add support to configure cluster autoscaler version

README.md

@@ -110,7 +110,7 @@ following from inside the directory where you have the config file for the clust
 docker run --rm -it \
   -v ${PWD}:/cluster \
   -v ${HOME}/.ssh:/tmp/.ssh \
-  janosmiko/hetzner-k3s:v0.1.8 \
+  janosmiko/hetzner-k3s:v0.1.9 \
   create-cluster \
   --config-file /cluster/test.yaml
 ```
@@ -181,6 +181,9 @@ autoscaling_node_pools:
 #  - --ignore-mirror-pods-utilization
 #  - --v=4
 
+# Specify the version of the Cluster Autoscaler to use.
+#cluster_autoscaler_version: "v1.24.1"
+
 additional_packages:
   - somepackage
 post_create_commands:

internal/config/config.go

@@ -29,6 +29,7 @@ type Config struct {
 	WorkerNodePools                   []WorkerConfig     `mapstructure:"worker_node_pools" validate:"dive"`
 	AutoscalingNodePools              []AutoscalerConfig `mapstructure:"autoscaling_node_pools" validate:"dive"`
 	ClusterAutoscalerArgs             []string           `mapstructure:"cluster_autoscaler_args" validate:"-"`
+	ClusterAutoscalerVersion          string             `mapstructure:"cluster_autoscaler_version" validate:"-"`
 	AdditionalPackages                []string           `mapstructure:"additional_packages" validate:"-"`
 	PostCreateCommands                []string           `mapstructure:"post_create_commands" validate:"-"`
 	DefaultNameservers                []string           `mapstructure:"default_nameservers" validate:"-"`

internal/k3s/cluster.go

@@ -414,6 +414,14 @@ func (c *Client) kubeProxyArgsList() string {
 	return res
 }
 
+func (c *Client) clusterAutoscalerVersion() string {
+	if c.cluster.ClusterAutoscalerVersion == "" {
+		c.cluster.ClusterAutoscalerVersion = "v1.24.1"
+	}
+
+	return c.cluster.ClusterAutoscalerVersion
+}
+
 func (c *Client) clusterAutoscalerArgs() []string {
 	stderrThresholdIsDefined := false
 

internal/k3s/hetzner.go

@@ -382,6 +382,7 @@ func (c *Client) hetznerClusterAutoscalerData() string { // nolint: funlen
 	tpldata["Image"] = c.image().Name
 	tpldata["CloudInit"] = c.autoscalerCloudInit()
 	tpldata["ClusterAutoscalerArgs"] = c.clusterAutoscalerArgs()
+	tpldata["ClusterAutoscalerVersion"] = c.clusterAutoscalerVersion()
 
 	tpl := `kubectl apply -f - <<-EOF
 ---
@@ -539,7 +540,7 @@ spec:
                   - key: node-role.kubernetes.io/master
                     operator: Exists
       containers:
-        - image: k8s.gcr.io/autoscaling/cluster-autoscaler:v1.23.0  # or your custom image
+        - image: k8s.gcr.io/autoscaling/cluster-autoscaler:{{ .ClusterAutoscalerVersion }}  # or your custom image
           name: cluster-autoscaler
           resources:
             limits:

sonar-project.properties

@@ -3,7 +3,7 @@ sonar.organization=janosmiko
 
 # This is the name and version displayed in the SonarCloud UI.
 sonar.projectName=hetzner-k3s
-sonar.projectVersion=0.1.8
+sonar.projectVersion=0.1.9
 
 # Path is relative to the sonar-project.properties file. Replace "\" by "/" on Windows.
 #sonar.sources=.