Is this error message from before or after you set ROS_HOSTNAME? The
error message implies that ROS_HOSTNAME is not set, as it is using the
'robot' hostname instead.

Can you try:

export ROS_MASTER_URI=http://localhost:11311
export ROS_HOSTNAME=localhost
roscore


 ... and see if you get the same error message?

 - Ken

On Sat, Mar 20, 2010 at 11:31 PM, wwjjbb1977 <wwjjbb1977@gmail.com> wrote:
>
> I am  new  here.
> I   install a  ros into  my computer (OS is fedora11) .
>    When  i  run roscore ,i get this message .
>
>
> ... logging to
> /root/.ros/log/d2c97a1a-3563-11df-8e96-001bb9806e0a/roslaunch-robot-9093.log
>
> Unable to contact my own XML-RPC server, this is a highly unusual error and
> should be reported immediately.
> My URI is [http://robot:38228/]
>   I
> my compute's name  is "robot".
> I have changed  the ROS_HOSTNAME=localhost
>
> thanks for anyone'help
>
>
> --
> View this message in context: http://n3.nabble.com/roscore-problom-I-need-help-tp465070p465070.html
> Sent from the ROS-Users mailing list archive at Nabble.com.
>
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