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Azure Key Vault
1.3Minimum Jenkins requirement: 2.138.4ID: azure-keyvault

Azure Key Vault Plugin

This plugin enables Jenkins to fetch secrets from Azure Keyvault and inject them directly into build jobs. This works similarly to the Credential Binding Plugin and borrows much from the Hashicorp Vault Plugin. The plugin acts as an Azure Active Directory Application and must be configured with an Application ID and Token. Additional details here.

System Configuration

Via UI

In the Jenkins Configure System page, configure the following three options in the Azure Key Vault Plugin section

  • Key Vault URL - The url where your keyvault resides (e.g. https://myvault.vault.azure.net/)
  • Credential ID - The ID associated with a secret in the Jenkins secret store. Both Microsoft Azure Service Principal and Username/Password types are supported

Via configuration as code

This plugin supports being configured with configuration as code

Example yaml:

credentials:
  system:
    domainCredentials:
      - credentials:
        - azure:
            azureEnvironmentName: "Azure"
            clientId: "d63d9de6-5f7a-48c1-ac1d-e90d4f5e5dcc"
            clientSecret: "${CLIENT_SECRET}"
            description: "An azure service principal"
            id: "service-principal"
            scope: SYSTEM
            subscriptionId: "d63d9de6-5f7a-48c1-ac1d-e90d4f5e5dcc"
            tenant: "d63d9de6-5f7a-48c1-ac1d-e90d4f5e5dcc"

unclassified:
  azureKeyVault:
    keyVaultURL: https://not-a-real-vault.vault.azure.net
    credentialID: service-principal

You can also use a username / password credential:

credentials:
  system:
    domainCredentials:
      - credentials:
        - usernamePassword:
            scope:    SYSTEM
            id:       "service-principal"
            username: client_id
            password: "${CLIENT_SECRET"

Building the Plugin

  • Run mvn package, an .hpi file will be generated in the target folder.

Plugin Usage

Usage in Jenkinsfile

Note that the example echos below will only show *****'s as the plugin redacts secrets found in the build log inside the withAzureKeyvault build wrapper.

Scripted

Snippet generator is fully supported for generating the possible values (along with inline help): Go to any pipeline job and click Pipeline Syntax

Or visit the URL: /job/<job-name>/pipeline-syntax/

Simple version:

node {
    def secrets = [
        [ secretType: 'Certificate', name: 'MyCert00', envVariable: 'CERTIFICATE' ],
        [ secretType: 'Secret', name: 'MySecret00', envVariable: 'SECRET' ],
        [ secretType: 'Secret', name: 'MySecret00', version: '342432lkjhdasjld', envVariable: 'SECRET' ]
    ]

    withAzureKeyvault(secrets) {
        sh 'echo $CERTIFICATE'
        sh 'echo $SECRET'
    }
}

With overrides:

static LinkedHashMap<String, Object> secret(String secretName, String envVar) {
  [ 
    secretType: 'Secret',
    name: secretName,
    version: '342432lkjhdasjld',
    envVariable: envVar
  ]
}

node {
    def secrets = [
        secret('my-secret', 'MY_SECRET')
    ]

    withAzureKeyvault(
            azureKeyVaultSecrets: secrets, 
            keyVaultURLOverride: 'https://mykeyvault.vault.azure.net',
            credentialIDOverride: 'service-principal'
    ) {
        sh 'echo $MY_SECRET'
     }
}

Declarative

Snippet generator is fully supported for generating the possible values (along with inline help): Go to any pipeline job and click Pipeline Syntax -> Declarative Directive Generator

Or visit the URL: /job/<job-name>/directive-generator/

Simple:

pipeline {
    agent any
    stages {
        stage('Build') {
            options {
              azureKeyVault([[envVariable: 'MY_SECRET', name: 'my-secret', secretType: 'Secret']])
            }
            steps {
                sh "echo $SECRET"
            }
        }
    }
}

With overrides:

pipeline {
    agent any
    stages {
        stage('Build') {
            options {
              azureKeyVault(
                credentialID: 'my-sp', 
                keyVaultURL: 'https://my.vault.azure.net', 
                secrets: [
                    [envVariable: 'MY_SECRET', name: 'my-secret', secretType: 'Secret']
                ]
              )
            }
            steps {
                sh "echo $SECRET"
            }
        }
    }
}

Certificate:

pipeline {
    agent any
    stages {
        stage('Build') {
            options {
              azureKeyVault([[envVariable: 'CERT_LOCATION', name: 'my-cert-name', secretType: 'Certificate']])
            }
            steps {
                sh "openssl pkcs12 -in $CERT_LOCATION  -nodes -password 'pass:' -out keyvault.pem"
            }
        }
    }
}

The shell command above will convert the PFX file to a pem key file (also containing the cert), note that Azure Key Vault removes the password on the pfx when you import it, if you're importing it back into Azure somewhere else you may need to convert it to pem and convert back to a pfx with a password.

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