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Execute commands from the running container

This directory contains the example of how to run a command inside a running container by buildin function ExecInPod provided by e2e framework.

How to use ExecInPod function?

First of all there should be a pod with a proper container, which has Running status to execute commands from it. To meet status condition within a test either wait.For() or resources.Watch() may be used.

To invoke a function it is required to pass the following parameters:

Param Type Description
namespaceName string Namespace name, where the pod is running
podName string Pod name
containerName string Container name
command [] string Command to be executed in container
stdout *bytes.Buffer Buffer pointer to read from in case of successful command execution
stderr *bytes.Buffer Buffer pointer to read from in case a command failed

What does this test do?

  1. Create a Kind cluster with a random name with exectest- as the cluster name prefix.
  2. Create a custom namespace with my-ns as the prefix.
  3. Create nginx deployment with one replica.
  4. Wait for the deployment to be Available.
  5. Use curl to request the main page of Wikipedia.org by ExecInPod function.
  6. Check is a status code equals 200.

How to run the tests

go test -v .