Frontend containerPort 8080 is not working and 80 is working in "Tutorial: Dapr Microservices"

[tanaka-takayoshi]

I'm creating a blank issue since I'm not sure which issue type I should select when I want to report the wrong content which is not a typo.

While following the steps in "Tutorial: Dapr Microservices", the application outputs the following error log and the browser shows "ERR_CONNECTION_REFUSED" when visiting the endpoint (http://localhost:8080) in "Step 6. Test your application".

frontend-7f8db677c7-5kd84 frontend [port-forward] connected from localhost:8080 -> ::8080
frontend-7f8db677c7-5kd84 frontend [port-forward] connected from localhost:3500 -> ::3500
frontend-7f8db677c7-5kd84 frontend [port-forward] connected from localhost:50001 -> ::50001
frontend-7f8db677c7-5kd84 frontend [port-forward] connected from localhost:50002 -> ::50002
frontend-7f8db677c7-5kd84 frontend [port-forward] connected from localhost:9090 -> ::9090
backend-646b85f8f-zltfp backend [port-forward] connected from localhost:9090 -> ::9090
backend-646b85f8f-zltfp backend [port-forward] connected from localhost:3000 -> ::3000
backend-646b85f8f-zltfp backend [port-forward] connected from localhost:3500 -> ::3500
backend-646b85f8f-zltfp backend [port-forward] connected from localhost:50001 -> ::50001
backend-646b85f8f-zltfp backend [port-forward] connected from localhost:50002 -> ::50002
E1030 20:10:23.755860   12884 portforward.go:409] an error occurred forwarding 8080 -> 8080: error forwarding port 8080 to pod 1a188b84ed22330a8591e40e1460b0fd72c0f499833b7c73aa8f62e0e5415617, uid : failed to execute portforward in network namespace "/var/run/netns/cni-fcc48644-d9cd-c22c-fc0f-2ca52eb3c5a3": failed to connect to localhost:8080 inside namespace "1a188b84ed22330a8591e40e1460b0fd72c0f499833b7c73aa8f62e0e5415617", IPv4: dial tcp4 127.0.0.1:8080: connect: connection refused IPv6 dial tcp6: address localhost: no suitable address found

Compared with the definition in the sample repository, it seems the container port should be 80.
After changing the value from 8080 to 80, I can see the endpoint of the Dapr app by visiting http://localhost:80 .

backend-646b85f8f-qrr6j backend [port-forward] connected from localhost:3000 -> ::3000
backend-646b85f8f-qrr6j backend [port-forward] connected from localhost:3500 -> ::3500
backend-646b85f8f-qrr6j backend [port-forward] connected from localhost:50001 -> ::50001
backend-646b85f8f-qrr6j backend [port-forward] connected from localhost:50002 -> ::50002
backend-646b85f8f-qrr6j backend [port-forward] connected from localhost:9090 -> ::9090
frontend-748d7865df-74nb6 frontend [port-forward] connected from localhost:50001 -> ::50001
frontend-748d7865df-74nb6 frontend [port-forward] connected from localhost:50002 -> ::50002
frontend-748d7865df-74nb6 frontend [port-forward] connected from localhost:9090 -> ::9090
frontend-748d7865df-74nb6 frontend [port-forward] connected from localhost:80 -> ::80
frontend-748d7865df-74nb6 frontend [port-forward] connected from localhost:3500 -> ::3500
backend-646b85f8f-qrr6j backend Got a new order! Order ID: 81e48920-c6ac-4a0a-a23b-0404383e327e
backend-646b85f8f-qrr6j backend Successfully persisted state.

AB#9971

[willtsai]

Hi @tanaka-takayoshi -- thank you for reporting this issue. I've actually made changes across both docs and samples repos to override the default port 80 to use 8080 instead since 80 gives issues when accessing on localhost. Please see the PRs below for details.

radius-project/samples#748
#926

[tanaka-takayoshi]

HI @willtsai. Thank you for letting me know. I confirm that your PRs fix the problem also in my environment.