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2019-08-28 03:11:37 -0500 answered a question Remote multimaster_discovery_fkie

If you run master_discovery on machine2 your ROS_MASTER_URI should be set to machine2, or the hostname set in ROS_MASTER

2017-01-24 06:25:09 -0500 commented question Multimaster_discovery (multimaster_fkie package) not recognizing other master nodes in multi-roscore system

you can try to run "rosrun master_discovery_fkie master_discovery _log_level:=DEBUG". Run twice to see more output. You can also try with "_send_mcast:=False" to see at least itself, only with current version from github. Or try with "_robot_hosts:=[comp_host]"

2017-01-23 05:49:10 -0500 commented question Multimaster_discovery (multimaster_fkie package) not recognizing other master nodes in multi-roscore system

can you test master_discovery with default values and if it works, try to change ROS_HOSTNAME and ROS_IP.

2017-01-23 05:46:46 -0500 commented question Multimaster_discovery (multimaster_fkie package) not recognizing other master nodes in multi-roscore system

something is going wrong with multicast communication on the selected interface. Normally the master_discovery should receive own hearbeat messages and add itself to the list. This does not happen. This is the reason, why I asked to try it with localhost.

2017-01-22 03:53:44 -0500 commented question Multimaster_discovery (multimaster_fkie package) not recognizing other master nodes in multi-roscore system

Hi, did you tested it without setting ROS_HOSTNAME and ROS_IP?