How to enable Namenode HA using Ambari?

[#1]

Hi,

Is there any way of enabling Namenode HA using Ambari?

[#2]

@Rushikesh Deshmukh

See this http://docs.hortonworks.com/HDPDocuments/Ambari-2.1.0.0/bk_Ambari_Users_Guide/content/_how_to_config...

Amabri 2.1.0 but its not different from 2.2

[#3]

@Rushikesh Deshmukh

You can use this too for NN and RM + more

http://docs.hortonworks.com/HDPDocuments/Ambari-2.2.0.0/bk_Ambari_Users_Guide/content/ch_managing_se...

[#4]

@Neeraj Sabharwal, thanks for quick reply.

[#5]

@Neeraj Sabharwal, thanks for shairing link got required information.

[#6]

@Neeraj Sabharwal, thanks for sharing this link.

[#7]

So, I used the docs you listed to enable HA, however, it doesn't mention how/when to leave SafeMode. I assume its after step 16, but it really should state that in the documenation.

[#8 · Accepted solution]

@Rushikesh Deshmukh I see that you have some good questions.

I highly recommend to spend sometime on http://docs.hortonworks.com

Get Familiar with Doc tree

HDP docs , Ambari docs then you can see docs on other features

If you want to learn about every component then best location is http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.4/bk_installing_manually_book/content/ch_getti...

Ambari Admin and User guide can help you a lot to learn and it will give most of the answers there.