1. Log in to the big data experiment platform
Enter the experiment (the interface displays master, slave01, slave02), as shown in Figure 6-1.
Figure 1 Experimental environment interface
2. Ensure that each virtual machine can ping the external network
(In the interface in Figure 2-1, master, slave01, and slave02 each correspond to a virtual machine, and are subsequently referred to as "virtual machines on the interface").
2.2.1 Right-click the mouse in a blank area of the desktop
Open a terminal (Figure 2-2 will be slightly different depending on the graphical desktop system used by centos7, generally use gnome or xfce).
Figure 2-2 Desktop right-click mouse interface
2.2.2 Ping network
Ping an external network address on the master, slave01 and slave02 virtual machines respectively to ensure that the ping can be successful. The "ctrl+c" key combination ends the execution of the ping command (the virtual machines provided by the big data laboratory can ping the external network by default) .
Figure 2-3 Master virtual machine ping interface