CODEWITHSUNDEEP
amazon-ec2elasticsearch
aressidi
aressidi

Reputation: 680

Getting two EC2 instances in the same security group to communicate

I'm new to EC2 and I'm trying to setup an elasticsearch cluster. So far, I've been having trouble with discovery, so I want to get to the root problem by understanding how to telnet between two EC2 instances. 

9300         sg-3bc28e0b (elastic)    
22 (SSH)     0.0.0.0/0
23 (TELNET)  0.0.0.0/0
9200         0.0.0.0/0

When i try and telnet from one box to the other using the private IP, or public DNS I get "Connection refused"

When I'm on one EC2 instance, I've tried telnetting to the other by:

Nothing works. What am i doing wrong? If I can't telnet from one box to the other, my understanding is that I'm not likely to have success with elasticsearch discover (which I haven't had with two other instances I setup and have since terminated).

Upvotes: 0

Views: 2579

Answers (1)

icalvete
icalvete

Reputation: 1159

Open 9300 port for the security group where two instances are run (Even if same security group for both !!!)

Use Group ID value. For instance sg-18e1f37a

Upvotes: 1

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