Questions tagged [amazon-elb]

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

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Nginx set_real_ip_from AWS ELB load balancer address

I have a set of Nginx servers behind an Amazon ELB load balancer. I am using set_real_ip (from the HttpRealIpModule) so that I can access the originating client IP address on these servers (for ...
vitch's user avatar
  • 640
28 votes
3 answers
40k views

Nginx Solution for AWS Amazon ELB Health Checks - return 200 without IF

I have the following code that is working on Nginx to keep the AWS ELB healthcheck happy. map $http_user_agent $ignore { default 0; "ELB-HealthChecker/1.0" 1; } server { location / { if ($...
Adam's user avatar
  • 515
27 votes
11 answers
60k views

how to forward godaddy domain to ec2 load balancer

I have a domain with godaddy: example.com I have an ec2 load balancer pointing to an ec2 instance. I would like to example.com to point to my load balanced instance. I first added a www cname ...
petey's user avatar
  • 572
27 votes
4 answers
33k views

Redirect all http requests behind Amazon ELB to https without using if

Currently I have an ELB serving both http://www.example.org and https://www.example.org. I would like to set it up so any request pointing to http://www.example.org is redirect to https://www.example....
Jordan Reiter's user avatar
23 votes
3 answers
15k views

Is AWS's Elastic Load Balancer a single point of failure?

I am looking at moving our application up to Amazon Web Services. The plan is to have all of the EC2 instances mirrored across two availability zones. Due to data transfer costs, we will be staying in ...
Chris.B's user avatar
  • 421
19 votes
1 answer
4k views

Does Heartbleed affect AWS Elastic Load Balancer?

The Heartbleed OpenSSL vulnerability (http://heartbleed.com/) affects OpenSSL 1.0.1 through 1.0.1f (inclusive) I use Amazon Elastic Load Balancer to terminate my SSL connections. Is ELB vulnerable?
secretmike's user avatar
18 votes
1 answer
21k views

2 ELBs (ALBs) to 1 target group, possible?

I have the following scheme: Internet <-> elb1external <-> varnish <-> elb2internal <-> targetgroupofwebnodes But some /static/* & /media/* are routed to targetgroupofwebnodes from ...
GTXBxaKgCANmT9D9's user avatar
16 votes
7 answers
15k views

How can I make my web server reachable via IPv6 on the AWS platform?

My business's web site uses the AWS platform. I want the site's visitors to be able to reach my content using the IPv6 protocol. How can I add an IPv6 address?
Jeff Loughridge's user avatar
16 votes
3 answers
6k views

How can I use https with AWS Cloudfront without paying $600 to upload my cert?

I can host a dynamic website through Amazon CloudFront because they have CNAME Wildcard Support. However, some pages of my Site use HTTPS. Amazon have some documentation about how to associate your ...
Tom's user avatar
  • 4,367
15 votes
2 answers
32k views

What algorithm does Amazon ELB use to balance load?

I found this in the official ELB documentation By default, a load balancer routes each request independently to the application instance with the smallest load. but an article on Newvem says ...
kn330's user avatar
  • 837
14 votes
3 answers
13k views

Elastic Load Balancer for multiple webapps

I have N webapps. Each webapp is served by a different hostname in my domain and deployed to 2 instances running in AWS. In other words, I have 2N instances, divided into pairs which run N distinct ...
thesamet's user avatar
  • 317
14 votes
4 answers
26k views

How to redirect HTTP to HTTPS on AWS Application Load Balancer?

Our website needs HIPAA compliance so everything needs to be encrypted. I don't want client to get an error message when they put in "http://mysite.com", so I need to support both HTTP and HTTPS, and ...
AussieDude's user avatar
14 votes
3 answers
8k views

AWS - Assign an Elastic IP to a ELB

Is it possible to assign an Elastic IP to a Load Balancer?
Mark's user avatar
  • 462
14 votes
1 answer
22k views

How to log original value of $remote_addr when using Real-IP

My environment has user requests passing through a number of systems: [Client] --> [ELB] ---> [nginx] --> [web] (ELB = AWS Elastic Load Balancer) Thanks to this answer, I have nginx determining and ...
michaelg's user avatar
  • 260
13 votes
7 answers
36k views

Endless Redirect Loop with AWS ELB and wordpress site using wordpress https plugin

I have configured an AWS ELB to point to my Ubuntu Server running the Wordpress 3.2.1. Everything worked great on the server until I put it behind a load balancer. I setup the load balancer to ...
ChickenFur's user avatar
13 votes
2 answers
15k views

Setting Up ELB with SSL - What is Backend Authentication?

I started setting up Amazon's Elastic Load Balancing Service for my server pool and I need to setup HTTPS/SSL. I have all my SSL Certificates setup, but then I come to the step for backend ...
whobutsb's user avatar
  • 249
12 votes
2 answers
3k views

AWS recommends 54 t2.nano EC2 instances instead of one m5.xlarge

We have deployed a web application on an m5.xlarge EC2 instance and when we try to buy an annual or 3 years reserved license, AWS recommends based on our current usage it is recommended to purchase 54 ...
Upul Dissanayake's user avatar
12 votes
2 answers
7k views

SSL redirect on EC2 instance behind SSL terminating load balancer

I'm trying to redirect all url's to https in a web application. I have an ec2 instance behind an elastic load balancer. SSL is terminated on the load balancer. Any attempts at redirection end up ...
rix's user avatar
  • 277
12 votes
1 answer
12k views

AWS Fargate + Application Load Balancer SSL Termination

I'm trying to configure ECS Fargate behind an Application Loader Balancer (ELBv2), and I would like to terminate the TLS/SSL connections on the ALB, and send HTTP traffic (port 80) to the Fargate ...
Jeremy Blalock's user avatar
11 votes
3 answers
14k views

How to set up ELB health checks with multiple applications running on each EC2 instance?

At AWS we'd like to to use ELBs to load balance EC2 instances which host multiple applications. Ideally we'd like to have a health check for application. However, AWS Elastic Load Balancers currently ...
Andrei Fierbinteanu's user avatar
10 votes
3 answers
18k views

Install SSL on Amazon Elastic Load Balancer with GoDaddy Wildcard Certificate

I'm a bit stuck installing an SSL Cert on an AWS Elastic Load Balancer. I have a wildcard certificate from GoDaddy and need to point it at the ELB. I have run the command (I ran it on one of the ...
Peter's user avatar
  • 250
10 votes
2 answers
9k views

Can Elastic Load Balancers correctly distribute traffic to different size instances

Just been looking into Elastic Load Balancers. As I understand it they just do round robin, evenly distributing connections to the servers behind them. So what happens if you have different size ...
Sean Bannister's user avatar
9 votes
2 answers
11k 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 ...
site80443's user avatar
  • 213
9 votes
3 answers
6k views

Using Amazon Load Balancers to route traffic to private servers outside Amazon

I'm looking into using Amazon Elastic Load Balancing (ELB) in order to reduce downtime when a server goes down. Basically, I don't want to change the relevant DNS records and wait for DNS propagation ...
Emanuil Tolev's user avatar
9 votes
2 answers
6k views

Amazon ELB HTTPS Not working

I'm trying to get HTTPS working with AWS ELB. I've been trying for about an hour, but no matter what i try, i just get connection timed out when connecting via HTTPS. HTTP works fine, but not HTTPS. ...
Aaron's user avatar
  • 93
9 votes
3 answers
26k views

Load Balancer on Amazon does not have secure flag set for Cookie

We have a java based application running on Amazon and have configured our Amazon ELB to connect to them successfully. However, we are seeing that the Cookie flag not set as Secure. Name Value ...
Lego's user avatar
  • 485
9 votes
2 answers
9k views

How to block Nginx access log statements from specific user agents

I am looking to turn off logging in the Nginx access log file from specific requests from http user agents. Basically from the Amazon ELB Health Check and our external (Pingdom) monitoring. Since ...
briannyc's user avatar
9 votes
3 answers
3k views

Apache DirectorySlash redirects HTTPS requests back to HTTP

User Request: https://www.example.com/test HTTPS requests --> AWS ELB HTTPS Listener --> Apache HTTP Apache getting http://www.example.com/test Apache redirect it to http://www.example.com/...
starchx's user avatar
  • 533
9 votes
3 answers
6k views

AWS ELB as backend for Varnish Accelerator

I am working on a large deployment on AWS that has high uptime requirements and variable loads throughout the day. Obviously, this is the perfect use case for ELB (Elastic Load Balancer) and ...
addisonj's user avatar
  • 318
8 votes
1 answer
4k views

Is it possible to show a static page if all ELB registered instances are down?

We are using AWS ELB to offload SSL and load balance the incoming traffic. If all instances are down/unhealthy the ELB just sends back a blank page with HTTP status 503. Is it possible to send a ...
Heinrich's user avatar
  • 910
8 votes
2 answers
9k 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 ...
Sam's user avatar
  • 720
8 votes
1 answer
1k views

Unicorn behind ELB, no nginx

If I understand Unicorn right (and in particular from their philosophy doc) it seems like Unicorn was really designed to operate behind a reverse proxy like nginx. My question is: can I drop nginx ...
pedro's user avatar
  • 181
7 votes
1 answer
14k views

Possible to log X-FORWARDED-FOR to nginx error_log?

Nginx allows custom log formats for access logs -- right now I'm logging http_x_forwarded_for and it's working fine. The problem is my error log only shows the LB IP. After Googling and reading ...
skrewler's user avatar
  • 308
7 votes
3 answers
5k views

The site is using outdated security settings that may prevent future versions of Chrome from being able to safely access it

We're using an AWS ELB to do SSL termination and are having an issue where Chrome is displaying "https" in red with a strikethrough. It says "The site is using outdated security settings that may ...
Brad Dwyer's user avatar
7 votes
2 answers
3k views

How can I setup SPDY with Jetty behind Amazon's ELB?

I want to deploy SPDY, but I'm using Amazon's ELB TCP routing. The ELB also handles the secure connections for us. How can this be configured on the jetty side?
arturnt's user avatar
  • 173
7 votes
1 answer
20k views

AWS Cloudfront + Load Balancer, url changes from main domain to load balancer subdomain

My setup is as follows: user types example.com on the browser request goes to AWS CloudFront, which redirects HTTP to HTTPS, and forwards the request to the AWS Elastic LoadBalancer (elb.example.com) ...
Mohamed Heiba's user avatar
7 votes
3 answers
10k views

Force HTTPS with AWS Elastic load balancer

I need to redirect all incoming HTTP traffic to HTTPS on my elastic load balancer. I tired using Apache mod_rewrite: RewriteEngine On RewriteCond %{HTTP:X-Forwarded-Proto} !https RewriteRule !/...
panos2point0's user avatar
7 votes
1 answer
2k 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 ...
2rs2ts's user avatar
  • 325
6 votes
2 answers
8k views

IP Range for internal private IP of Amazon ELB

I'm trying to find out the range of IP addresses that an Elastic Load Balancer could have from an EC2 instance which is behind it. This is so I can configure the HttpRealIpModule of nginx correctly. ...
vitch's user avatar
  • 640
6 votes
2 answers
35k views

How to ping / traceroute an AWS ELB

Amazon's load balancers have a network security policy which swallows ICMP packets for both ping and traceroute. It is listed as security group amazon-elb/amazon-elb-sg. Personally I find these ...
Leopd's user avatar
  • 1,897
6 votes
2 answers
1k views

Load Balancing on Amazon (AWS) and staying up to date

I would like to have a load balancer for my site and have the site up to date. The load balancer will take the AMI I select and spin up more of those instances when processing power hits a certain ...
jchysk's user avatar
  • 319
6 votes
1 answer
9k views

Using an Elastic Load Balancer with a single EC2 instance on AWS

I'm using the AWS Free Tier, which gives me one free EC2 microinstance and one free Elastic Load Balancer, if I understand things correctly. I understand that usually ELBs are used when you are using ...
nucleon's user avatar
  • 263
6 votes
1 answer
3k views

AWS EC2 Instance Auto Scaling Confusion

So first off I'm completely new to AWS so bear with me. I have had one instance running for a few months now and I now need to autoscale it as I am getting bigger traffic spikes and it gets ...
Dan's user avatar
  • 237
6 votes
2 answers
4k views

AWS Autoscaling Group won't honor five minute draining policy of the Target Group when scaling down

We have an Autoscaling Group in AWS that we manually scale up and down at the time being. Our ASG is currently attached to one Target Group, which has all of our prod servers in it. Before using the ...
Michael Davidson's user avatar
6 votes
1 answer
9k views

ALB Connection Draining is always reaching the "Deregistration Delay"

I'm using ECS along with ALB to expose my containers to the internet. When I'm updating a container image (I'm using CloudFormation to update the tasks and services), the target group set the ...
Laurent Jalbert Simard's user avatar
6 votes
2 answers
10k views

AWS Fargate task fails ELB health checks

How can I troubleshoot it further? I am trying to run a simple nginx container but the load balancer complains that health checks are failed and the task does not respond on its ip number, likely ...
Niklas Rosencrantz's user avatar
6 votes
1 answer
3k views

AWS Application ELB sometimes responds 502 without calling the backend

We have the following setup: An AWS Application ELB has a target group of 4 EC2 instances. On each of the EC2 instances, there is an Apache2 which forwards to a Tomcat. It works brilliantly. Except ...
Jan Dörrenhaus's user avatar
6 votes
2 answers
6k views

High availability Bastion host - Best practices, ELB, EIP?

I am currently trying to figure out a good configuration to make a Bastion host highly available. I want to meet the following targets: The bastion host(s) need to able to withstand a Availability ...
M. Glatki's user avatar
  • 2,074
6 votes
1 answer
7k views

How to health check Squid server with ELB?

I wanted to have an HA forward proxy solution using Squid, and I am trying to use the Squid servers behind ELB solution on page 41. However, my forward proxy service is a service meant to forwarding ...
chen's user avatar
  • 339
6 votes
3 answers
32k views

Troubleshooting HTTPS on AWS ALB: Target Group Health Check Failing

I'm having trouble setting up HTTPS for my AWS EC2 instance. In short, I'm running a program on an EC2 instance, and it's critical that I be able to transfer the data securely from clients to AWS. ...
pixel-drinker's user avatar

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