Question

I have installed Hadoop on Ubuntu but name node is not running

Comments

Hi,

What command did you ran to see that the other nodes are running or not?

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Did you start the services after you installed Hadoop? To start the services go to the bin folder inside the hadoop and run the below command:

$ ./start-all.sh

Answer 1

If you are using Hadoop version-2.7.7, then I would like to suggest one more solution.

Run the command 

hadoop namenode -format

Once the namenode is formatted, go to Hadoop-2.7.7/sbin directory and start all daemon with the command​

/start-all.sh

After this, check that all your Hadoop daemons are running or not, with this command 

 jps

I hope it will help.