Add --config flag

--config flag defines the path to the kube-state-metrics options config file.

Author: rexagod

pkg/options/options.go

@@ -45,8 +45,8 @@ type Options struct {
 	TotalShards          int
 	Pod                  string
 	Namespace            string
-	MetricDenylist       MetricSet
-	MetricAllowlist      MetricSet
+	MetricDenylist       MetricSet `yaml:"metric_denylist"`
+	MetricAllowlist      MetricSet `yaml:"metric_allowlist"`
 	MetricOptInList      MetricSet
 	Version              bool
 	AnnotationsAllowList LabelsAllowList
@@ -60,6 +60,8 @@ type Options struct {
 	CustomResourceConfigFile string
 	CustomResourcesOnly      bool
 
+	optsConfigFile string
+
 	cmd *cobra.Command
 }
 
@@ -133,6 +135,7 @@ func (o *Options) AddFlags(cmd *cobra.Command) {
 	o.cmd.Flags().StringVar(&o.Pod, "pod", "", "Name of the pod that contains the kube-state-metrics container. "+autoshardingNotice)
 	o.cmd.Flags().StringVar(&o.TLSConfig, "tls-config", "", "Path to the TLS configuration file")
 	o.cmd.Flags().StringVar(&o.TelemetryHost, "telemetry-host", "::", `Host to expose kube-state-metrics self metrics on.`)
+	o.cmd.Flags().StringVar(&o.optsConfigFile, "options-config-file", "", "Path to the kube-state-metrics options config file")
 	o.cmd.Flags().StringVar((*string)(&o.Node), "node", "", "Name of the node that contains the kube-state-metrics pod. Most likely it should be passed via the downward API. This is used for daemonset sharding. Only available for resources (pod metrics) that support spec.nodeName fieldSelector. This is experimental.")
 	o.cmd.Flags().Var(&o.AnnotationsAllowList, "metric-annotations-allowlist", "Comma-separated list of Kubernetes annotations keys that will be used in the resource' labels metric. By default the metric contains only name and namespace labels. To include additional annotations provide a list of resource names in their plural form and Kubernetes annotation keys you would like to allow for them (Example: '=namespaces=[kubernetes.io/team,...],pods=[kubernetes.io/team],...)'. A single '*' can be provided per resource instead to allow any annotations, but that has severe performance implications (Example: '=pods=[*]').")
 	o.cmd.Flags().Var(&o.LabelsAllowList, "metric-labels-allowlist", "Comma-separated list of additional Kubernetes label keys that will be used in the resource' labels metric. By default the metric contains only name and namespace labels. To include additional labels provide a list of resource names in their plural form and Kubernetes label keys you would like to allow for them (Example: '=namespaces=[k8s-label-1,k8s-label-n,...],pods=[app],...)'. A single '*' can be provided per resource instead to allow any labels, but that has severe performance implications (Example: '=pods=[*]'). Additionally, an asterisk (*) can be provided as a key, which will resolve to all resources, i.e., assuming '--resources=deployments,pods', '=*=[*]' will resolve to '=deployments=[*],pods=[*]'.")