time out cloud front

Pls check https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/http-504-gateway-timeout.html

Resolution 504: "Gateway Time-out" error Verify that the correct ports are open on your security group.

Make sure that the origin server allows inbound traffic from CloudFront, typically on port 443 or 80.

If your origin uses Elastic Load Balancing, then review the ELB security groups. Make sure that the security groups allow inbound traffic from CloudFront.

Verify that the origin server firewall allows connections from CloudFront

Depending on your OS, confirm that the firewall allows traffic for port 443 and 80.

If you're using Redhat Linux View, verify that your firewall rules match the following settings.

Firewall Rules:

$ sudo firewall-cmd --permanent --zone=public --list-ports Permanently Add Rules:

$ sudo firewall-cmd --permanent --zone=public --add-port=80/tcp
$ sudo firewall-cmd --permanent --zone=public --add-port=443/tcp If you're using Ubuntu Linux, verify that your firewall rules match the following settings.

Ubuntu Linux View Firewall Rules:

$ sudo ufw status verbose Permanently Add Rules:

$ sudo ufw allow 80 $ sudo ufw allow 443 If you use Windows Firewall on a Windows server, then see Add or Edit Firewall Rule in the Microsoft documentation.

Make sure that your custom server is accessible over the internet

If CloudFront is unable to access your origin over the internet, then CloudFront returns a 504 error. To check that internet traffic can connect to your origin, confirm that your HTTP and HTTPS rules match the following settings.

For HTTPS Traffic:

nc -zv OriginDomainName/IP_Address 443 telnet OriginDomainName/IP_Address 443 For HTTP Traffic:

nc -zv OriginDomainName 80 telnet OriginDomainName 80 504: "The request could not be satisfied" error Measure the typical and high-load latency of your web application

Use the following command to measure the responsiveness of your web application:

curl -w "DNS Lookup Time: %{time_namelookup} \nConnect time: %{time_connect} \nTLS Setup: %{time_appconnect} \nRedirect Time: %{time_redirect} \nTime to first byte: %{time_starttransfer} \nTotal time: %{time_total} \n" -o /dev/null https://www.example.com/yourobject Note: For https://www.example.com/yourobject, enter the URL of the web application that you're testing.

The output looks similar to the following:

DNS Lookup Time: 0.212319
Connect time: 0.371254
TLS Setup: 0.544175
Redirect Time: 0.000000
Time to first byte: 0.703863
Total time: 0.703994 Depending on the location of the request, troubleshoot the step that shows high latency.

Add resources or tune servers and databases

Make sure that your server has enough CPU, memory, and disk space to handle viewer requests.

Set up persistent connections on your backend server. These connections help latency when connections must be re-established for subsequent requests.

Adjust the CloudFront timeout value

If the previous troubleshooting steps didn't resolve the HTTP 504 errors, then update the time that is specified in your distribution for origin response timeout.