ELB is Amazon's managed Load Balancer service, used in conjunction with its EC2 virtual machine cloud hosting service.

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How to upload a certificate to Amazon ELB?

I've generated the pem files for a new certificate which we recently purchased from comodo, using this link as a guide: ...
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50 views

Way to limit Amazon ELB to a fixed set of IP addresses?

We would like to use Amazon Elastic Load Balancing, however, our application requires a fixed set of IP addresses as our clients need to know a finite list of possible destinations for specific ...
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30 views

How to configure ELB load-balancer over HTTPS for two sites deployed to the same pair of servers?

I would appreciate immensely if you shed some light into what we might be missing or doing wrong. I am not completely in charge of the configuration, and I'm not an expert on the subject, but have ...
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9 views

Listener Protocol for ELB in front of Squid Proxy

We have two Squid proxy servers for High availability. We want to use Amazon ELB in front of these Squid proxy servers. When we use Load Balancer Protocol as TCP and port 8080, Instance Protocol TCP ...
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24 views

Is it a good design to have multiple proxy layer?

I have 3 Django applications (Django + Nginx for static files) in autoscaling group in AWS. All are served as subdolfers of a single domain http://example.com/app1 http://example.com/app2 ...
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2answers
896 views

Is AWS ELB a viable replacement of RDGW

tl;dr Is Amazon Web Services Elastic Load Balancer a viable replacement for Remote Desktop Gateway? short enough; did read My client currently uses a remote desktop gateway with roughly 10 remote ...
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29 views

Unable to get Route 53 to work with ELB

I have created an ELB for my 2 dev instances. My domain name is example.com, which is an A record to an Elastic IP for an EC2 instance. I'm trying to create a subdomain record dev.example.com, which ...
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27 views

Force nginx to close connection

We have a setup that looks like this: Client -> AWS ELB (tcp load balancing)-> NGINX (ssl termination) -> application server. We want to gracefully take application servers out of the load balancer. ...
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1answer
156 views

AWS ELB Latency issue

I have two c3.2xlarge EC2 machines with Ubuntu environment both in us-west-2a AZ. Both contains same code with mySQL database from AWS RDS (db.r3.2xlarge). Both instances are added to an ELB. Both has ...
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60 views

AWS ELB with SSL backend adds proxy protocol inside SSL stream

Note, this has been also posted in http://thread.gmane.org/gmane.comp.web.haproxy/27737 we are trying to configure this architecture: ELB terminating SSL, using preconfigured certificates. ...
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1answer
112 views

Cloudformation ELB Cloudwatch Alarms InsufficientData

I have setup a bunch of cloudwatch alarms for my service using cloudformation. All my alarms work except for the ELB alarms. They always just show insufficient data. I can go into the console and ...
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34 views

AWS Elastic Load Balancer And 408 Request Timeout

We have a scenario where we are trying to access Openfire admin console behind AWS ELB using https. The http url works fine , but the https does not work, and we see a 408 request timeout error while ...
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18 views

ELB_5xx errors but no application errors

We see lot of ELB_5xx errors recently. During this time there is no error logged in the back end server, no HTTP 5xx errors , there is no 5xx errors in ELB logs and there is no application restart. ...
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1answer
1k views

AWS Elastic Load Balancer : white list only my IP

My objective: To make my AWS Elastic Load Balancer hittable by only traffic from my ip. What I have tried: created a security group in EC2 security groups set an inbound rule that allows all ...
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2answers
2k views

After setting up Elastic Load balancer my https doesn't work anymore. Nginx error

I have a regular instance that works fine when not behind a load balancer. I set up an ELB with 80 forwarding to 80 and 443 forwarding to 443 and sticky sessions. Afterward I receive this error when ...
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2answers
767 views

ELB Https with HTTP on backend using Tomcat without nginx or haproxy

I want to setup ELB to terminate SSL at load balancer and communicate with backend instances over HTTP. I have uploaded valid certificate on ELB. When I set up following configuration ELB - HTTPS ...
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1answer
29 views

AWS ELB health check fails on LDAP authentication

I am running a Docker container through ECS. The container runs an Apache server hosting a simple web application. However, the server requires LDAP authentication to access the page. I am using a ...
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1answer
338 views

How to add AWS ELB access logs to logstash with S3 input?

I'm using an ELK stack for server monitoring. My application's access logs which are from AWS ELB are stored in AWS S3. I am trying to add them to logstash with the following input: input { s3 { ...
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27 views

Elb healthcheck fails for Https

Im using a url for ELB healthcheck in AWS. This health check is working with Http:1140/<myurltoapplication> and the attached Ec2 Instance were showing as Inservice but when i use ...
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2answers
2k views

How to configure Amazon ELB ping target for haproxy

I'm trying to setup Amazon ELB to route requests to couple of haproxy servers. ELB requires a ping target to the respective servers for health check. It uses index.html at port 80. I'm struggling to ...
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2answers
428 views

How to manually drain ELB connections for a EC2 instance?

I have connection draining enabled for a ELB. According to the documentation at http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/TerminologyandKeyConcepts.html#conn-drain, a ...
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1answer
14 views

Installing Deis in AWS without ELB

I'd like to install a Deis cluster in AWS but without using ELB, since we have already paid for an alternative (BigIP), and our network guys are comfortable with it. Is it easy to configure Deis not ...
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1answer
64 views

AWS ELB health check when using nginx and TCP

I have an elasticbeanstalk environment that uses nginx as a frontend server for a node.js application. The environment uses an elastic load balancer configured to accept connections on ...
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1answer
55 views

AWS ELB with ipv6 fails on online tests

I have an ELB with ipv6 AAAA DNS configured on route 53. The problem is that the tests I used tell me it's not ok (I don't have an ipv6 connection for testing): AFAIK I don't need to configure ...
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1answer
378 views

Map one AWS ELB load balancer port to balance to multiple instance ports?

Lets say I have multiple processes running on multiple EC2 instances each on different ports. Can I map a single AWS ELB to balance to any of these processes across any instance? For example, I'd ...
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55 views

504s on Elastic Beanstalk app deploy (user -> ELB -> Elastic Beanstalk mod_wsgi)

I have a Python Elastic Beanstalk load-balanced app. Here is the path a user request takes on its way into the Elastic Beanstalk app: user -> Elastic Beanstalk ELB -> Elastic Beanstalk mod_wsgi ...
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35 views

ELB to tomcat https redirecting to http

So we have tomcat servers behind a AWS ELB. Everything is working fine with https except if we manually type in this address: https://example.com/web/ This works fine... https://example.com/web ...
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1answer
39 views

EC2 instances single public subnet - VPN Successful But no internet

I have successfully established a VPN connection to VPC EC2 Instances (Windows), which reside in single public subnet. But, both instances cannot ping Google or each other. Is it possible to assign a ...
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2answers
48 views

AWS ELB health check failing when trying to force HTTPS through NGINX for my single page application

I'm trying to force https on my http endpoints using NGINX like so: server { location / { root /data/www; if ($http_x_forwarded_proto != 'https') { rewrite ^ ...
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40 views

AWS ELB is adding http absolute path

We have tomcats running a Spring Security webapp. The https is terminated at the ELB (443), then forwarded to tomcat on 8080. However, when we log in, a successful login redirects us to ...
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2answers
5k views

Possible for HAProxy to perform a mix of SSL termination and passthrough?

I'm working on analyzing an intermittent load balancing failure in our application. Previously we had been using the AWS Elastic Load Balancer in the following configuration: HTTP 80 -> HTTP 80 ...
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1answer
51 views

AWS ELB logs missing requests

We are trying to match requests made to our backend instances with logs from our ELB. Our application server logs clearly indicate that certain requests are coming in, but the matching requests are ...
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1answer
46 views

AWS ELB not configuring properly with EC2 instance

I have a working EC2 instance I'd like to place, along with a copy, behind an Elastic Load Balancer, but I can't get it to work. ELB Settings: Ports: ELB HTTP:80 -> EC2 HTTP:80, default VPC ...
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71 views

Force SSL redirect with AWS decrypting SSL on an ELB and routing to Nginx/Passenger

Currently we are creating a new environment and are running into some quirks with SSL. We are using an ELB that accepts 80/443. Both route to the same port on an Nginx box (ELB Decrypts). On the Nginx ...
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456 views

AWS cloudfront with SNI + ELB with 443 to 80 redirection to EC2 issue

I have configured web server front ending with AWS ELB and CloudFront. I have deployed SSL certificate on load balancer (ELB) for HTTPS connection. We have set up 2 listener protocols: Source -> 80 ...
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1answer
48 views

AWS ELB + NGINX for rails app

If I'm using Amazon's Elastic Load Balancer for a Rails app, do I need to put an Nginx reverse proxy between the app and the ELB?
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60 views

Amazon RDS and Auto-Scale EBS: Security Groups

I have the following setup on Amazon AWS: An Auto-Scaling Group An ELB An RDS database Everything is in the default VPC The only thing about this setup that I don't quite understand yet relates to ...
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1answer
21 views

With PROXY support enabled in ELB, are occasional non-PROXY connections to the EC2 instance still possible?

We have PROXY protocol support enabled on our ELB but we seem to be occasionally getting non-PROXY TCP connections to the EC2 instance behind the ELB. The instance's Security Group only allows ...
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1answer
255 views

AWS ELB+Reverse Proxy (Nginx)+ELBs: Force SSL

I've reviewed/attempted prior suggestions found on the web to no avail. I currently have an ELB setup in front of my Nginx reverse proxy which then passes traffic onto 3 distinct ELBs which reside in ...
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3answers
104 views

Passing multiple https domains through Elastic Load Balancer

I just moved a site from one domain to another. It's still on the same servers behind an AWS Elastic Load Balancer. I also changed the certificate on the load balancer to one for the new domain. The ...
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1answer
358 views

Can I use the new free SSL/TLS AWS certificates without ELB or Beanstalk on plain EC2?

AWS just announced free SSL/TLS certificates here: https://aws.amazon.com/blogs/aws/new-aws-certificate-manager-deploy-ssltls-based-apps-on-aws/ Mainly: SSL/TLS certificates provisioned through ...
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118 views

Amazon ELB https termination results in 504 for large file uploads

I've stumbled upon the following issue and can't seem to find a solution. Setup: IIS server behind Amazon ELB setup to terminate SSL connections on the ELB with a setup of https 443 -> https 443 ...
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36 views

Understanding AWS ELB, multiple ELB per subnet or one ELB per subnet?

So I'm trying to setup a production site and I'm new to the devops world. I have a setup that consists of four components: 1) Node.js API Server 2) Memcached Elasticache cluster 3) Postgresql RDS 4) ...
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4answers
82 views

SSL certificate for CNAME redirected domain

I have a webservice which provides simple site constructor functionality with payment page. User can select purchase domain e.g. user.com, select some template and point this domain with CNAME to my ...
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0answers
114 views

Intermittent ERR_INVALID_CHUNKED_ENCODING

I have a Node.js application running in two AWS instances behind a ELB instance. Every now and then, I get errors such as ERR_INVALID_CHUNKED_ENCODING or ERR_CONTENT_LENGTH_MISMATCH. This is observed ...
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2answers
34 views

Loadbalancing a root domain redirection web server hosted in EC2 to remove SPOF

This may seem quite obscure and perhaps quite niche but bear with me. The situation is: www.domain.com points to infrastructure in EC2, specifically an ELB domain.com points to a micro instance in ...
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1answer
69 views

ELB level Sticky sessions AWS

Would like to know the real benefit/advantage of configuring sticky sessions @ load balancer level in AWS.. i understood from the AWS documentation that the user request will be routed to a specific ...
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1answer
146 views

Is it possible to use Kerberos over TLS through sssd?

Background I am trying to log in (via SSH, to an Amazon Linux EC2 instance running sssd) as users that I've created in my AWS Directory Services Simple AD. I am authenticating with Kerberos and ...
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13 views

Apache 2.2 Prefork generating many connections without load

I'm observing a problem where Apache 2.2 is starting up a tremendous amount of extra threads between 2:45 AM and 3:00 AM each night. I've gone through all the usual troubleshooting, and can't find a ...
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49 views

EJB Remoting Auto Scaling in AWS

I'm currently in the process of figuring out how to migrate a Java EE Middleware application from a single static server to a Load Balanced Wildfly Cluster in AWS (with an Auto Scaling Group behing an ...