Requirements: open docker to run mysql on centos, open docker to run tomcat on ubuntu
Require tomcat to use mysql
Two virtual machines, installed centos and ubuntu respectively
Use ifconfig to modify ip: ifconfig ens33 10.151.134.163
If you hit this way, the default netmask will be set, but I didn’t find it.
Later, you have to restart the network card and reset it to have an effect (ifconfig ens33 down, ifconfig ens33 up, ifconfig ens33 10.151.134.163 netmask 255.255.255.0)
By the way, add route route add -net 10.151.134.0 netmask 255.255.255.0 gw 10.151.134.2 or route add defalut gw 10.151.134.2 add default gateway
There is also ping, but telnet shows no route to host. After checking for a long time, it is found that the firewall of centos is not turned on: firewall-cmd --list-port Check the port, firewall-cmd --zone=public --add -port xxxx add firewall (if you want to open it permanently, you can add --permanent parameter)
Worked for an hour, it could be done in ten minutes, to prevent stepping on the pit, record it