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AWS ES proxy
var AWS = require('aws-sdk');
var http = require('http');
var httpProxy = require('http-proxy');
var express = require('express');
var bodyParser = require('body-parser');
var stream = require('stream');
if (process.argv.length != 3) {
console.error('usage: aws-es-proxy <my-cluster-endpoint>');
process.exit(1);
}
var ENDPOINT = process.argv[2];
var m = ENDPOINT.match(/\.([^.]+)\.es\.amazonaws\.com\.?$/);
if (!m) {
console.error('region cannot be parsed from endpoint address, must end in .<region>.es.amazonaws.com');
process.exit(1);
}
var REGION = m[1];
var TARGET = 'https://' + process.argv[2];
var PORT = 9200;
var BIND_ADDRESS = '127.0.0.1';
var creds;
var chain = new AWS.CredentialProviderChain();
chain.resolve(function (err, resolved) {
if (err) throw err;
else creds = resolved;
});
function getcreds(req, res, next) {
return creds.get(function (err) {
if (err) return next(err);
else return next();
});
}
var proxy = httpProxy.createProxyServer({
target: TARGET,
changeOrigin: true,
secure: true
});
var app = express();
app.use(bodyParser.raw({type: '*/*'}));
app.use(getcreds);
app.use(function (req, res) {
var bufferStream;
if (Buffer.isBuffer(req.body)) {
var bufferStream = new stream.PassThrough();
bufferStream.end(req.body);
}
proxy.web(req, res, {buffer: bufferStream});
});
proxy.on('proxyReq', function (proxyReq, req, res, options) {
var endpoint = new AWS.Endpoint(ENDPOINT);
var request = new AWS.HttpRequest(endpoint);
request.method = proxyReq.method;
request.path = proxyReq.path;
request.region = REGION;
if (Buffer.isBuffer(req.body)) request.body = req.body;
if (!request.headers) request.headers = {};
request.headers['presigned-expires'] = false;
request.headers['Host'] = ENDPOINT;
var signer = new AWS.Signers.V4(request, 'es');
signer.addAuthorization(creds, new Date());
proxyReq.setHeader('Host', request.headers['Host']);
proxyReq.setHeader('X-Amz-Date', request.headers['X-Amz-Date']);
proxyReq.setHeader('Authorization', request.headers['Authorization']);
if (request.headers['x-amz-security-token']) proxyReq.setHeader('x-amz-security-token', request.headers['x-amz-security-token']);
});
http.createServer(app).listen(PORT, BIND_ADDRESS);
console.log('listening at ' + BIND_ADDRESS + ':' + PORT);
@lerrigatto

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lerrigatto commented Nov 25, 2015

Hi! This is great!

@mooreds

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mooreds commented Jan 12, 2016

@nakedible-p, did you end up deciding to make this a npm module? Just curious.

Thanks for providing this!

@lfrancois

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lfrancois commented Jan 27, 2016

Hi @nakedible-p!

First thanks for your work on this proxy. I try to use it with my fresh AWS ES cluster, but I get this error. Any idea why?

root@kibana ~ # node es-aws-proxy.js 
usage: aws-es-proxy <my-cluster-endpoint>
root@kibana ~ #

root@kibana ~ # node es-aws-proxy.js search-mycluster-XXXXXXXXXXX.us-west-2.es.amazonaws.com
listening at 127.0.0.1:9200

/root/es-aws-proxy.js:26
    if (err) throw err;
                   ^
SyntaxError: Unexpected token <
    at Object.parse (native)
    at /root/node_modules/aws-sdk/lib/metadata_service.js:115:38
    at IncomingMessage.<anonymous> (/root/node_modules/aws-sdk/lib/metadata_service.js:74:45)
    at IncomingMessage.emit (events.js:117:20)
    at _stream_readable.js:944:16
    at process._tickDomainCallback (node.js:492:13)
root@kibana ~ # 
@lfrancois

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lfrancois commented Jan 27, 2016

I forgot to set correctly my AWS IAM information, now it works better!

root@kibana ~ # export AWS_ACCESS_KEY_ID=XXXXXXXXXX
root@kibana ~ # export AWS_SECRET_ACCESS_KEY=YYYYYYY
@vevo-john-delivuk

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vevo-john-delivuk commented Feb 11, 2016

@nakedible-p Would you be interested in making it an npm? I'd be happy to setup the project and give you full access. I just want to get this out there for others to use as easily as possible. I've heard from AWS there is a solution coming in the near future to alleviate the need for this, but as of right now this is by far the best solution I've found. Kudos sir!

@chiefy

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chiefy commented Mar 12, 2016

I wish I had this two months ago, thanks so much! AWS should put it in their docs!

@santthosh

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santthosh commented Mar 30, 2016

Added an npm module for this aws-es-kibana. Thanks @nakedible-p

@satheessh

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satheessh commented Apr 20, 2016

getting below error fluentd + proxy. however simple curl (localhost:9200) works fine.

error_class="Elasticsearch::Transport::Transport::Errors::Forbidden" error="[403] {"message":"The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details.\n\nThe Canonical String for this request should have been\n'POST\n/_bulk\n\nhost:search-elastic-search-fx2ecksqldt5uoljqaawt655fa.us-east-1.es.amazonaws.com\nx-amz-date:20160420T093625Z\n\nhost;x-amz-date\n98a6e169f9136854c5dd591dcd23a606cd70311ca643bcde483c87dbad18ff2f'\n\nThe String-to-Sign should have been\n'AWS4-HMAC-SHA256\n20160420T093625Z\n20160420/us-east-1/es/aws4_request\n0cb3e76bfed7f8b25715e4ab35cead39054dface473512275c6f832d2ea11b8a'\n"}"

@jindov

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jindov commented Aug 21, 2017

+1 you save my day
I use supervisor to control this, configure with AWS variables
Thanks

@nicokruger

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nicokruger commented Sep 15, 2017

+1, this works brilliantly!

@joonaskaskisola

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joonaskaskisola commented Nov 29, 2017

Excellent, thank you!

@arunjadhav16

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arunjadhav16 commented Aug 14, 2018

Will this work with IAM Roles ? am little skeptical about using access key and secret access key.

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