fkie/multimaster_fkie

Rostopic hz show no messages.

OoooL19 opened this issue · 2 comments

OoooL19 commented

Hi after I ran the launch file, I can see the rostopic list but the rostopic list shows no messages. I have checked all the ros_master and ros_ip. I am not sure what cause the problem.
image

atiderko commented

Hi

the hostname cpr-a200-0630 can not be resolved on the machine you show the screenshot.
The master_sync register the all the topics, but ROS can't establish a connection between publisher and subscriber because he can't resolve the hostname.

You have two options:

  1. add cpr-a200-0630 to /etc/hosts
    or
  2. set ROS_IP on cpr-a200-0630 before launch ros stuff
OoooL19 commented

Hi

the hostname cpr-a200-0630 can not be resolved on the machine you show the screenshot. The master_sync register the all the topics, but ROS can't establish a connection between publisher and subscriber because he can't resolve the hostname.

You have two options:

  1. add cpr-a200-0630 to /etc/hosts
    or
  2. set ROS_IP on cpr-a200-0630 before launch ros stuff

I think it works now. Thank you for your help.