cluster-autoscaler ds eviction annotation (#57)

Signed-off-by: borg-z <[email protected]>

Author: borg-z

charts/helm_lib/Chart.yaml

@@ -1,5 +1,5 @@
 apiVersion: v2
 type: library
 name: deckhouse_lib_helm
-version: 1.22.0
+version: 1.23.0
 description: "Helm utils template definitions for Deckhouse modules."

charts/helm_lib/README.md

@@ -4,6 +4,8 @@
 
 | Table of contents |
 |---|
+| **Enable Ds Eviction** |
+| [helm_lib_ds_eviction_annotation](#helm_lib_ds_eviction_annotation) |
 | **Envs For Proxy** |
 | [helm_lib_envs_for_proxy](#helm_lib_envs_for_proxy) |
 | **High Availability** |
@@ -102,6 +104,18 @@
 | [helm_lib_deployment_on_master_custom_strategy_and_replicas_for_ha](#helm_lib_deployment_on_master_custom_strategy_and_replicas_for_ha) |
 | [helm_lib_deployment_strategy_and_replicas_for_ha](#helm_lib_deployment_strategy_and_replicas_for_ha) |
 
+## Enable Ds Eviction
+
+### helm_lib_ds_eviction_annotation
+
+ Adds `cluster-autoscaler.kubernetes.io/enable-ds-eviction` annotation to manage DaemonSet eviction by the Cluster Autoscaler. 
+ This is important to prevent the eviction of DaemonSet pods during cluster scaling.  
+
+#### Usage
+
+`{{ include "helm_lib_ds_eviction_annotation" . }} `
+
+
 ## Envs For Proxy
 
 ### helm_lib_envs_for_proxy

charts/helm_lib/templates/_enable_ds_eviction.tpl

@@ -0,0 +1,7 @@
+{{- /* Usage: {{ include "helm_lib_ds_eviction_annotation" . }} */ -}}
+{{- /* Adds `cluster-autoscaler.kubernetes.io/enable-ds-eviction` annotation to manage DaemonSet eviction by the Cluster Autoscaler. */ -}}
+{{- /* This is important to prevent the eviction of DaemonSet pods during cluster scaling.  */ -}}
+{{- define "helm_lib_ds_eviction_annotation" -}}
+{{- $enableEviction := default "false" (index . 1) }}
+cluster-autoscaler.kubernetes.io/enable-ds-eviction: "{{ $enableEviction }}"
+{{- end }}