>>
>>> I also went so far as to install vnc4server on the Linode, xfce window
>>> manager, and vnc4viewer on my Ubuntu machine. That all works when I access
>>> the vnc server as a normal user, but I can't get any X11 apps to run as
>>> root (ie from a root command line in a terminal in the vnc window). The
>>> error message when I try to run xcalc or other X11 apps is "No protocol
>>> specified. Can't open display :1".
>>>
>>> What are the special Linux guru magical incantations/spells to make X11
>>> forwarding work for root?
>>>
>>> Thanks!
>>>
>>> Mark
>>>
>>>
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>>>
>>
>>
>>
>> --
>> James McPhee
>> jmcphe@gmail.com
>>
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>>
>
>
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--
James McPhee
jmcphe@gmail.com
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