Add Google KMS as a Harness Secrets Manager

Updated 6 days ago by Rashmi Nanda Sahoo

You can use Google Cloud Key Management Service (Cloud KMS) as a Harness Secrets Manager. Once Google KMS is added as a Secrets Manager, you can create encrypted secrets in Google KMS and use them in your Harness account.

For details on Harness Secrets Managers, see Harness Secrets Manager Overview.

This topic describes how to add a Google KMS Secrets Manager in Harness.

In this topic:

Before You Begin

Step 1: Add Secrets Manager

This topic assumes you have a Harness Project set up. If not, see Create Organizations and Projects.

You can add a Connector from any module in your Project in Project setup, or in your Organization or Account Resources.

In Connectors, click Connector.

In Secrets Manager, click GCP KMS under Secret Managers.

The GCP Key Management Service settings appear.

In Name, enter a name for your Secrets Manager.  You will use this name to select this Secrets Manager when adding or selecting a secret.

Enter a description for your Secrets Manager.

Enter tags for your Secrets Manager.

Click Continue.

Step 2: Obtain Google Cloud Symmetric Key

To obtain the values for the Details page, you'll need a Google Cloud Symmetric Key.

In the Google Cloud Console, select your project.

Select Security > Key Management.

Select/create a key ring. Select/create a key in the key ring.

To create resources in this or the next step, see Google Cloud's Creating Symmetric Keys topic.

Open the Actions menu (⋮), then click Copy Resource Name.

A reference to the key is now on your clipboard.

Paste the reference into an editor. You can now copy and paste its substrings into each of the Harness Secrets Manager’s Details settings as shown below.

Step 3: Attach Service Account Key (Credentials) File

Next, you will export your Google Cloud service account key and attach it to the Details page in Harness.

First, you need to grant a Principal the Cloud KMS CryptoKey Encrypter/Decrypter (cloudkms.cryptoKeyEncrypterDecrypter) role.

In Google Cloud Console, go to the IAM page.

Locate the Principal you want to use, and click Edit.

In Edit permissions, add the Cloud KMS CryptoKey Encrypter/Decrypter role and click Save.

See Google Permissions and roles and Cloud's Using Cloud IAM with KMSCloud's Using Cloud IAM with KMS topics.

Next, you'll select the Service Account for that Principal and export its Key file.

In the Google Cloud Console, in IAM & Admin, go to Service Accounts.

Scroll to the service account for the Principal you gave the Cloud KMS CryptoKey Encrypter/Decrypter role. If no service account is present, create one.

Open your service account's Actions ⋮ menu, then select Manage keys.

Select ADD KEY > Create new key.

In the resulting Create private key dialog, select JSON, create the key, and download it to your computer.

Return to the Secret Manager's Details page in Harness.

Under GCP KMS Credentials File, click Create or Select a Secret. You can create a new File Secret  and upload the key file you just exported from Google Cloud.

Click Save and then Continue.

Step 5: Setup Delegates

In Delegates Setup, use Selectors to select any specific Delegates that you want this Connector to use. Click Save and Continue.

Step 6: Test Connection

In Connection Test, click Finish after your connection is successful.


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