Recently at home have 3 VMware virtual machine, set the hadoop cluster, and spark doing data analysis that has met some problems, for example:
1. Three cluster nodes (a, b, c) of a node to connect mysql and create a test database inside creates a test01 table, but the other nodes cannot access the database, consult the great god how to solve this problem?
2. The above problems, I create the test database, and built test01 table, but when I connect to the database with Navicat tools to see but can't find the new database and table (I am sure I built libraries and table no problem, a node can view), I checked the online information is permission problems (I three nodes are root access), but I'm not sure how to operate? Kindly inform
3. My virtual machine time always slower than real time running, every day should be slow for a few minutes, how do I sync of real time