config-reloader: added properties for config reloader emptyDir sizeLimit management

Author: AndrewChubatiuk

api/operator/v1beta1/vmextra_types.go

@@ -1207,6 +1207,9 @@ type CommonConfigReloaderParams struct {
 	// available since v0.57.0 version
 	// +optional
 	ConfigReloadAuthKeySecret *corev1.SecretKeySelector `json:"configReloadAuthKeySecret,omitempty"`
+	// ConfigReloaderEmptyDir sets emptyDir for reloader emphemeral volume, that is shared with main container
+	// +optional
+	ConfigReloaderEmptyDir *corev1.EmptyDirVolumeSource `json:"configReloaderEmptyDir,omitempty"`
 }
 
 // CommonApplicationDeploymentParams defines common params

api/operator/v1beta1/zz_generated.deepcopy.go

@@ -7928,6 +7928,31 @@ spec:
                 - key
                 type: object
                 x-kubernetes-map-type: atomic
+              configReloaderEmptyDir:
+                description: ConfigReloaderEmptyDir sets emptyDir for reloader emphemeral
+                  volume, that is shared with main container
+                properties:
+                  medium:
+                    description: |-
+                      medium represents what type of storage medium should back this directory.
+                      The default is "" which means to use the node's default medium.
+                      Must be an empty string (default) or Memory.
+                      More info: https://kubernetes.io/docs/concepts/storage/volumes#emptydir
+                    type: string
+                  sizeLimit:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: |-
+                      sizeLimit is the total amount of local storage required for this EmptyDir volume.
+                      The size limit is also applicable for memory medium.
+                      The maximum usage on memory medium EmptyDir would be the minimum value between
+                      the SizeLimit specified here and the sum of memory limits of all containers in a pod.
+                      The default is nil which means that the limit is undefined.
+                      More info: https://kubernetes.io/docs/concepts/storage/volumes#emptydir
+                    pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
+                    x-kubernetes-int-or-string: true
+                type: object
               configReloaderExtraArgs:
                 additionalProperties:
                   type: string
@@ -17686,6 +17711,31 @@ spec:
                 - key
                 type: object
                 x-kubernetes-map-type: atomic
+              configReloaderEmptyDir:
+                description: ConfigReloaderEmptyDir sets emptyDir for reloader emphemeral
+                  volume, that is shared with main container
+                properties:
+                  medium:
+                    description: |-
+                      medium represents what type of storage medium should back this directory.
+                      The default is "" which means to use the node's default medium.
+                      Must be an empty string (default) or Memory.
+                      More info: https://kubernetes.io/docs/concepts/storage/volumes#emptydir
+                    type: string
+                  sizeLimit:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: |-
+                      sizeLimit is the total amount of local storage required for this EmptyDir volume.
+                      The size limit is also applicable for memory medium.
+                      The maximum usage on memory medium EmptyDir would be the minimum value between
+                      the SizeLimit specified here and the sum of memory limits of all containers in a pod.
+                      The default is nil which means that the limit is undefined.
+                      More info: https://kubernetes.io/docs/concepts/storage/volumes#emptydir
+                    pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
+                    x-kubernetes-int-or-string: true
+                type: object
               configReloaderExtraArgs:
                 additionalProperties:
                   type: string
@@ -19756,6 +19806,31 @@ spec:
                 - key
                 type: object
                 x-kubernetes-map-type: atomic
+              configReloaderEmptyDir:
+                description: ConfigReloaderEmptyDir sets emptyDir for reloader emphemeral
+                  volume, that is shared with main container
+                properties:
+                  medium:
+                    description: |-
+                      medium represents what type of storage medium should back this directory.
+                      The default is "" which means to use the node's default medium.
+                      Must be an empty string (default) or Memory.
+                      More info: https://kubernetes.io/docs/concepts/storage/volumes#emptydir
+                    type: string
+                  sizeLimit:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: |-
+                      sizeLimit is the total amount of local storage required for this EmptyDir volume.
+                      The size limit is also applicable for memory medium.
+                      The maximum usage on memory medium EmptyDir would be the minimum value between
+                      the SizeLimit specified here and the sum of memory limits of all containers in a pod.
+                      The default is nil which means that the limit is undefined.
+                      More info: https://kubernetes.io/docs/concepts/storage/volumes#emptydir
+                    pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
+                    x-kubernetes-int-or-string: true
+                type: object
               configReloaderExtraArgs:
                 additionalProperties:
                   type: string
@@ -24509,6 +24584,31 @@ spec:
                 - key
                 type: object
                 x-kubernetes-map-type: atomic
+              configReloaderEmptyDir:
+                description: ConfigReloaderEmptyDir sets emptyDir for reloader emphemeral
+                  volume, that is shared with main container
+                properties:
+                  medium:
+                    description: |-
+                      medium represents what type of storage medium should back this directory.
+                      The default is "" which means to use the node's default medium.
+                      Must be an empty string (default) or Memory.
+                      More info: https://kubernetes.io/docs/concepts/storage/volumes#emptydir
+                    type: string
+                  sizeLimit:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: |-
+                      sizeLimit is the total amount of local storage required for this EmptyDir volume.
+                      The size limit is also applicable for memory medium.
+                      The maximum usage on memory medium EmptyDir would be the minimum value between
+                      the SizeLimit specified here and the sum of memory limits of all containers in a pod.
+                      The default is nil which means that the limit is undefined.
+                      More info: https://kubernetes.io/docs/concepts/storage/volumes#emptydir
+                    pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
+                    x-kubernetes-int-or-string: true
+                type: object
               configReloaderExtraArgs:
                 additionalProperties:
                   type: string

config/crd/overlay/crd.yaml

@@ -27,6 +27,7 @@ aliases:
 * FEATURE: [vlagent](https://docs.victoriametrics.com/operator/resources/vlagent): support logs collection. See [#1501](https://github.com/VictoriaMetrics/operator/issues/1501).
 * FEATURE: [vmoperator](https://docs.victoriametrics.com/operator/): use `operator_bad_objects_total` metric with `object_namespace` and `crd` labels to track invalid objects managed by VMAgent, VMAuth, VMAlert and VMAlertmanager. Old `operator_alertmanager_bad_objects_count` and `operator_vmalert_bad_objects_count` are deprecated and will be removed in next releases.
 * FEATURE: [vmoperator](https://docs.victoriametrics.com/operator/): added HPA support for all cluster CR storage. See [#1678](https://github.com/VictoriaMetrics/operator/issues/1678).
+* FEATURE: [vmoperator](https://docs.victoriametrics.com/operator/): added VM_CONFIG_RELOADER_EMPTY_DIR_SIZE_LIMIT global variable and `spec.configReloaderEmptyDirSizeLimit` parameter that allows to set sizeLimit for emptyDir volume that is created for configurations that are watched by config-reloader. See [#1711](https://github.com/VictoriaMetrics/operator/issues/1711).
 
 * BUGFIX: [vmoperator](https://docs.victoriametrics.com/operator/): fixed HPA cleanup logic for all cluster resources, before it was constantly recreated. Bug introduced in [this commit](https://github.com/VictoriaMetrics/operator/commit/983d1678c37497a7d03d2f57821219fd4975deec).
 * BUGFIX: [VMCluster](https://docs.victoriametrics.com/operator/resources/vmcluster/), [VLCluster](https://docs.victoriametrics.com/operator/resources/vlcluster/) and [VTCluster](https://docs.victoriametrics.com/operator/resources/vtcluster/): prevent cluster load balancer secret from infinite reconcile.