[Ingress] curl: connection refused

thomas.bucaioni · May 2022

Hello,
After applying the linkerd injection (Lab 11.2, item 11), curl gets a "connection refused" on the service Ip, but not on the pod Ip:

usercp@cpnode:~/ingress-nginx$ kubectl get svc | grep ingress
myingress-ingress-nginx-controller             LoadBalancer   10.108.235.235   <pending>     80:31860/TCP,443:32260/TCP   39m
myingress-ingress-nginx-controller-admission   ClusterIP      10.105.96.191    <none>        443/TCP                      39m
usercp@cpnode:~/ingress-nginx$ curl -H "Host: www.external.com" http://10.108.235.235
curl: (7) Failed to connect to 10.108.235.235 port 80: Connection refused
usercp@cpnode:~/ingress-nginx$ k get po -o wide | grep ingress
myingress-ingress-nginx-controller-qmdt6   1/2     Running   7 (52s ago)   9m33s   192.168.0.112   wnode   <none>           <none>
usercp@cpnode:~/ingress-nginx$ curl -H "Host: www.external.com" http://192.168.0.74
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
...

and regularly, the pod is in CrashLoopBackOff state:

usercp@cpnode:~/ingress-nginx$ k get po -o wide | grep ingress
myingress-ingress-nginx-controller-qmdt6   1/2     CrashLoopBackOff   7 (2m12s ago)   11m     192.168.0.112   wnode   <none>           <none>

It seems it happened too on the nginx-one deployment in Lab 11.1, but after deleting and restarting the deployment it went well

oleksazhel · May 2022

@thomas.bucaioni Had a similar issue with linkerd 2.11.2. You can check it with linkerd version.

How to fix

kubectl get ds -o yaml | linkerd uninject - | kubectl apply -f -
kubectl get ds myingress-ingress-nginx-controller -o yaml | linkerd inject --ingress --skip-inbound-ports 443 --skip-outbound-ports 443 - | kubectl apply -f -

Looks like a bug, but it works with this workaround suggested by @chrispokorni in https://forum.linuxfoundation.org/discussion/861348/exercise-11-2-ingress-controller-getting-error-503-service-temporarily-unavailable#latest

thomas.bucaioni · May 2022

Hi @oleksazhel

Thank you for your help

[Ingress] curl: connection refused

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