The deckhouse module: configuration

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

Set the spec.enabled module parameter to true or false in the ModuleConfig/deckhouse resource (create it, if necessary) to explicitly enable or disable the module, or use the deckhouse-controller module command in the d8-system/deckhouse pod.

Example of enabling the module:

by using the ModuleConfig resource:

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

by using the deckhouse-controller command (you need a kubectl, configured to work with the cluster):

kubectl -ti -n d8-system exec deploy/deckhouse -c deckhouse -- deckhouse-controller module enable deckhouse

Example of disabling the module:

by using the ModuleConfig resource:

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

by using the deckhouse-controller command (you need a kubectl, configured to work with the cluster):

kubectl -ti -n d8-system exec deploy/deckhouse -c deckhouse -- deckhouse-controller module disable deckhouse

The module is configured using the ModuleConfig custom resource named deckhouse (learn more about setting up Deckhouse…).

Example of the ModuleConfig/deckhouse resource for configuring the module:

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

Parameters

Schema version: 1

bundlestring
The Deckhouse bundle defines a set of modules enabled by default.
- Default — the recommended set of modules for cluster operation: monitoring, authorization control, networking and other needs.
- Managed — the bundle aimed at clusters managed by cloud providers (e.g., Google Kubernetes Engine).
- Minimal — the minimum possible bundle option (includes a single module — this one). Note that several basic modules are not included in the set of modules Minimal (for example, the CNI module). Deckhouse with the set of modules Minimal without the basic modules will be able to work only in an already deployed cluster.
Default: "Default"
Allowed values: Default, Minimal, Managed
Example:
```
bundle: Default
```
logLevelstring
Deckhouse logging level.

Default: "Info"
Allowed values: Debug, Info, Error
Example:
```
logLevel: Info
```
nodeSelectorobject
The same as in the Pods’ spec.nodeSelector parameter in Kubernetes.

If the parameter is omitted or false, nodeSelector will be determined automatically.

Cation! Deckhouse will stop working if there is a nonexistent label in nodeSelector. You need to change the values to the correct ones in ModuleConfig/deckhouse and deployment/deckhouse to get Deckhouse back on track.
releaseChannelstring
Desirable Deckhouse release channel (Deckhouse will switch to it when such an opportunity appears).

The order in which the stability of the release channel increases (from less stable to more stable): Alpha, Beta, EarlyAccess, Stable, RockSolid.

Allowed values: Alpha, Beta, EarlyAccess, Stable, RockSolid
Example:
```
releaseChannel: Stable
```
tolerationsarray of objects
The same as in the Pods’ spec.tolerations parameter in Kubernetes;

If the parameter is omitted or false, tolerations will be determined automatically.

Cation! Deckhouse will stop working if tolerations specified are incorrect. You need to change the values to the correct ones in ModuleConfig/deckhouse and deployment/deckhouse to get Deckhouse back on track.
- tolerations.effectstring
- tolerations.keystring
- tolerations.operatorstring
- tolerations.tolerationSecondsinteger
- tolerations.valuestring
updateobject
Settings of the Deckhouse update mode and windows.

Example:
```
update:
  windows:
  - from: '8:00'
    to: '15:00'
    days:
    - Tue
    - Sat
  disruptionApprovalMode: Manual
  notification:
    webhook: https://release-webhook.mydomain.com
    minimalNotificationTime: 6h
    auth:
      basic:
        username: user
        password: password
```
- update.disruptionApprovalModestring
  Deckhouse release update disruption mode:
  - Auto — approves release with disruptions (potentially dangerous changes) automatically.
  - Manual — requires manual release confirmation (set annotation release.deckhouse.io/disruption-approved=true).
  Default: "Auto"
  Allowed values: Auto, Manual
- update.modestring
  Deckhouse minor version update mode (release change). Does not affect patch version updates.
  - Auto — all updates are applied automatically.
    
    Deckhouse minor version updates (release updates, for example, from v1.26.* to v1.27.*), are applied according to the update windows or (if no update windows are set) as they appear on the corresponding release channel;
  - Manual — to change a minor version of Deckhouse (for example, from v1.26.* to v1.27.*), manual confirmation is required.
    
    To confirm the update, edit custom resource ‘DeckhouseRelease’, which corresponds to the version by setting the `approved’ field to ‘true’.
  Default: "Auto"
  Allowed values: Auto, Manual
- update.notificationobject
  Settings for notifications of scheduled Deckhouse updates.
  
  Has the effect only when the automatic update mode is set and only for Deckhouse minor version changes (for patch version changes the notifications parameter settings are ignored).
  
  Example:
```
notification:
  webhook: https://release-webhook.mydomain.com
  minimalNotificationTime: 8h
```
  - update.notification.authobject
    Authentication settings for the webhook.
    
    If the parameter is omitted, the webhook will be called without authentication.
    - update.notification.auth.basicobject
      Basic authentication settings for the webhook.
      
      If the parameter is omitted, the webhook will be called without authentication.
      - update.notification.auth.basic.passwordstring
        Required value
        The password for the webhook.
        
        The username and password will be sent in the Authorization header in the format Basic <base64(username:password)>.
      - update.notification.auth.basic.usernamestring
        Required value
        The username for the webhook.
        
        The username and password will be sent in the Authorization header in the format Basic <base64(username:password)>.
    - update.notification.auth.bearerTokenstring
      The token for the webhook.
      
      The token will be sent in the Authorization header in the format Bearer <token>.
  - update.notification.minimalNotificationTimestring
    The minimum time that must pass before updating from the moment a new minor version appears on the release channel used.
    
    It is specified as a string containing the time unit in hours and minutes: 30m, 1h, 2h30m, 24h.
    
    The update mechanism ensures that Deckhouse will not be updated until a specified period of time has passed.
    
    When using update windows, the Deckhouse update will happen at the nearest possible update window but not before the time specified in minimalNotificationTime expires.
    
    Pattern: ^([0-9]+h([0-9]+m)?|[0-9]+m)$
    Example:
    minimalNotificationTime: 6h
  - update.notification.tlsSkipVerifyboolean
    Skip TLS certificate verification while webhook request.
    
    Default: false
  - update.notification.webhookstring
    URL for an external webhook handler.
    
    The POST request will be sent on the webhook URL after a new minor version of Deckhouse appears on the update channel before it is applied to the cluster.
    
    Use the minimalNotificationTime parameter if necessary to set the minimum time that must pass before updating from the moment a new minor version appears on the release channel used.
    
    Example of the POST request payload (Content-Type: application/json):
    { "version": "1.36", "requirements": {"k8s": "1.20.0"}, "changelogLink": "https://github.com/deckhouse/deckhouse/changelog/1.36.md", "applyTime": "2023-01-01T14:30:00Z00:00", "message": "New Deckhouse Release 1.36 is available. Release will be applied at: Friday, 01-Jan-23 14:30:00 UTC" }
    Description of POST request fields:
    - version - string, minor version number;
    - requirements - object, version requirements;
    - changelogLink - string, a URL to the minor version changelog;
    - applyTime - string, date and time of the scheduled update (taking into account the configured update windows) in RFC3339 format;
    - message - string, a text message about the availability of the new minor version and the scheduled update time.
    Pattern: ^https?://[^\s/$.?#].[^\s]*$
    Example:
    webhook: https://webhook.site/#!/bc8f71ac-c182-4181-9159-6ba6950afffa
- update.windowsarray of objects
  List of update windows during the day.
  - update.windows.daysarray of strings
    The days of the week on which the update window is applied.
    
    Example:
    days: - Mon - Wed
    - Element of the arraystring
      Day of the week.
      
      Allowed values: Mon, Tue, Wed, Thu, Fri, Sat, Sun
      Example:
      Mon
  - update.windows.fromstring
    Required value
    Start time of the update window (UTC timezone).
    
    Should be less than the end time of the update window.
    
    Pattern: ^(?:\d|[01]\d|2[0-3]):[0-5]\d$
    Example:
    from: '13:00'
  - update.windows.tostring
    Required value
    End time of the update window (UTC timezone).
    
    Should be more than the start time of the update window.
    
    Pattern: ^(?:\d|[01]\d|2[0-3]):[0-5]\d$
    Example:
    to: '18:30'

The deckhouse module: configuration

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