Ali port 9000,50070 hadoop cloud server can not access problems

After starting the 9000 port is not occupied hadoop found very strange
view the port command
netstat -tpnl
found 9000 and 50070 are they not occupied, but did start up hadoop
reasons: Ali cloud server has a public network and private network ip ip, between two nodes communication through the public network ip, ip address configure the port number to use the network.

core-site.xml modified master network or ip address

hdfs-site.xml modified master or network address ip