Everything else starting on Hadoop pseudo-distributed except namenode - hadoop

Question

I have Hadoop 2.9.0 on Ubuntu at
/usr/local/hadoop
But when I try start-dfs.sh
No error is shown while starting namenode
But when I type jps, only
10900 SecondaryNameNode
11047 Jps
10696 DataNode
Seams to have started, not namenode
Things tried:
=> Removed temp files and formatted namenode hadoop namenode -format
terminal:
blaze#blazian:/tmp$ start-dfs.sh
Starting namenodes on [localhost]
blaze#localhost's password:
localhost: starting namenode, logging to /usr/local/hadoop/logs/hadoop-blaze-namenode-blazian.out
blaze#localhost's password:
localhost: starting datanode, logging to /usr/local/hadoop/logs/hadoop-blaze-datanode-blazian.out
Starting secondary namenodes [0.0.0.0]
blaze#0.0.0.0's password:
0.0.0.0: starting secondarynamenode, logging to /usr/local/hadoop/logs/hadoop-blaze-secondarynamenode-blazian.out
blaze#blazian:/tmp$ jps
10900 SecondaryNameNode
11047 Jps
10696 DataNode

Answer 1

You don't have a SSH setup with localhost. Please follow these steps and you'll be able to run the namenode.
Go to your system terminal and type:
cd(It will redirect you to ~)
ssh-keygen(hit enter three times and it will create a .ssh directory in ~)
cat id_rsa.pub >> authorized_keys(it will make sure that your localhost is the trusted source and give permission to make
passwordless ssh.)
Then simply run start-all.sh and you're all set.