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Hi, I have ros indigo running through docker and when i try to run rostopic list on a new terminal with roscore open in another, I get "ERROR: Unable to communicate with master!" I don't really have experience with any of this but both of these terminals are on the same laptop so I'm unsure as to what the problem could be or what to do,
I was able to fix this by typing ip addr and noting the ip address of the machine I was using.
After finding the IP, edit the /etc/hosts file with that IP and your hostname, which can be found in the /etc/hostname file.
(I had to add 127.17.0.2 9fc279ddb197 to my hosts file)
Actually I exited from my docker container, logged back in, and it is working now. I have two terminals, on my laptop: ter1 in which the ROS application is running and ter2 in which I can do rostopic list and see all the topics. I have in my /etc/hosts file what @Mabecr suggested.
Asked: 2017-02-09 13:07:14 -0500
Seen: 1,825 times
Last updated: Feb 09 '17
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