I want to deploy Kubernetes service/deployment yaml files from CodePipeline which is in account A and the EKS cluster is in account B.

I tried the following approach.

On Account A:

• Created assume role policy and attached it to the codebuild role which is associated with the codepipeline.
• Passed the role name from account A in assume role policy which has eks full access.

On Account B:

• Created a role with access to EKS cluster.
• Added the above role arn to the Kubernetes config with system:masters permission.

Buildspec file from Account A:

version: 0.2
run-as: root

phases:

  install:
    commands:
      - echo Installing app dependencies...
      - curl -o kubectl https://amazon-eks.s3.us-west-2.amazonaws.com/1.18.9/2020-11-02/bin/darwin/amd64/kubectl
      - chmod +x ./kubectl
      - mkdir -p $HOME/bin && cp ./kubectl $HOME/bin/kubectl && export PATH=$PATH:$HOME/bin
      - echo 'export PATH=$PATH:$HOME/bin' >> ~/.bashrc
      - source ~/.bashrc
      - echo 'Check kubectl version'
      - kubectl version --short --client
      #- chmod +x eks_cicd/prereqs.sh
      #- sh eks_cicd/prereqs.sh

  build:
    commands:
      - echo Logging in to Amazon EKS...
      - aws sts get-caller-identity
      - aws eks --region $AWS_DEFAULT_REGION update-kubeconfig --name $AWS_CLUSTER_NAME --role-arn $ASSUMEROLE_ARN
      - echo check config
      - kubectl config view --minify
      - echo check kubectl access
      - kubectl get svc

  post_build:
    commands:
      - kubectl apply -f ingress.yml
      #- kubectl rollout restart -f eks_cicd/deployment.yaml

But I'm getting this error:

An error occurred (ResourceNotFoundException) when calling the DescribeCluster operation: No cluster found for name: DevCluster.