为什么AWS Elastic beantalk无法构建我的应用程序？

Question

I have an app written in Go, which I attempted to deploy to EB. When trying to access it, I get an Error 502 from nginx, presumably because the app is not running.

Looking at logs, I get a lot of errors like

14:01:29 build.1 | application.go:10:2: cannot find package "github.com/aws/aws-sdk-go/aws" in any of:
14:01:29 build.1 |  /opt/elasticbeanstalk/lib/go/src/github.com/aws/aws-sdk-go/aws (from $GOROOT)
14:01:29 build.1 |  /var/app/current/src/github.com/aws/aws-sdk-go/aws (from $GOPATH)

Despite the fact, that I have all of my dependencies included in the application bundle under a vendor subdirectory. How come EB does not use vendoring? According to the dashboard, it is running Go 1.9, so vendoring should be supported.

Answer 1

You need to set your GOPATH in your EBS to the root of your project directory, assuming there is a src directory where your vendor directory is located.

For instance, pretend this is your project structure:

app/
    src/
        vendor/

And pretend that project is located in ~/home, which makes its location ~/home/app.

Then your GOPATH should be set to ~/home/app. Go will attempt to access the dependencies through $GOPATH/src/vendor.

---

But if this were the kind of structure you were using before, then you would need to have your GOPATH updated during local development as well, so if you aren't already doing that then I imagine you're using a different kind of setup... this solution, however, will work as long as your project is structured as I described above.