I ve run into a problem with the Go SDK for AWS I have code Pulumi Community #golang

I’ve run into a problem with the Go SDK for AWS. I...

salmon-account-74572

07/02/2021, 6:25 PM

I’ve run into a problem with the Go SDK for AWS. I have code that creates a VPC, public and private subnets, route tables, Internet gateway, etc. It also allocates an EIP for a NAT gateway (for the private subnets). If I run

pulumi preview

I get this:

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panic: sync: WaitGroup is reused before previous Wait has returned
    goroutine 1 [running]:
    sync.(*WaitGroup).Wait(0xc000386258)
    	/usr/local/go/src/sync/waitgroup.go:132 +0xae
    <http://github.com/pulumi/pulumi/sdk/v3/go/pulumi.(*Context).wait|github.com/pulumi/pulumi/sdk/v3/go/pulumi.(*Context).wait>(0xc000386140, 0x0, 0x0)
    	/Users/slowe/Code/Go/pkg/mod/github.com/pulumi/pulumi/sdk/v3@v3.4.0/go/pulumi/context.go:156 +0x50
    <http://github.com/pulumi/pulumi/sdk/v3/go/pulumi.RunWithContext(0xc000386140|github.com/pulumi/pulumi/sdk/v3/go/pulumi.RunWithContext(0xc000386140>, 0x1c3a4c8, 0xc0000440ef, 0xc)
    	/Users/slowe/Code/Go/pkg/mod/github.com/pulumi/pulumi/sdk/v3@v3.4.0/go/pulumi/run.go:112 +0x2a6
    <http://github.com/pulumi/pulumi/sdk/v3/go/pulumi.RunErr(0x1c3a4c8|github.com/pulumi/pulumi/sdk/v3/go/pulumi.RunErr(0x1c3a4c8>, 0x0, 0x0, 0x0, 0x0, 0x0)
    	/Users/slowe/Code/Go/pkg/mod/github.com/pulumi/pulumi/sdk/v3@v3.4.0/go/pulumi/run.go:84 +0x23f
    <http://github.com/pulumi/pulumi/sdk/v3/go/pulumi.Run(0x1c3a4c8|github.com/pulumi/pulumi/sdk/v3/go/pulumi.Run(0x1c3a4c8>, 0x0, 0x0, 0x0)
    	/Users/slowe/Code/Go/pkg/mod/github.com/pulumi/pulumi/sdk/v3@v3.4.0/go/pulumi/run.go:41 +0x59
    main.main()
    	/Users/slowe/Code/Repos/lab/infra/aws-infra-go/main.go:14 +0x3e
    exit status 2

    error: an unhandled error occurred: program exited with non-zero exit code: 1

If I comment out the NAT gateway code (which consumes the EIP), then the error goes away. This worked in previous versions of the SDK. I can share my code upon request, in the event that I’m doing something incorrectly.

salmon-account-74572

07/02/2021, 6:33 PM

The resolution is to use

pulumi.DependsOn

to add an explicit dependency on the Elastic IP. I don’t know if this is an expected change from previous versions of the SDK, or if this reflects a potential error/bug in the SDK.

billowy-army-68599

07/02/2021, 7:04 PM

Can you share your code?

salmon-account-74572

07/02/2021, 7:23 PM

@billowy-army-68599 Yes, I’ll upload it shortly.

salmon-account-74572

07/02/2021, 7:23 PM

It would seem that

pulumi.DependsOn

isn’t necessarily the fix; the error just occurred again.

salmon-account-74572

07/02/2021, 7:24 PM

Here’s my code.

main.go

salmon-account-74572

07/02/2021, 7:41 PM

Updating to the latest version of the AWS provider didn’t help. Nor did updating my

go.mod

go 1.16

(this is on an ARM64 M1-based Mac).

salmon-account-74572

07/02/2021, 7:45 PM

The error is intermittent; sometimes it happens and sometimes it doesn’t. I haven’t yet found a way to reliably reproduce it.

salmon-account-74572

07/02/2021, 8:47 PM

It would appear this is related: https://github.com/pulumi/pulumi/issues/7275

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