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Secrets management

With secrets management, you can configure the agent and on-host integrations to use sensitive data (such as passwords) without having to write them as plain text into the configuration files. Currently, Hashicorp Vault, AWS KMS, CyberArk, New Relic CLI obfuscation and custom commands are supported.

Learn more in this NerdBytes video (5:12 minutes).

Define secrets

To use secrets in a configuration YAML file:

  1. Define a variables section, where each entry is a name for a secret object.
  2. In each entry, include the source of the secret and the proper configuration to retrieve those secrets.
  3. In the general configuration section, set ${variable.property} placeholders that will be automatically replaced by the properties of the secret object. The secret object can be defined as a simple string or json object.

Important

If the secrets retrieval fails, the integration won't be executed, as the infrastructure agent does not have all the data it requires to execute.

For example, the following configuration will retrieve an object named creds from Vault (you can define the object's name for the secret.) Let's assume that the stored object is a valid JSON with a property named user and another property named password. We want to use them to set the basic HTTP credentials of the status_url property from an Nginx on-host integration:

variables:
creds:
vault:
http:
url: http://my.vault.host/v1/newengine/data/secret
headers:
X-Vault-Token: my-vault-token
integrations:
- name: nri-nginx
env:
METRICS: "true"
STATUS_URL: http://${creds.user}:${creds.password}@example.com/status
STATUS_MODULE: discover
REMOTE_MONITORING: true
interval: 30s
labels:
env: production
role: load_balancer

Tip

Both simple strings and valid JSON objects can be retrieved from variables.
When using JSON objects make sure both keys and values are enclosed with double-quotes.

Using environment variables

Environment variables can be used into the variables section with the {{MY_ENV_VAR}} notation. When doing so, environment variables are expanded and their value is replaced at runtime.

Use this method to avoid having sensitive values such as tokens or obfuscation keys included in the configuration file.

When using environment variables in on-host integration configuration files the passthrough_environment setting must be defined.

Secrets variables

Define secrets in each configuration under a variables section. Each entry is a user-defined secret name that will store the properties of the retrieved secrets. Each variable can contain the following properties:

YAML key

Description

ttl

Type: String

Amount of time before a secret is refreshed. This can be a number followed by a time unit (s, m or h).

Examples: 30s, 10m, 1h

Default: 1h

aws-kms

AWS KMS secret retrieval configuration

vault

Vault secret retrieval configuration

cyberark-cli

CyberArk command line interface configuration

cyberark-api

CyberArk REST API configuration

obfuscated

New Relic CLI obfuscation

AWS KMS secrets

To retrieve your secrets from Amazon KMS, you can set the following properties in your aws-kms section. Not all fields are required. For example, you will need either data, file, or http to provide the encoded KMS string.

YAML key

Description

data

Type: String

Base64 encoded KMS string to decrypt

file

Type: String

Path to file containing Base64 encoded KMS string to decrypt

http

Type: YAML properties

HTTP configuration to use to request Base64 encoded KMS string to decrypt. For more information, see Vault http.

credential_file

Type: String

Path to AWS credentials file

config_file

Type: String

Path to AWS config file

region

Type: String

AWS KMS region

type

Type: String (plain, equal, or json)

Secret value format:

  • plain: a raw string to be stored directly into the destination variable.

  • equal: a key=property one-line string to be stored as object properties into the destination variable.

  • json: a JSON object to be stored as properties into the destination variable.

    Secrets of type plain or json use dot notation; for example, ${mysecret.nestedkey}.

The following example will allow retrieving a plain password string from AWS KMS. It must be decrypted from the provided data encoded string.

variables:
myPassword:
aws-kms:
data: T0hBSStGTEVY
region: ap-southeast-2
credential_file: "./my-aws-credentials-file"
config_file: "./my-aws-config-file"
type: plain

Vault secrets

Vault must enable an http field containing the HTTP configuration used to connect to Vault. The http entry can contain the following entries:

YAML key

Description

url

Type: String

URL to request data from

tls_config

Type: YAML properties

Use the TLS configuration properties

headers

Type: YAML map

Request headers

tls_config properties

Important

Secrets must use dot notation, for example, ${mysecret.nestedkey}.

YAML key

Description

enable

Type: Boolean

Enable TLS

Default: false

insecure_skip_verify

Type: Boolean

Skip verifying server’s certificate chain and host

Default: false

min_version

Type: UInt16

The minimum SSL/TLS version that is acceptable

Default: 0 (which uses TLS version 1.0)

max_version

Type: UInt16

The maximum SSL/TLS version that is acceptable

Default: 0 (which uses TLS version 1.3)

ca

Type: String

TLS certificate

""

The following example will retrieve a secret using a Vault token from a secured server, and skip the server certificates verification:

variables:
mydata:
vault:
http:
url: https://my.vault.host/v1/newengine/data/secret
headers:
X-Vault-Token: my-vault-token
tls_config:
insecure_skip_verify: true

CyberArk command line interface

To retrieve secrets from the CyberArk command line interface (CLI) use the following configuration, all keys are required

YAML Key

Description

cli

Type: string

Full path to the CyberArk CLI executable

Default: ""

app-id

Type: string

Application id of the secret holder

Default: ""

safe

Type: string

Safe containing the secret

Default: ""

folder

Type: string

Folder containing the secret

Default: ""

object

Type: string

The object the secret is associated with

Default: ""

The following example will retrieve a CyberArk secret using the command line interface:

variables:
credentials:
cyberark-cli:
cli: /full/path/to/clipasswordsdk
app-id: my-appid
safe: my-safe
folder: my-folder
object: my-object

CyberArk REST API

To retrieve secrets using the CyberArk REST API there must be a http key containing the HTTP configuration. The http key contains these sub-keys, only url is required:

YAML key

Description

url

Type: String

URL to request data from, this key is required

Default: none

tls_config

Type: YAML properties

Use the TLS configuration properties

headers

Type: YAML map

Request headers

The following example will retrieve a secret using the CyberArk REST API, skipping server certificate verification:

variables:
credentials:
cyberark-api:
http:
url: https://hostname/AIMWebService/api/Accounts?AppID=myAppID&Query=Safe=mySafe;Object=myObject
tls_config:
insecure_skip_verify: true

New Relic CLI Obfuscation

Important

We recommend using any of the supported secrets providers instead of the simple obfuscation when possible.

See our guidelines below to define environment variables to avoid having the obfuscation key in configuration files.

Use Powershell on Windows hosts, rather than the Command Prompt window, since the Command Prompt window can handle quotation marks in unexpected ways.

Tip

Infrastructure agent 1.14.0 or above is required

You can use the New Relic CLI obfuscate command to obscure sensitive information in the infrastructure agent or any on-host integration configuration file.

Steps:

newrelic agent config obfuscate --value '<plain_text_config_value>' --key '<obfuscation_key>'
  • Copy the result of the cli command into the text argument in the obfuscated section as shown in the examples below.
  • You can obfuscate JSON blocks if you need to reference multiple values in your configuration YML file. Note that you may need to escape the quotation marks "" with backslashes on Windows hosts. For example: '{\"attribute\":\"value\".... In addition, use Powershell on Windows hosts, rather than the Command Prompt window, since the Command Prompt window can handle quotation marks in unexpected ways.
newrelic agent config obfuscate --value '{"attribute":"value","attribute2":"value2"}' --key '<obfuscation_key>'

YAML key

Description

key

Type: String

The string used when obfuscating the clear-text value using New Relic CLI

Default: none

secret

Type: String

The output of the newrelic-cli command

Default: none

Integrations configuration example

The following example will allow retrieving the Nginx user and password that has been obfuscated using the New Relic CLI. This example uses dot notation when retrieving the credentials, since the obfuscated value was a JSON block:

variables:
creds:
obfuscated:
key: 'random_key_used_in_cli'
secret: 'obscured_output_from_cli'
integrations:
- name: nri-nginx
env:
METRICS: "true"
STATUS_URL: http://${creds.user}:${creds.password}@example.com/status
STATUS_MODULE: discover
REMOTE_MONITORING: true
interval: 30s
labels:
env: production
role: load_balancer

It's recommended to use environment variables for the obfuscation arguments as shown in the example below:

variables:
creds:
obfuscated:
key: {{OBFUSCATION_KEY}}
secret: {{OBFUSCATION_TEXT}}
integrations:
- name: nri-nginx
env:
METRICS: "true"
STATUS_URL: http://${creds.user}:${creds.password}@example.com/status
STATUS_MODULE: discover
REMOTE_MONITORING: true
interval: 30s
labels:
env: production
role: load_balancer

Agent configuration example

This example allows retrieving a string that contains the proxy details (user, password and host):

variables:
obfuscated_proxy:
obfuscated:
key: 'random_key_used_in_cli'
secret: 'obscured_output_from_cli'
proxy: ${obfuscated_proxy}

Custom Commands

Important

The command configuration requires infrastructure agent 1.41.0 or greater. Make sure the agent has the required permissions to execute the configured command based on your environment requirements.

You can load agent or integrations configurations from custom commands available in the same host. The infrastructure agent will detect when configurations should initially be loaded from a command output and keep values updated based on a ttl refresh time.

The expected output format for the commmand is either JSON or String:

JSON

The following JSON structure is expected as the main output (stdout) from the defined command:

{
"data": {
"myKey": "myValue"
},
"ttl": "24h"
}
  • A top-level data field is required.
  • A top-level ttl field is required.

It can then be used in any configuration file using the ${myVariable.key} notation. In the following example, a my-custom-auth command is executed with a domain parameter then loading the resulting token as an agent configuration:

variables:
myToken:
command:
path: '/path/to/my-custom-auth-json'
args: ["--domain", "myDomain", "--other_param", "otherValue"]
ttl: 24h
# my-custom-auth output example: {"data":{"token":"XXXXYYYYZZZZ"}, "ttl": "24h"}
# the `token` result can be included as ${myToken.token} in any configuration.
http:
headers:
"Proxy-Authorization": ${myToken.token}

String (text/plain)

If the command output is a plain string, then it can be referenced in the configuration using the ${myVar} notation.

Example:

variables:
myToken:
command:
path: '/path/to/my-custom-auth-string'
args: ["arg1", "arg2"]
ttl: 24h
# my-custom-auth output example: "XXXXYYYYZZZZ"
# the `token` result can be included as ${myToken} on any configuration.
http:
headers:
"Proxy-Authorization": ${myToken}
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