Installation of ROS gazebo related packages

gazebo Install itself ：
sudo apt install gazebo[version] I install 11 edition

As long as you install this, you can meet most requirements
sudo apt install ros-foxy-gazebo-ros-pkgs

Others gazebo Package problem ：
After installing the top , It may also appear as Failed to load plugin libgazebo_ros_camera.so: The error of
This package is not installed , It should be that I didn't find it
Try recompiling again source once bash

in addition ：
If gazebo Abnormal shutdown , It may not open next time
You need to perform ：killall gzserver