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

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Can't access AWS ec2 instance behind elastic load balancer

I've been following lynda.com's AWS essential training and I've successfully set up an EC2 instance but when I try to put it behind a load balancer I can not access it through the ELB's public DNS. ...
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21 views

Change amazon's ELB domain name to my own domain without it changing upon resolving it

I'm trying to set my own domain name as an alias for the generated DNS by Amazon's ELB. The generated DNS is not good for me, since I've purchased a certificate for my domain (www.domain.com). ...
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22 views

Tomcat 8.0.43 not using Keep Alive

I'm trying to setup a few app servers behind Amazon's ELB and I've been getting some 504 errors that I've been tracking down. Looking at the Tomcat manager app under status, I'm seeing the following: ...
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36 views

Varnish configuration with Apache webserver in AWS ec2 free tier

I have AWS ec2 free tier where i have deployed my sample. I have configured the webserver to listen on 80 port. I am able to access the application by the below URL http://X.X.X.X/SampleApp But ...
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0answers
35 views

certificate does not match name aws private ip

Using AWS ec2 with a load Balancer and elastic IP. Im trying to add and SSL certificate but getting the following error. Certificate does not match name shop.domain.com Subject ip-172-31-19-115 ...
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29 views

ELB health checks for freshly launched EC2 instances not working

I'm trying to manually set up a load balanced environment using EC2. My instances are reachable via SSH and ping. However, as soon as I put them inside a load balancer, the instances are not able to ...
1
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1answer
92 views

is there a standard for chaining x-forwarded-for headers?

IETF RFC 2616 Section 4.2 allows a request to contain multiple headers with the same field-name as long as chronological order of insertion is preserved and their values can be converted into single ...
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1answer
88 views

How does nginx distribute traffic among IPs associated with an upstream DNS name?

With this configuration: upstream some_upstream { server some-elb.us-east-1.elb.amazonaws.com:80; } If some-elb.us-east-1.elb.amazonaws.com maps to 2 IP addresses, how will nginx distribute ...
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71 views

AWS ELB SSL and Health Check Issue

I'm getting very frustrated trying to sort this issue out. We have an AWS environment that uses SSL certificates at the load balancer. We also have a rewrite rule in httpd.conf that redirects all ...
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33 views

AWS ELB and forcing Https

I have an ELB which in the first place was set to forward in this way: Protocal Port Forward-Protocol Port Http 80 Http 80 Protocal Port Forward-Protocol ...
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2answers
43 views

Cannot put application back into ELB: Instance has not passed the configured HealthyThreshold number of health checks consecutively

Putting the EC2 instance back into the ELB used to work 90% of the time. Unfortunately lately the deployment regulary fails with the next error: 15:51:59 TASK: [Start the app] ...
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29 views

Is it possible to use an Elastic Load Balancer on an IIS Server accepting BITS Uploads?

I have a website hosted on EC2 using IIS 8.5. I've got a virtual directory with BITS uploads enabled, and everything works over http and now https when my URL points to the instance's public EIP. The ...
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2answers
157 views

How to set “server preference” for tls cipher suites?

Mozilla has a tool to generate server configurations at Mozilla SSL Configuration Generator. For Amazon Elastic Load Balancing (ELB), the configuration does not appear to have a setting for "use ...
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1answer
88 views

Retrieve clients geolocation info from AWS ELB?

Forgive me if this question is in the wrong place; had difficulty deciding whether this belongs on SO or SF. Since I'm not asking for code, I guess here would be the best place. We want to be able to ...
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17 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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2answers
125 views

How to run a java jar file on Elastic bean stack

Currently I am using elastic beanstack for drupal application and choose the “Web Server” environment it is pre-defined configuration that uses PHP 5.5 with Apache. I need to deploy the java API ...
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2answers
128 views

How do we check ELB **own** instance health/connectivity?

Please note that this question is about ELB itself, not EC2 instances behind ELB Situation We have experienced the following ELB issue recently: 50% of requests were did not reach our backend and ...
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1answer
81 views

What's a good load balancer check for puppet master

We are running a couple of Puppet Master version 3.7 (Not PE) on AWS EC2 instances behind an Elastic Load Balancer (mainly for high availability). Currently the load balancer's check is just TCP ...
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118 views

Django - Health check for AWS ELB

I'm hosting web application on AWS with Nginx 1.6.3 and django 1.7.6 I have ELB in front of EC2 instance and its ping target is HTTP:80/health_check of EC2 instance. Until now, I've checked EC2 ...
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163 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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178 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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3answers
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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 ...
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2answers
76 views

Can we launch website without AWS Load Balancer?

I've requirement that I want to publish a small web CMS in a CLOUD environment. Therefore I thought since I've a AWS account and go for it, but my client does not want bear any high cost. So I'm ...
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1answer
43 views

Configure a transparent Elastic Load Balancer

I want to create an Elastic Load Balancer in front of my SSL site which simply passes through ports 80 and 443. I do not want my Elastic Load Balancer to have an SSL certificate of its own, I just ...
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58 views

Sitecore and AWS Elastic Load Balancer

My organization is helping to move a sitecore installation from self-hosted to AWS. I'm just a humble system administrator (and one who joined the project half-way through) there is another guy ...
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1answer
92 views

Do I need “A record” for AWS ELB while I set up CNAME?

I register the domain through GoDaddy. And now i have a AWS EC2 server behind a ELB. I read the document from AWS about setting up the CNAME. which I did. www CNAME elb.aws.address while ...
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2answers
54 views

1and1 domain redirected to Amazon ELB: 1and1 free email accs management

The web is behind an elastic load balancer in Amazon. I registered the domain with 1and1 which offers 10 free email accounts for the domain so I don't have to care about email servers for the moment. ...
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2answers
702 views

Redirect loop when forcing HTTPS

I am using the following to force HTTPS on my main website. ### Force SSL RewriteCond %{HTTPS} !=on RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301] If you want to view the full htaccess ...
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85 views

Amazon ELB + EC2 Header mismatch

Preamble: I have an AWS Elastic Load Balancer in front of a Single Amazon EC2 instance. I have 3 other EC2 instances sending requests via curl to the Load Balancer. Direct requests to the EC2 ip has ...
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2answers
103 views

Limit ingress to an internet facing VPC-ELB to only another AWS account's instances

In EC2 classic you were about to reference another account's security group in your security group to limit ingress to an instance or ELB to members of that other account's security group. I'd like ...
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34 views

AWS ELB 400 BAD_REQUEST with space at the end of a URI

We're using AWS ELB for HTTP/S load balancing, and we've run into a pretty crazy issue with the ELB. $ curl -i "http://yourdomain.com/ " HTTP/1.1 400 BAD_REQUEST Content-Length: 0 Connection: Close ...
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82 views

Elastic Load Balancer connection draining causes a blank page for some web sessions

I'm running 3 EC2 instances behind an ELB with connection draining enabled (set to 300ms). When I remove an instance from it, I can see fewer and fewer web requests in the server log until eventually ...
2
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1answer
118 views

Disabling SSLv3 in ELB on Amzon linux ec2

Hi I have Elastic Load Balancer on which I've deployed my ssl certificates and when i check on the web it say site is vulnerable because of SSLv3 is enabled on the site. So my question is What ...
2
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1answer
203 views

CloudFormation with an ELB and its public dns

I'm using Cloudformation to build a load balanced stack. My concern is that each time the stack is recreated, the ELB public url will change, which will require a change in the website's route 53 ...
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1answer
762 views

Whitelist Elastic Load Balancer based on IP [closed]

I'm serving HTTP traffic on port 80 through an ELB. Since a short time, a growing amount of clients are asking me what our IP addresses are (to harvest data). Apparently they can't whitelist the DNS ...
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31 views

How to target www.example.com\ in RedirectMatch rule?

Particular requests are coming into my site formed as: www.example.com\ The trailing backslash is causing a 503 response to come from the server, which is behind an ELB, ideally I'd send these back ...
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0answers
393 views

haproxy proxy protocol x-forwarded-for

I'm using haproxy instances behind AWS ELB. For HTTP Rest, i works like a charm. Now i want to dispatch websockets and have to switch my AWS ELB to TCP mode. I Want to get realip from by backend ...
2
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1answer
425 views

ELB - High latency when enabling cross-zone balancing

I'm working on improve our infrastructure reliability in AWS and one of my tasks is enabling cross-zone balancing on our ELBs. Our ELBs receives around 20K request by second on rush hours as well as ...
0
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1answer
126 views

No Data returned from IIS 8 behind Amazon ELB

We have a few Windows 2012 boxes running IIS 8 behind an AWS ELB. On a recent reboot, we lost the ability to hit those servers, via web browser, when connecting through the ELB. If we address the ...
0
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1answer
195 views

What's the difference between a private and public subnet?

For the purposes of learning, I'm trying to setup a public/private VPC in AWS without using the wizard, and I'm trying to determine how AWS decides if a subnet is private/public. For argument sake, ...
1
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1answer
570 views

VPC public subnet internet access with ELB hooked up

I am attempting to set up a web server (nginx) that needs access to the internet while also being hooked up to an ELB but I am having trouble getting this solution working. Details: 3 public ...
2
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0answers
54 views

Incremental Subdomain Brute forcing?

Currently looking after a small varnish/nginx webserver group sitting behind an AWS ELB. Monitoring of the primary domain recently picked up a huge number of hits to non-existent sub-domain ...
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1answer
491 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 ...
1
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1answer
141 views

Nginx : AWS Route 53 : ELB : naked redirect

Setup I have two rails app instances running in Opsworks Layer. I am using Route 53 and an ELB to route traffic to my Layer. Objective To redirect naked domain traffic to my www domain. chicken.com ...
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406 views

using nodejs https module with ssl certificate proxy with nginx without adding ssl certificate in nginx

I am using nodejs https module with nginx proxy. I have multiple ssl certificate and I want to run all https sites using node without adding all certificates in nginx ssl server. Is any way to proxy ...
0
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1answer
155 views

Trouble installing SSL on AWS elb

I'm trying to set up a Gandi SSL certificate but can't get it right from firefox point of view. I installed it on my load balancer (ELB) by converting my certificated to the pem format using the ...
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3answers
409 views

Block traffic behind AWS ELB

My web servers are behind ELB, I want to block traffic from some specific user agent which is a DDOS attack. Apache always see ip address of ELB as an end user so I tried below attempts: Blocking IP ...
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1answer
130 views

Elastic Load Balancer bandwith vs EC2 [duplicate]

How does pricing with AWS works. By exemple: 1024 Go of Data Transfer Out in their calculator (http://calculator.s3.amazonaws.com/index.html) cost about 120$. If you remove this 1024Go and move it ...
2
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2answers
2k views

Can't get Network Solutions Certificate chain working with EC2 Elastic Load Balancer

I have a certificate file provided to me which is a wildcard domain name. It comes as both a key and a crt file. No other files were provided. I'm having trouble getting it to work correctly with ...
0
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1answer
68 views

Determine EC2 instance's load balancer automatically

Is there a way to automatically determine what the load balancer, if any, of a given EC2 instance is? I.e., have it ask "who is my LB and what is its service IP?". I was thinking of the instance ...