<p>I have two variable containing my namespaces names:</p>
<pre><code>$KUBE_NAMESPACE_DEV =&quot;stellacenter-dev&quot;
$KUBE_NAMESPACE_STAGE &quot;stellacenter-stage-uat&quot; 
</code></pre>
<p>Now I want to modify the following .gitlab-ci.yaml configuration to include the namespace logic:</p>
<pre><code>deploy_dev:
  stage: deploy
  image: stellacenter/aws-helm-kubectl
  before_script:
    - aws configure set aws_access_key_id ${DEV_AWS_ACCESS_KEY_ID}
    - aws configure set aws_secret_access_key ${DEV_AWS_SECRET_ACCESS_KEY}
    - aws configure set region ${DEV_AWS_DEFAULT_REGION}
  script:
    - sed -i &quot;s/&lt;VERSION&gt;/${CI_COMMIT_SHORT_SHA}/g&quot; provider-service.yml     
    - mkdir -p  $HOME/.kube
    - cp $KUBE_CONFIG_DEV $HOME/.kube/config
    - chown $(id -u):$(id -g) $HOME/.kube/config 
    - export KUBECONFIG=$HOME/.kube/config
    - kubectl apply -f ./provider-service.yml 
  only:
    - developer  
</code></pre>
<p>Provide-service.yml file</p>
<pre><code>apiVersion: apps/v1
kind: Deployment
metadata:
  name: provider-app
  namespace: &quot;stellacenter-dev&quot; or &quot;stellacenter-stage-uat&quot; 
  labels:
    app: provider-app
spec:
  replicas: 1
  selector:
    matchLabels:
      app : provider-app
  template:
    metadata:
      labels:
        app: provider-app
    spec:
      containers:
      - name: provider-app
        image: registry.gitlab.com/stella-center/backend-services/provider-service:&lt;VERSION&gt;
        imagePullPolicy: Always
        ports:
          - containerPort: 8092
      imagePullSecrets:
        - name:  gitlab-registry-token-auth

---

apiVersion: v1
kind: Service
metadata:
  name:  provider-service
  namespace: &quot;stellacenter-dev&quot; &quot;stellacenter-stage-uat&quot; 
spec:
  type: NodePort
  selector:
    app:  provider-app
  ports:
  - port:  8092
    targetPort:  8092
</code></pre>
<p>I don't know how to integrate the variables and the values correctly . I'm facing the error while I run pipeline.Kindly help me to sort it out.</p>

<p>You can remove the <code>namespace: NAMESPACE</code> from the manifest, and apply the resource in a namespace using the commandline.</p>
<pre><code>- kubectl apply -f ./provider-service.yml -n ${KUBE_NAMESPACE_DEV}
- kubectl apply -f ./provider-service.yml -n ${KUBE_NAMESPACE_STAGE}
</code></pre>
