I'm new to Kubernetes and as a tutorial for myself I've been working on deploying a basic project to Kubernetes with helm (v3). I have an image in AWS's ECR as well as a local helm chart for this project. However, I am struggling to run my image with Kubernetes.

My image is set up correctly. If I try something like docker run my_image_in_ecr locally it behaves as expected (after configuring my IAM access credentials locally). My helm chart is properly linted and in my image map, it specifies:

image:
  repository: my_image_in_ecr
  tag: latest
  pullPolicy: IfNotPresent

When I try to use helm to deploy though, I'm running into issues. My understanding is to run my program with helm, I should:

1. Run helm install on my chart

2. Run the image inside my new kubernetes pod

But when I look at my kubernetes pods, it looks like they never get up and running.

hello-test1-hello-world-54465c788c-dxrc7           0/1     ImagePullBackOff    0          49m
hello-test2-hello-world-8499ddfb76-6xn5q           0/1     ImagePullBackOff    0          2m45s
hello-test3-hello-world-84489658c4-ggs89           0/1     ErrImagePull        0          15s

The logs for these pods look like this:

Error from server (BadRequest): container "hello-world" in pod "hello-test3-hello-world-84489658c4-ggs89" is waiting to start: trying and failing to pull image

Since I don't know how to set up imagePullSecrets properly with Kubernetes I was expecting this to fail. But I was expecting a different error message such as bad auth credentials.

1. How can I resolve the error in image pulling? Is this issue not even related to the fact that my image is in ecr?
2. How can I properly set up credentials (such as imagePullSecrets) to authorize pulling the image from ecr? I have followed some guides such as this one and this one but am confused on how to tranlate this information into a proper authorization configuration for ecr.