04.26 linux command operation

If you can see 5 nodes, you are right. Enter
in the browser: python2:50070
If you can't access it:
view the current

netstat -ant | grep 50070

You can see that the address is 127.0.0.1, which should be the local 192.168.XX.XX

namenode source data

datanode data

secondary Namenode replica

stop-all.sh 

start-all.sh