Module: MovableInk::AWS::EKS

Included in:
MovableInk::AWS
Defined in:
lib/movable_ink/aws/eks.rb

Instance Method Summary collapse

Instance Method Details

#eks(region: my_region) ⇒ Object

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# File 'lib/movable_ink/aws/eks.rb', line 7

def eks(region: my_region)
  @eks_client ||= {}
  @eks_client[region] ||= Aws::EKS::Client.new(region: region)
end

#generate_kubeconfig(region: my_region, cluster_name:) ⇒ Object

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# File 'lib/movable_ink/aws/eks.rb', line 12

def generate_kubeconfig(region: my_region, cluster_name:)
  client = eks(region: region)

  resp = run_with_backoff do
    begin
      client.describe_cluster({ name: cluster_name })
    rescue Aws::EKS::Errors::ResourceNotFoundException
      return nil
    end
  end

  cluster_arn = resp.cluster.arn
  cluster_server_address = resp.cluster.endpoint
  cluster_certificate_authority_data = resp.cluster.certificate_authority.data

  {
    'apiVersion' => 'v1',
    'clusters' => [{
      'cluster' => {
        'certificate-authority-data' => cluster_certificate_authority_data,
        'server' => cluster_server_address,
      },
      'name' => cluster_arn
    }],
    'contexts' => [{
      'context' => {
        'cluster' => cluster_arn,
        'user' => cluster_arn,
      },
      'name' => cluster_arn,
    }],
    'current-context' => cluster_arn,
    'kind' => 'Config',
    'preferences' => {},
    'users' => [{
      'name' => cluster_arn,
      'user' => {
        'exec' => {
          'apiVersion' => 'client.authentication.k8s.io/v1alpha1',
          'args' => ['--region', region, 'eks', 'get-token', '--cluster-name', cluster_name],
          'command' => 'aws',
        }
      }
    }]
  }.to_yaml
end