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

The module has 35 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…

Set the spec.enabled module parameter to true or false in the ModuleConfig/node-manager 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: node-manager
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 svc/deckhouse-leader -c deckhouse -- deckhouse-controller module enable node-manager

Example of disabling the module:

  • by using the ModuleConfig resource:

    apiVersion: deckhouse.io/v1alpha1
kind: ModuleConfig
metadata:
  name: node-manager
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 svc/deckhouse-leader -c deckhouse -- deckhouse-controller module disable node-manager

Conversions

The module is configured using the ModuleConfig resource, the schema of which contains a version number. When you apply an old version of the ModuleConfig schema in a cluster, automatic transformations are performed. To manually update the ModuleConfig schema version, the following steps must be completed sequentially for each version :

  • Updates from version 1 to 2:

    Delete allowedKubernetesVersions and allowedBundles.

Settings

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

Example of the ModuleConfig/node-manager resource for configuring the module:

apiVersion: deckhouse.io/v1alpha1
kind: ModuleConfig
metadata:
  name: node-manager
spec:
  version: 2
  enabled: true
  settings: # <-- Module parameters from the "Parameters" section below.

Parameters

Schema version: 2

  • settings
    object
    • settings.capiEmergencyBrake
      boolean

      Set to ‘true’ to disable CAPI in case of potentially cluster-damaging changes.

      Warning. Use this flag only if you know why you are doing it and clearly understand the consequences.

      Default: false

      Example:

      capiEmergencyBrake: false
    • settings.earlyOomEnabled
      boolean

      Set to ‘false’ to disable early OOM killer in case it behaves incorrectly.

      Default: true

      Example:

      earlyOomEnabled: false
    • settings.instancePrefix
      string

      The prefix to use when creating instances via the corresponding cloud provider module.

      The default value can be calculated based on the ClusterConfiguration struct if the cluster is installed via the Deckhouse installer.

      Example:

      instancePrefix: kube
    • settings.mcmEmergencyBrake
      boolean

      Set to ‘true’ to disable machine-controller-manager in case of potentially cluster-damaging changes.

      Warning! Use this flag only if you know what you are doing and clearly understand the consequences.

      Default: false

      Example:

      mcmEmergencyBrake: false