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Problems with AWS Load Balancer Timeout and No Error in Node/Express


Problems with AWS Load Balancer Timeout and No Error in Node/Express

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Problems with AWS Load Balancer Timeout and No Error in Node/Express
Tag : facebook , By : General Mills
Date : November 20 2020, 12:01 PM

wish helps you You can try using GSLB. Who is your DNS provider? Ask them if they provide GSLB.
Here's a bit of an explanation: http://www.a10networks.com/products/axseries-gslb.php

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How to force node.js/express.js to HTTPS when it is running behind an AWS load balancer


Tag : node.js , By : user98986
Date : March 29 2020, 07:55 AM
To fix the issue you can do I have experienced the same issue, but in a slightly different context. I was deploying Node.js/Express application using the AWS Elastic Beanstalk and was able to install an SSL certificate on it.
The result of this was that my application was accessible on both the http and https protocol. The routing table of the load balancer were looking like this :
(Load balancer) http 80 --> (Node instance) http 8080
(Load balancer) https 443 --> (Node instance) http 8080
app.use(function(req, res, next) {
    if((!req.secure) && (req.protocol !== 'https')) {
        res.redirect('https://' + req.get('Host') + req.url);
    }
}
app.use(function(req, res, next) {
    if((!req.secure) && (req.get('X-Forwarded-Proto') !== 'https')) {
        res.redirect('https://' + req.get('Host') + req.url);
    }
    else
        next();
});

504 Gateway Timeout - Two EC2 instances with load balancer


Tag : amazon-ec2 , By : mylonov
Date : March 29 2020, 07:55 AM
Hope this helps In my case, it turns out that there was no problem with the load balancer. The final solution ending up being Ubuntu's hosts file in which there was an inexplicable entry to route traffic from some mystery IP to my application's host name. So, during the process of creating the PDF, paths were getting re-written by the PDF generator to point at the mystery server, and hence the Gateway timeout issues. I have no idea why it was occasionally working and not failing.
127.0.0.1 localhost
127.0.1.1 ubuntu-server
42.139.126.191 app.myapp.com

AWS elastic load balancer timeout


Tag : amazon-web-services , By : Jet Thompson
Date : March 29 2020, 07:55 AM
This might help you The reported error could be from your ELB, but more often than not it's from Nginx. In the former case, you can raise the IdleTimeout to a higher limit using AWS CLI:
# Modify ELB idle-timeout
aws elb modify-load-balancer-attributes --load-balancer-name <myloadbalancer> --load-balancer-attributes "{\"ConnectionSettings\":{\"IdleTimeout\":180}}"
http {
  // ...
  keepalive_timeout 180s;
}

504 Gateway Timeout using Application Load Balancer in ECS


Tag : development , By : CM.
Date : March 29 2020, 07:55 AM
around this issue After some attempts, I solved the issue setting the idle timeout attribute of the load balancer, as explained here in theory, because nothing was wrong with the single ECS Tasks. In Cloudformation, it was enough to add the attribute setting of the parameter, and double the default value.
AdminLoadBalancer:
  Type: AWS::ElasticLoadBalancingV2::LoadBalancer
  Properties:
    LoadBalancerAttributes:
      - Key: 'idle_timeout.timeout_seconds'
        Value: 120
    SecurityGroups:
      - !Ref 'AlbSecurityGroup'
    Subnets:
      - !Ref 'PublicSubnetAz1'
      - !Ref 'PublicSubnetAz2'
    Scheme: internet-facing
  Name: !Join ['-', [!Ref 'AWS::StackName', 'lb']]

Node.js Server Timeout Problems (EC2 + Express + PM2)


Tag : node.js , By : damomurf
Date : March 29 2020, 07:55 AM
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