some troubleshooting methods at the beginning, FYI

[TowerLeon]

1. stop and disable firewalld while creating new virtual machines.

[root@localhost data]# sudo systemctl stop firewalld [root@localhost data]# sudo systemctl disable firewalld

2. create mysql users and databases as required. CREATE DATABASE 'sysbase'; CREATE USER 'sysbase'@localhost IDENTIFIED BY 'SttA35BBx5dbl1xB7NS7'; GRANT ALL PRIVILEGES ON . TO 'sysbase'@localhost IDENTIFIED BY 'SttA35BBx5dbl1xB7NS7'; FLUSH PRIVILEGES;

3. change host as required. window.CONFIG = { apiHost: 'http://localhost:8081/', perPage: 20, }