add kube_node_status_addresses metric to docs

Author: stonith

docs/node-metrics.md

@@ -9,6 +9,7 @@
 | kube_node_spec_unschedulable | Gauge       | Whether a node can schedule new pods                                                                                      |                                                                                                                                                                                          | `node`=<node-address>                                                                                                                                                                                                                                                                                                                                                                                                                               | STABLE       |
 | kube_node_spec_taint         | Gauge       | The taint of a cluster node.                                                                                              |                                                                                                                                                                                          | `node`=&lt;node-address&gt; <br> `key`=&lt;taint-key&gt; <br> `value=`&lt;taint-value&gt; <br> `effect=`&lt;taint-effect&gt;                                                                                                                                                                                                                                                                                                                              | STABLE       |
 | kube_node_status_capacity    | Gauge       | The total amount of resources available for a node                                                                        | `cpu`=&lt;core&gt; <br> `ephemeral_storage`=&lt;byte&gt; <br> `pods`=&lt;integer&gt; <br> `attachable_volumes_*`=&lt;byte&gt; <br> `hugepages_*`=&lt;byte&gt; <br> `memory`=&lt;byte&gt; | `node`=&lt;node-address&gt; <br> `resource`=&lt;resource-name&gt; <br> `unit`=&lt;resource-unit&gt;                                                                                                                                                                                                                                                                                                                                                       | STABLE       |
+| kube_node_status_addresses         | Gauge       | The addresses of a node                                                                                              |                                                                                                                                                                                          |  `node`=&lt;node-address&gt; <br> `type`=&lt;address-type&gt; <br> `address`=&lt;address-value&gt;                                                                                                                                                                                                                                           | EXPERIMENTAL       |
 | kube_node_status_allocatable | Gauge       | The amount of resources allocatable for pods (after reserving some for system daemons)                                    | `cpu`=&lt;core&gt; <br> `ephemeral_storage`=&lt;byte&gt; <br> `pods`=&lt;integer&gt; <br> `attachable_volumes_*`=&lt;byte&gt; <br> `hugepages_*`=&lt;byte&gt; <br> `memory`=&lt;byte&gt; | `node`=&lt;node-address&gt; <br> `resource`=&lt;resource-name&gt; <br> `unit`=&lt;resource-unit&gt;                                                                                                                                                                                                                                                                                                                                                       | STABLE       |
 | kube_node_status_condition   | Gauge       | The condition of a cluster node                                                                                           |                                                                                                                                                                                          | `node`=&lt;node-address&gt; <br> `condition`=&lt;node-condition&gt; <br> `status`=&lt;true\|false\|unknown&gt;                                                                                                                                                                                                                                                                                                                                            | STABLE       |
 | kube_node_created            | Gauge       | Unix creation timestamp                                                                                                   | seconds                                                                                                                                                                                  | `node`=&lt;node-address&gt;                                                                                                                                                                                                                                                                                                                                                                                                                               | STABLE       |

internal/store/node.go

@@ -158,6 +158,7 @@ func createNodeInfoFamilyGenerator() generator.FamilyGenerator {
 				n.Status.NodeInfo.SystemUUID,
 			}
 
+			// TODO: remove internal_ip in v3, replaced by kube_node_status_addresses
 			internalIP := ""
 			for _, address := range n.Status.Addresses {
 				if address.Type == "InternalIP" {