Only one Node in Active Stat ??

[#1]

Hi, I have a cluster with 4 nodes (NameNode: 8Gb RAM, 3 Data nodes with 4GB RAM).

In the Ressource Manager UI i'm getting only one Active Node:

Is this Normal ?

Thanks.

[#2 · Accepted solution]

@Zaher Mahdhi

You have to check on how many node Node Mangers are installed, the info can be checked on Ambari Dashboard -> YARN

I assume it is one and that is the reason you see only one Active Node

[#3]

Yep, Only one .. Can I add new ones ?

[#4]

Okay, I installed the NodeManger on the 3 remaining nodes and I have now all the nodes active.