CODEWITHSUNDEEP
linuxnode.jshadoop
Tak
Tak

Reputation: 3616

Transition from single node to multi node hadoop same

I've followed the hadoop single node installation steps from this link . And now following this link to connect them to make a multi-node cluster. I'm in the beginning of the steps and I just have a question, both my machines have the same username userA and they have a second hduser. How can I rename userA to make it named master on one machine and slave on the other?

Also I connected them with a wired cable, so they are on the same network, but I wonder how do I do this configure the network interfaces to use a common network such as 192.168.0.x/24. as I'm not good in networking.

So if anyone could please advise.

Upvotes: 2

Views: 449

Answers (1)

Lauri Peltonen
Lauri Peltonen

Reputation: 1542

By usernames do you mean users within the machines? Or do you mean server names? The servers can be named anything you like, and users within the server don't make much difference - just run the installation and configurations by using the same user within one machine. If your master server is called machineA, then just use name machineA in your configurations instead of master.

Also, I recommend to use the newest hadoop version (you didn't specify which version you're using). With the newest version (2.5.1) the linked instructions are not valid - they are for older Hadoop versions. The link's overall picture is good, but for specific instructions I recommend something else, for example http://www.alexjf.net/blog/distributed-systems/hadoop-yarn-installation-definitive-guide/

As for the networking issue, all they need is to be able to SSH to each other without passwords. Doesn't matter where&how they are located.

Upvotes: 1

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