Sporadic error copying from local connection to remote stream ... connection reset by peer"

[thockin]

Expected Behavior

No error

Actual Behavior

$ kubectl ate create actor ctr2 --template ate-demo-counter/counter
NAMESPACE          TEMPLATE   ID     STATUS             ATEOM POD   ATEOM IP   VERSION
ate-demo-counter   counter    ctr2   STATUS_SUSPENDED   <none>                 1
E0520 15:40:33.154830 3507355 portforward.go:502] "Unhandled Error" err="error copying from local connection to remote stream: writeto tcp4 127.0.0.1:42521->127.0.0.1:42648: read tcp4 127.0.0.1:42521->127.0.0.1:42648: read: connection reset by peer" logger="UnhandledError"

Steps to Reproduce the Problem

1. hack/create-kind-cluster.sh && hack/install-ate-kind.sh --deploy-ate-system && hack/install-ate-kind.sh --deploy-demo-counter && go install ./cmd/kubectl-ate
2. kubectl ate create actor ctr1 --template ate-demo-counter/counter
3. kubectl ate create actor ctr2 --template ate-demo-counter/counter

NOTE: I did not run port-forward

Specifications

• Version: HEAD
• Platform: Linux

[BenTheElder]

We don't currently control the kind or kubernetes version in repo, I assume this is kind v0.31.0 and the default v1.35 image?

[thockin]

yes and yes

The reason I raise this here is that it's not at all clear why I would get a "portforward.go" error when I didn't set up any port forwarding.

[BenTheElder]

The reason I raise this here is that it's not at all clear why I would get a "portforward.go" error when I didn't set up any port forwarding.

kubectl ate uses port forwarding internally:

substrate/cmd/kubectl-ate/pkg/client/builder.go

Line 157 in b80031d

SubResource("portforward")

[thockin]

You and I may understand that, but our users should not need to. Anyway, is this a known thing?

…

On Wed, May 20, 2026 at 9:48 PM Benjamin Elder ***@***.***> wrote: *BenTheElder* left a comment (agent-substrate/substrate#26) <#26 (comment)> The reason I raise this here is that it's not at all clear why I would get a "portforward.go" error when I didn't set up any port forwarding. kubectl ate uses port forwarding internally: https://github.com/agent-substrate/substrate/blob/b80031d260959b1fc5c6f61e3099fe2a6d368af1/cmd/kubectl-ate/pkg/client/builder.go#L157 — Reply to this email directly, view it on GitHub <#26 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABKWAVCHZAUCOPFGKEUH3NT432DDRAVCNFSM6AAAAACZGYXN4CVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHM2DKMBUHEYDENBSGY> . You are receiving this because you authored the thread.Message ID: <agent-substrate/substrate/issues/26/4504902426 ***@***.*** com>