[ros-users] roslaunch weirdness on PR2 basestation

[Hai Nguyen]

Cool, that seems to work.  Thanks!  I think I understand the
networking setup a little bit better now too...

On Wed, Jul 21, 2010 at 4:56 PM, Jeremy Leibs <leibs at willowgarage.com> wrote:
> Err, I apologize.  I meant:
>
> 10.68.1.1 pr2c1 pr2c1.hsi.gatech.edu
> 10.68.1.2 pr2c2 pr2c2.hsi.gatech.edu
>
> Basically, forcing the addresses to resolve to the VPN addresses for
> the robot that are otherwise already being forwarded to.
>
> On Wed, Jul 21, 2010 at 1:44 PM, Jeremy Leibs <leibs at willowgarage.com> wrote:
>> You could modify the hosts file on the basestation to include:
>>
>> 10.68.0.1 pr2c1 pr2c1.hsi.gatech.edu
>> 10.68.0.2 pr2c2 pr2c2.hsi.gatech.edu
>>
>> On Wed, Jul 21, 2010 at 1:00 PM, Hai Nguyen <haidai at gmail.com> wrote:
>>> That definitely sounds like it would cause this issue.  Is there a way
>>> around so that the base station can perform remote launches on the
>>> robot?
>>>
>>> On Jul 21, 2010, at 1:58 PM, Ken Conley wrote:
>>>
>>>> The implementation of the local machine check is in roslaunch.core:78
>>>> . It looks up the address for the machine name, then compares that
>>>> against the IPs for the local machine.
>>>>
>>>> - Ken
>>>>
>>>> On Tue, Jul 20, 2010 at 2:39 PM, Hai Nguyen <haidai at gmail.com> wrote:
>>>>> Hi,
>>>>>
>>>>> I am unable to launch nodes on the PR2 from the base station but I am
>>>>> able to launch nodes from the base station to any other computers in
>>>>> our lab.  In the sample launch file below, if I change
>>>>> "skynet.hsi.gatech.edu" to "pr2c1.hsi.gatech.edu" then then roslaunch
>>>>> does not even try to ssh to the PR2 to launch (no messages saying
>>>>> "creating ssh connection to some.machine.name" in the console).  Is
>>>>> roslaunch doing some fancy tricks to figure out whether the provided
>>>>> address is on the same machine?  If so, it seems something like that
>>>>> might fail on the base station where some of the "local addresses"
>>>>> are
>>>>> PR2 VPN tunnels.
>>>>>
>>>>> <launch>
>>>>>  <machine name="mymachine" address="skynet.hsi.gatech.edu"   <!--
>>>>> does not work if I change this to pr2c1.hsi.gatech.edu or
>>>>> pr2c2.hsi.gatech.edu -->
>>>>>           ros-root="/opt/ros/cturtle/ros"
>>>>>           ros-package-path="/opt/ros/cturtle/stacks:/u/haidai/svn/
>>>>> wg-ros-pkg:/u/haidai/svn/gt-ros-pkg"
>>>>> />
>>>>>
>>>>>  <node name="r_posture" pkg="teleop_controllers" type="posture.py"
>>>>> args="r_cart elbowupr" machine="mymachine"/>
>>>>>  <node name="l_posture" pkg="teleop_controllers" type="posture.py"
>>>>> args="l_cart elbowupl" machine="mymachine"/>
>>>>> </launch>
>>>>>
>>>>>
>>>>> --
>>>>> Hai Nguyen
>>>>> CS, Robotics
>>>>> _______________________________________________
>>>>> ros-users mailing list
>>>>> ros-users at code.ros.org
>>>>> https://code.ros.org/mailman/listinfo/ros-users
>>>>>
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>>
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-- 
Hai Nguyen
CS, Robotics