Available in editions:  CE, BE, SE, SE+, EE

The module lifecycle stageGeneral Availability

The module has 2 alerts.

The module is enabled by default in the Default bundle. The module is disabled by default in the following bundles: Managed, Minimal.

How to explicitly enable the module…

You may explicitly enable or disable the module in one of the following ways:

  • Via Deckhouse web UI. In the “System” → “System Management” → “Deckhouse” → “Modules” section, open the chrony module and enable (or disable) the “Module enabled” toggle. Save changes.

    Example:

    Module enable/disable interface

  • Via Deckhouse CLI (d8).

    Use the d8 system module enable command for enabling, or d8 system module disable command for disabling the module (you need Deckhouse CLI (d8), configured to work with the cluster).

    Example of enabling the module:

    d8 system module enable chrony
    
  • Using ModuleConfig chrony.

    Set spec.enabled to true or false in ModuleConfig chrony (create it if necessary);

    Example of a manifest to enable module chrony:

    apiVersion: deckhouse.io/v1alpha1
    kind: ModuleConfig
    metadata:
      name: chrony
    spec:
      enabled: true
    

How to configure the module…

You can configure the module in one of the following ways:

  • Via Deckhouse web UI.

    In the “System” → “System Management” → “Deckhouse” → “Modules” section, open the chrony module and enable the “Advanced Settings” switch. Fill in the required fields in the “Configuration” tab or specify the module settings in YAML format on the “YAML” tab, excluding the settings section. Save the changes.

    Example:

    Module Setup Interface

    You can also edit the ModuleConfig object chrony on the “YAML” tab in the module settings window (“System” → “System Management” → “Deckhouse” → “Modules”, open the module chrony) by specifying the schema version in the spec.version parameter and the necessary module parameters in the spec.settings section.

  • Via Deckhouse CLI (d8) (requires Deckhouse CLI (d8) configured to work with the cluster).

    Edit the existing ModuleConfig chrony (for more details on configuring Deckhouse, see the documentation) by executing the following command:

    d8 k edit mc chrony
    

    Make the necessary changes in the spec.settings section. If necessary, specify the schema version in the spec.version parameter. Save the changes.

    You can also create a file with manifest for ModuleConfig chrony using the example below. Fill in the spec.settings section with the required module parameters. If necessary, specify the schema version in the spec.version parameter.

    Apply the manifest using the following command (indicate the manifest file name):

    d8 k apply -f <FILENAME>
    

    Example of a manifest for ModuleConfig chrony:

    apiVersion: deckhouse.io/v1alpha1
    kind: ModuleConfig
    metadata:
      name: chrony
    spec:
      version: 1
      enabled: true
      settings: # Module parameters from the "Parameters" section below.
    

Parameters

Schema version: 1

  • settings
    object
    • settings.ntpServers
      array of strings

      NTP servers to sync.

      Default: ["pool.ntp.org"]

      Examples:

      ntpServers:
      - pool.ntp.org
      
      ntpServers:
      - pool.ntp.org
      - ntp.ubuntu.com
      - time.google.com
      

An example of the configuration

apiVersion: deckhouse.io/v1alpha1
kind: ModuleConfig
metadata:
  name: chrony
spec:
  enabled: true
  settings:
    ntpServers:
      - pool.ntp.org
      - ntp.ubuntu.com
      - time.google.com
  version: 1