whose familiar here with AWS EC2 Elastic Beanstalk load balancer? I am deploying my .Net application that has SignalR using IIS 10 in EC2 and I always getting this error "WebSocket connection to 'wss://...' failed: Error during WebSocket handshake: Incorrect 'Sec-WebSocket-Accept' header value.
I am using Application Load Balancer and base on this link https://aws.amazon.com/blogs/aws/new-aws-application-load-balancer/ Websocket is now supported in Application Load Balancer but I cannot get it to work with my app. Everytime I try to connect with SignalR it always throws that same error and my Transport Type got roll back to Long Polling method. Note that this error does not come out when running my code locally via Visual Studio or deployed in IIS.
Related
Recently I installed SSL using ZeroSSL on my website and for doing that I had to deploy Load Balancer for my EC2 instance (IIS 10). I was initially using ftp to directly publish my ClickOnce application. But now I am not able to publish my application. It shows:
Failed to connect to 'ftp://website/folder' with the following error: Unable to create the Web site 'ftp://website/folder'. The server unexpectedly closed connection.
On the other hand I am able to connect via telnet to the server. But I am unable to connect via file explorer, it shows connection timed out.
Is it possible to do ftp publish through aws Load Balancer? If yes then, please point me in correct direction. And if no, what are other options?
Thanks a lot for taking time to answer and read my question!
PS. Please do let me know if you want any other details.
I am using WordPress Certified by Bitnami and Automattic, and one VM Instance running in Google Cloud Compute Engine.
I configured a free SSL certificate from Let's Encrypt for my website and also configured the Certbot Auto-Renewal script.
I tried using Cloudflare and I was receiving 5xx errors sometimes, mostly 522 timeout error. I stopped using the Cloudflare service, and I tried to configure a GCP load balancer for my VM Instance.
I created an Unmanaged Instance Group and I configured the HTTP protocol for my backend service with Cloud CDN Enabled in the load balancer, and for the Frontend, I configured an HTTP and HTTPS protocol and created a Google Managed SSL Certificate for the HTTPS protocol in my load balancer.
(The SSL certificate is ACTIVE)
I used this link to configure my load balancer in Google Cloud Platform:
https://docs.bitnami.com/google-templates/how-to/configure-lb-ssl-google-templates/
The problem is that I have 2 SSL Certificates and I get 502 Server Error:
*
"Error: Server Error The server encountered a temporary error and
could not complete your request. Please try again in 30 seconds."
*
I don't know how to solve this problem.
I just want to use a very basic and common configuration for my website.
I also want to know why I received a 522 timeout error from Cloudflare and how to solve it.
I need a quick response and appreciate your answers and help in advance.
I would advise you to follow 1 to create a HTTPS Load Balancer with the backend service 2. Once you create that, you can enable CDN 3.
Regarding the errors, Make sure that your backend instance is healthy and supports HTTP/2 protocol. You can verify this by testing connectivity to the backend instance using HTTP/2.
After you verify that the VM uses the HTTP/2 protocol, make sure your firewall setup allows the health checker and load balancer to pass through.
If there are no problems with the firewall setup, ensure that the load balancer is configured to talk to the correct port on the VM. I will also suggest you to walkthrough 4 for more steps that you can take to troubleshoot this issue.
I am new to aws and have very little networking knowledge.
I have set up an EC2 instance and installed sucessfully
MongoDB
my nodejs app server and
my angular web app on the same instance
I tried to access my web server from a browser using
https://ec2-54-255-239-55.ap-southeast-1.compute.amazonaws.com:3443/
and
ec2-54-255-239-55.ap-southeast-1.compute.amazonaws.com:3443/
but have not been successful so far. The error message :
This site can’t be reached
ec2-54-255-239-55.ap-southeast-1.compute.amazonaws.com refused to connect.
I need help
I'm trying to configure an aws beanstalk single instance. I've successfully created the instance, but when I navigate to the Environment URL, I get the following error.
Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /.
Reason: Error reading from remote server
What could be causing this and what do I need to do to fix it.
I'm deploying a java web app using tomcat.
I deployed an Application to AWS elastic beanstalk. When I try to open the application, I am getting 502 proxy error Saying following message.
Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /.
Reason: Error reading from remote server
Apache/2.2.31 (Amazon) Server at mehe.us-west-2.elasticbeanstalk.com
Port 80
Strange part is when I run the application from localhost(Still connected to amazon database) the application is working fine, but after deloying it is not working. Here's the link to application
Any ideas how to get rid off it.
The timeout value for HTTPD is lower than the timeout value set for ELB. Change the timeout value in /etc/httpd/conf/httpd.conf
The keep the value between reboots you'll need to either create a custom AMI or use .ebextensions feature.