Re: openmosixview+ssh and /tmp/nodes.tmp

Hi Javier,

On Freitag 20 Juni 2003 18:42, Jose Javier Forment Millet wrote:
> Hi all,...
>
> I have some questions arising from my inexperience about openmosixview+SSH
> :
>
> How necessary for openmosixView is to have root-SSH-without-password? I
> mean, what does openmosixview use root-SSH-without-password for? I have a

all administration commands executed by openMosixview are either executed
by "rsh" or "ssh" dependented on the configuration.
(you can set this config in the "config" menu of openMosixview, be sure
to save the config)

> six-node cluster. We only logon to the masternode, and, accordingly,
> openmosixview is only installed on it. Do I really need
> root-SSH-without-password?

i assume that all openMosixview application are executed as "root" only
because only "root" can is able to adjust the global cluster configuration.
I would suggest that you enable passwordless "rsh" or "ssh" to all
the cluster-nodes (from the Masterserver) for any user (including root).
Then just cp the "openMosixprocs" binary to all of the node (to /usr/bin)
and enjoy the openMosix adminstration+monitoring suite with the full
functionality.

>
> Another question is related to the /tmp/nodes.tmp file: When one of my
> system users runs openmosixview, it creates the file /tmp/nodes.tmp, owned
> by him/herself. Then, if another user tries to run openmosixview, he/she
> gets error messages ("/tmp/nodes.tmp: Permission denied"), and the
> openmosixview graphical displays opens up, but displaying wrong legends at
> the buttons where the nodes IPs must be displayed. The only way of having
> the correct IPs is deleting the other user's /tmp/nodes.tmp file. So only
> one user can have a correct display.

will be fixed in the next version. All used tmp files will be unlinked or
a diffrent mechanism will be used ;) soon come.

>
> Also, I cannot run openmosixview as root, since I get the following error:
>
> -------------------------------------------
> Xlib: connection to ":0:0" refused by server
> Xlib: No protocol specified

here howto fix it.
on your workstation :
  xhost +
on the remote workstation:
  export DISPLAY=yourworkstationname:0.0
then i will work.


>
> openmosixview: cannot connect to X server :0
> -----------------------------------------------
>
> It is clear I'm a newbie... Any help will be greatly appreciated. Thanks in
> advance,

hope it helps a bit
please come back if you have more questions.

>
> Javier.
>
>
> ---------------------------------------------------------------
> Javier Forment
> Instituto de Biologia Molecular y Celular de Plantas (UPV-CSIC)
> Avenida de los Naranjos, s/n
> 46022 Valencia (Spain)
> Tlf: +34-963877885
> Fax: +34-963877859
> e-mail: [email protected]
> ---------------------------------------------------------------
<snip>

happy clustering,

Matt
-- 
E-mail	:  [email protected]
www	: http://www.openmosixview.com
an openMosix-cluster management GUI

The sky is not the limit, the ground is.



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