Hugo by default usespretty URLs which work out of the box in most hosting environments. Using AWS Cloudfront in front of S3 causes it to not automatically translate pretty urls.
Instead of settinguglyurls = true in your site config, use AWS Lambda to translate for you.
There are example Lambda@Edge functions out there, I usedthis Medium post and an oldAWS Compute Blog to build my function.
'use strict';constpath=require('path')exports.handler=(event,context,callback)=>{// Extract the request from the CloudFront event that is sent to Lambda@Edgevarrequest=event.Records[0].cf.request;// Extract the URI from the requestvarolduri=request.uri;// If last element of old uri doesn't contain a .html extension, assume it's a directory and append a '/'if(!olduri.match(/\/$/)&&path.basename(olduri).match(/^[^\.]+$/)){olduri=olduri+'/';}// Match any '/' that occurs at the end of a URI. Replace it with a default indexvarnewuri=olduri.replace(/\/$/,'\/index.html');// Log the URI as received by CloudFront and the new URI to be used to fetch from originconsole.log("Old URI:"+olduri);console.log("New URI:"+newuri);// Replace the received URI with the URI that includes the index pagerequest.uri=newuri;// Return to CloudFrontreturncallback(null,request);};The main gotcha is you may get this weird looking error when publishing the function if you are using the web interface.
Your function's execution role must be assumable by the edgelambda.amazonaws.com service principal.
Lambda can create an IAM role for you, but you still have to go into the newly created role and edit theTrust relationships policy document to allow Lambda@Edge access.
{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Principal": { "Service": [ "lambda.amazonaws.com", "edgelambda.amazonaws.com" ] }, "Action": "sts:AssumeRole" } ]}After editing the policy document for trust relationships, REFRESH the tab/window you are publishing the function from to force it to see the new permissions.
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