I have successfully setup AWX on AWS EKS using AWX Operator with these two manifests:
kustomization.yaml
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
generatorOptions:
disableNameSuffixHash: true
secretGenerator:
- 
name: awx-postgres-configuration 
 type: Opaque
 literals:
- 
host=awx-postgres 
- 
port=5432 
- 
database=awx 
- 
username=awx 
- 
password=Ansible123! 
- 
type=managed 
- 
name: awx-admin-password 
 type: Opaque
 literals:
- 
password=Ansible123! 
resources:
Find the latest tag here: https://github.com/ansible/awx-operator/releases
Set the image tags to match the git version from above
images:
- name: quay.io/ansible/awx-operator
 newTag: 0.20.0
Specify a custom namespace in which to install AWX
namespace: awx
awx.yaml