> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/harness-platform/knowledge-base-and-faqs/articles/mount-custom-cert-with-delegate.md).

# Mount custom cert with Delegate through ConfigMap

### Mount custom cert in Delegate through ConfigMap <a href="#mount-custom-cert-in-delegate-through-configmap" id="mount-custom-cert-in-delegate-through-configmap"></a>

This knowledge base article walks you through how you can mount the custom cert with delegate through ConfigMap.

### Steps to perform <a href="#steps-to-perform" id="steps-to-perform"></a>

1. Cert file as base 64 encoded or decoded .pem or .crt

   Example: test-cer.pem

```
   -----BEGIN CERTIFICATE-----
XXXXXXXXXXXXXXXXXXXXXXXXXXX
-----END CERTIFICATE-----
```

2. Create ConfigMap through Cert file

```
kubectl create configmap my-config --from-file=path/test-cer.pem
```

3. Now need to configure the volumes & volumeMount in the Deployment spec of Delegate Yaml

```
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    harness.io/name: cert-test
  name: cert-test
  namespace: test-ng
spec:
  replicas: 1
  minReadySeconds: 120
  selector:
    matchLabels:
      harness.io/name: cert-test
  template:
    metadata:
      labels:
        harness.io/name: cert-test
      annotations:
        prometheus.io/scrape: "true"
        prometheus.io/port: "3460"
        prometheus.io/path: "/api/metrics"
    spec:
      terminationGracePeriodSeconds: 600
      restartPolicy: Always
      volumes:
      - name: my-config
        configMap: 
          name: my-config
      containers:
      - image: harness/delegate:23.06.79503
        volumeMounts: 
        - name: config
          mountPath: /opt/test/test-cer.pem
```

4. Now Apply the delegate yaml again

```
kubectl apply -f delegate.yaml
```