[Home](./index.md) > [ibm-cloud-sdk-core](./ibm-cloud-sdk-core.md) > [ContainerAuthenticator](./ibm-cloud-sdk-core.containerauthenticator.md) ## ContainerAuthenticator class The ContainerAuthenticator will read a compute resource token from the file system and use this value to obtain a bearer token from the IAM token server. When the bearer token expires, a new token is obtained from the token server. The bearer token will be sent as an Authorization header in the form: Authorization: Bearer <bearer-token> **Signature:** ```typescript export declare class ContainerAuthenticator extends IamRequestBasedAuthenticator ``` **Extends:** [IamRequestBasedAuthenticator](./ibm-cloud-sdk-core.iamrequestbasedauthenticator.md) ## Constructors

Constructor	Modifiers	Description
[(constructor)(options)](./ibm-cloud-sdk-core.containerauthenticator._constructor_.md)		Create a new ContainerAuthenticator instance.

## Properties

Property	Modifiers	Type	Description
[tokenManager](./ibm-cloud-sdk-core.containerauthenticator.tokenmanager.md)	`protected`	[ContainerTokenManager](./ibm-cloud-sdk-core.containertokenmanager.md)

## Methods

Method	Modifiers	Description
[authenticationType()](./ibm-cloud-sdk-core.containerauthenticator.authenticationtype.md)		Returns the authenticator's type ('container').
[getRefreshToken()](./ibm-cloud-sdk-core.containerauthenticator.getrefreshtoken.md)		Return the most recently stored refresh token.
[setCrTokenFilename(crTokenFilename)](./ibm-cloud-sdk-core.containerauthenticator.setcrtokenfilename.md)		Setter for the filename of the compute resource token.
[setIamProfileId(iamProfileId)](./ibm-cloud-sdk-core.containerauthenticator.setiamprofileid.md)		Setter for the "profile\_id" parameter to use when fetching the bearer token from the IAM token server.
[setIamProfileName(iamProfileName)](./ibm-cloud-sdk-core.containerauthenticator.setiamprofilename.md)		Setter for the "profile\_name" parameter to use when fetching the bearer token from the IAM token server.