After using the remote control of the working machine, problems occurred in the use of the local ROS, and the roscore did not respond

1. Set stand-alone mode

export ROS_HOSTNAME=localhost
export ROS_MASTER_URI=http://localhost:11311

2. Look for local ip

The instructions are as follows

ip a

3. modify .bashrc file

open bashrc

sudo gedit ~/.bashrc

modify , preservation

export ROS_HOSTNAME=111.11.1.1（ Hypothetical ip）
export ROS_MASTER_URI=http://111.11.1.1:11311

to update

source ~/.bashrc

summary

After remote control , Remember to change to stand-alone mode locally , Otherwise ros Not working properly