Merge pull request #747 from osherdp/feature/configuring-cluster-auto…

…scaler

OCM-209 | feat: Add cluster autoscaler structs to cluster model

model/clusters_mgmt/v1/autoscaler_resource_limits_type.model

@@ -0,0 +1,29 @@
+/*
+Copyright (c) 2023 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+struct AutoscalerResourceLimits {
+	// Maximum number of nodes in all node groups.
+	// Cluster autoscaler will not grow the cluster beyond this number.
+	MaxNodesTotal Integer
+
+	// Minimum and maximum number of cores in cluster, in the format <min>:<max>.
+	// Cluster autoscaler will not scale the cluster beyond these numbers.
+	Cores ResourceRange
+
+	// Minimum and maximum number of gigabytes of memory in cluster, in the format <min>:<max>.
+	// Cluster autoscaler will not scale the cluster beyond these numbers.
+	Memory ResourceRange
+}

model/clusters_mgmt/v1/autoscaler_scale_down_config_type.model

@@ -0,0 +1,35 @@
+/*
+Copyright (c) 2023 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+struct AutoscalerScaleDownConfig {
+	// Should cluster-autoscaler scale down the cluster.
+	Enabled Boolean
+
+	// How long a node should be unneeded before it is eligible for scale down.
+	UnneededTime String
+
+	// Node utilization level, defined as sum of requested resources divided by capacity, below which a node can be considered for scale down.
+	UtilizationThreshold String
+
+	// How long after scale up that scale down evaluation resumes.
+	DelayAfterAdd String
+
+	// How long after node deletion that scale down evaluation resumes, defaults to scan-interval.
+	DelayAfterDelete String
+
+	// How long after scale down failure that scale down evaluation resumes.
+	DelayAfterFailure String
+}

model/clusters_mgmt/v1/cluster_autoscaler_type.model

@@ -0,0 +1,41 @@
+/*
+Copyright (c) 2023 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Cluster-wide autoscaling configuration.
+struct ClusterAutoscaler {
+	// BalanceSimilarNodeGroups enables/disables the
+	// `--balance-similar-node-groups` cluster-autocaler feature.
+	// This feature will automatically identify node groups with
+	// the same instance type and the same set of labels and try
+	// to keep the respective sizes of those node groups balanced.
+	BalanceSimilarNodeGroups Boolean
+
+	// Enables/Disables `--skip-nodes-with-local-storage` CA feature flag. If true cluster autoscaler will never delete nodes with pods with local storage, e.g. EmptyDir or HostPath. true by default at autoscaler.
+	SkipNodesWithLocalStorage Boolean
+
+	// Sets the autoscaler log level.
+	// Default value is 1, level 4 is recommended for DEBUGGING and level 6 will enable almost everything.
+	LogVerbosity Integer
+
+	// Gives pods graceful termination time before scaling down.
+	MaxPodGracePeriod Integer
+
+	// Constraints of autoscaling resources.
+	ResourceLimits AutoscalerResourceLimits
+
+	// Configuration of scale down operation.
+	ScaleDown AutoscalerScaleDownConfig
+}

model/clusters_mgmt/v1/cluster_type.model

@@ -105,6 +105,9 @@ class Cluster {
 	// Proxy.
 	Proxy Proxy
 
+	// Autoscaler.
+	Autoscaler ClusterAutoscaler
+
 	// Additional trust bundle.
 	AdditionalTrustBundle String
 

model/clusters_mgmt/v1/resource_range_type.model

@@ -0,0 +1,20 @@
+/*
+Copyright (c) 2023 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+struct ResourceRange {
+	Min Integer
+	Max Integer
+}