Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

Roscore on virtual machine

asked 2016-03-01 14:34:52 -0500

mielto
1 ●1 ●2 ●1

Hi, I'm trying to run roscore on virtual machine in cloud and connect robots to it. I have installed ros on vm. I have a openvpn server running as well, so robots could communicate with cloud and vice versa. On my robot I have openvpn client running.

Lets say my IP on vm is: 1.1.1.1 and virtual network ip is 2.2.2.2

On robot ip: 3.3.3.3 and virtual network ip 4.4.4.4

On vm: openvpn server running, roscore running, I used export ROS_HOSTNAME=2.2.2.2

On robot: openvpn client running, I used export ROS_MASTER_URI=http://mycloud.cloudapp.net:11311 and export ROS_HOSTNAME=4.4.4.4

And I get the error "Unable to communicate with master" on my robot.

Can anyone help me with this issue.Thank you very much

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2016-03-01 19:59:33 -0500

Arowana
381 ●9 ●12 ●19

It looks like your ROS_MASTER_URI is using a domain name, which might be linked to the public IP. You might want to try ROS_MASTER_URI=http://4.4.4.4:11311 The VM and your robot should use the same IP and ports. Otherwise you are not trying to connect to the same rosmaster.

You want to run your master in the cloud so all IPs should be 4.4.4.4 you should have then on your VM ROS_HOSTNAME=4.4.4.4

edit flag offensive delete link

add a comment

Question Tools

Stats

Asked: 2016-03-01 14:34:52 -0500

Seen: 1,927 times

Last updated: Mar 01 '16

Roscore on virtual machine edit

1 Answer

Question Tools

Stats

Related questions

Roscore on virtual machine