AWS Elasticsearch VPC connectivity

+1 vote

I've created an Elasticsearch domain in AWS.

It's added to my VPC inside a public subnet and I've attached a security group which is currently completely open.

I have this policy attached also:

  "Version": "2012-10-17",
  "Statement": [
      "Effect": "Allow",
      "Principal": {
        "AWS": "*"
      "Action": "es:*",
      "Resource": "arn:aws:es:eu-central-1:ACCOUNT_ID:domain/DOMAIN_NAME/*"

I am trying to access an endpoint locally but it doesn't seem to be allowed.

The Kibana URL for example is:

Any idea why I'm not able to access this URL?

Sep 4, 2018 in AWS by bug_seeker
• 15,550 points

1 answer to this question.

+1 vote
VPC Endpoint cannot be accessed outside the subnets that you associated with the elastic-search domain.

you can try performing curl from any EC2 instances that is part of the same subnet that you associated with elastic-search, it should work.

If you need to access the endpoint from internet, then don't create VPC endpoint elastic-search instead create elastic-search domain with internet access. You can specify whether you want VPC or internet accessible cluster when creating the ES domain.
answered Sep 4, 2018 by Priyaj
• 58,100 points
Hi Priyaj, That's a great information. Just to understand more, is it possible to access the elastic search domain within VPC ?

Yes @Gopinaath, it's possible to access the elastic search domain within your VPC. Have a look at these documentations:

You can enable proxy using nginx which helps you to access the ES endpoint outside VPC

1. Install nginx and create a SSL certifcate using open ssl

2. Append the below lines under Virtual Host Configs to access ES

server {
            listen 443;
            server_name localhost;

            ssl_certificate        /etc/ssl/private/server.crt;
            ssl_certificate_key    /etc/ssl/private/server.key;
            ssl on;
            ssl_session_cache  builtin:1000  shared:SSL:10m;
            ssl_protocols  TLSv1 TLSv1.1 TLSv1.2;
            ssl_ciphers HIGH:!aNULL:!eNULL:!EXPORT:!CAMELLIA:!DES:!MD5:!PSK:!RC4;
            ssl_prefer_server_ciphers on;
#            server_name;

            location ^~ /_plugin/kibana/ {

                    add_header X-XSS-Protection "1; mode=block";
                    add_header X-Content-Type-Options nosniff;
                    add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE';
                    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                    proxy_set_header Host $http_host;
                    proxy_set_header X-Forwarded-Proto https;
                    proxy_redirect off;
                    proxy_connect_timeout      2400;
                    proxy_send_timeout         2400;
                    proxy_read_timeout         2400;


Hello Panneer S,

Thank you so much. It would be great if you could make this, an answer for better readability.

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