Kubernetes module for metricbeat (#3916)

* Kubernetes module for metricbeat

* Changing nanoseconds in schema of kubelet module

metricbeat/docs/fields.asciidoc

@@ -23,6 +23,7 @@ grouped in the following categories:
 * <<exported-fields-haproxy>>
 * <<exported-fields-jolokia>>
 * <<exported-fields-kafka>>
+* <<exported-fields-kubelet>>
 * <<exported-fields-memcached>>
 * <<exported-fields-mongodb>>
 * <<exported-fields-mysql>>
@@ -3329,6 +3330,95 @@ type: keyword
 Broker address
 
 
+[[exported-fields-kubelet]]
+== kubelet Fields
+
+beta[]
+kubelet Module
+
+
+
+[float]
+== kubelet Fields
+
+
+
+
+[float]
+== container Fields
+
+node
+
+
+
+[float]
+=== kubelet.container.example
+
+type: keyword
+
+Example field
+
+
+[float]
+== node Fields
+
+node
+
+
+
+[float]
+=== kubelet.node.example
+
+type: keyword
+
+Example field
+
+
+[float]
+== pod Fields
+
+node
+
+
+
+[float]
+=== kubelet.pod.example
+
+type: keyword
+
+Example field
+
+
+[float]
+== system Fields
+
+node
+
+
+
+[float]
+=== kubelet.system.example
+
+type: keyword
+
+Example field
+
+
+[float]
+== volume Fields
+
+node
+
+
+
+[float]
+=== kubelet.volume.example
+
+type: keyword
+
+Example field
+
+
 [[exported-fields-memcached]]
 == memcached Fields
 

metricbeat/docs/modules/kubelet.asciidoc

@@ -0,0 +1,53 @@
+////
+This file is generated! See scripts/docs_collector.py
+////
+
+[[metricbeat-module-kubelet]]
+== kubelet Module
+
+This is the kubelet Module.
+
+
+
+[float]
+=== Example Configuration
+
+The kubelet module supports the standard configuration options that are described
+in <<configuration-metricbeat>>. Here is an example configuration:
+
+[source,yaml]
+----
+metricbeat.modules:
+#- module: kubelet
+#  metricsets: ["node","container","volume","pod","system"]
+#  enabled: true
+#  period: 10s
+#  hosts: ["localhost:10255"]
+
+----
+
+[float]
+=== Metricsets
+
+The following metricsets are available:
+
+* <<metricbeat-metricset-kubelet-container,container>>
+
+* <<metricbeat-metricset-kubelet-node,node>>
+
+* <<metricbeat-metricset-kubelet-pod,pod>>
+
+* <<metricbeat-metricset-kubelet-system,system>>
+
+* <<metricbeat-metricset-kubelet-volume,volume>>
+
+include::kubelet/container.asciidoc[]
+
+include::kubelet/node.asciidoc[]
+
+include::kubelet/pod.asciidoc[]
+
+include::kubelet/system.asciidoc[]
+
+include::kubelet/volume.asciidoc[]
+

metricbeat/docs/modules/kubelet/container.asciidoc

@@ -0,0 +1,19 @@
+////
+This file is generated! See scripts/docs_collector.py
+////
+
+[[metricbeat-metricset-kubelet-container]]
+include::../../../module/kubelet/container/_meta/docs.asciidoc[]
+
+
+==== Fields
+
+For a description of each field in the metricset, see the
+<<exported-fields-kubelet,exported fields>> section.
+
+Here is an example document generated by this metricset:
+
+[source,json]
+----
+include::../../../module/kubelet/container/_meta/data.json[]
+----

metricbeat/docs/modules/kubelet/node.asciidoc

@@ -0,0 +1,19 @@
+////
+This file is generated! See scripts/docs_collector.py
+////
+
+[[metricbeat-metricset-kubelet-node]]
+include::../../../module/kubelet/node/_meta/docs.asciidoc[]
+
+
+==== Fields
+
+For a description of each field in the metricset, see the
+<<exported-fields-kubelet,exported fields>> section.
+
+Here is an example document generated by this metricset:
+
+[source,json]
+----
+include::../../../module/kubelet/node/_meta/data.json[]
+----

metricbeat/docs/modules/kubelet/pod.asciidoc

@@ -0,0 +1,19 @@
+////
+This file is generated! See scripts/docs_collector.py
+////
+
+[[metricbeat-metricset-kubelet-pod]]
+include::../../../module/kubelet/pod/_meta/docs.asciidoc[]
+
+
+==== Fields
+
+For a description of each field in the metricset, see the
+<<exported-fields-kubelet,exported fields>> section.
+
+Here is an example document generated by this metricset:
+
+[source,json]
+----
+include::../../../module/kubelet/pod/_meta/data.json[]
+----

metricbeat/docs/modules/kubelet/system.asciidoc

@@ -0,0 +1,19 @@
+////
+This file is generated! See scripts/docs_collector.py
+////
+
+[[metricbeat-metricset-kubelet-system]]
+include::../../../module/kubelet/system/_meta/docs.asciidoc[]
+
+
+==== Fields
+
+For a description of each field in the metricset, see the
+<<exported-fields-kubelet,exported fields>> section.
+
+Here is an example document generated by this metricset:
+
+[source,json]
+----
+include::../../../module/kubelet/system/_meta/data.json[]
+----

metricbeat/docs/modules/kubelet/volume.asciidoc

@@ -0,0 +1,19 @@
+////
+This file is generated! See scripts/docs_collector.py
+////
+
+[[metricbeat-metricset-kubelet-volume]]
+include::../../../module/kubelet/volume/_meta/docs.asciidoc[]
+
+
+==== Fields
+
+For a description of each field in the metricset, see the
+<<exported-fields-kubelet,exported fields>> section.
+
+Here is an example document generated by this metricset:
+
+[source,json]
+----
+include::../../../module/kubelet/volume/_meta/data.json[]
+----

metricbeat/docs/modules_list.asciidoc

@@ -10,6 +10,7 @@ This file is generated! See scripts/docs_collector.py
   * <<metricbeat-module-haproxy,HAProxy>>
   * <<metricbeat-module-jolokia,Jolokia>>
   * <<metricbeat-module-kafka,kafka>>
+  * <<metricbeat-module-kubelet,kubelet>>
   * <<metricbeat-module-memcached,memcached>>
   * <<metricbeat-module-mongodb,MongoDB>>
   * <<metricbeat-module-mysql,MySQL>>
@@ -33,6 +34,7 @@ include::modules/golang.asciidoc[]
 include::modules/haproxy.asciidoc[]
 include::modules/jolokia.asciidoc[]
 include::modules/kafka.asciidoc[]
+include::modules/kubelet.asciidoc[]
 include::modules/memcached.asciidoc[]
 include::modules/mongodb.asciidoc[]
 include::modules/mysql.asciidoc[]

metricbeat/include/list.go

@@ -39,6 +39,12 @@ import (
 	_ "github.com/elastic/beats/metricbeat/module/kafka"
 	_ "github.com/elastic/beats/metricbeat/module/kafka/consumergroup"
 	_ "github.com/elastic/beats/metricbeat/module/kafka/partition"
+	_ "github.com/elastic/beats/metricbeat/module/kubelet"
+	_ "github.com/elastic/beats/metricbeat/module/kubelet/container"
+	_ "github.com/elastic/beats/metricbeat/module/kubelet/node"
+	_ "github.com/elastic/beats/metricbeat/module/kubelet/pod"
+	_ "github.com/elastic/beats/metricbeat/module/kubelet/system"
+	_ "github.com/elastic/beats/metricbeat/module/kubelet/volume"
 	_ "github.com/elastic/beats/metricbeat/module/memcached"
 	_ "github.com/elastic/beats/metricbeat/module/memcached/stats"
 	_ "github.com/elastic/beats/metricbeat/module/mongodb"

metricbeat/metricbeat.full.yml

@@ -182,6 +182,14 @@ metricbeat.modules:
   #username: ""
   #password: ""
 
+#------------------------------- kubelet Module ------------------------------
+#- module: kubelet
+#  metricsets: ["node","container","volume","pod","system"]
+#  enabled: true
+#  period: 10s
+#  hosts: ["localhost:10255"]
+
+
 #------------------------------ memcached Module -----------------------------
 - module: memcached
   metricsets: ["stats"]

metricbeat/module/kubelet/_meta/config.yml

@@ -0,0 +1,6 @@
+#- module: kubelet
+#  metricsets: ["node","container","volume","pod","system"]
+#  enabled: true
+#  period: 10s
+#  hosts: ["localhost:10255"]
+

metricbeat/module/kubelet/_meta/docs.asciidoc

@@ -0,0 +1,4 @@
+== kubelet Module
+
+This is the kubelet Module.
+

metricbeat/module/kubelet/_meta/fields.yml

@@ -0,0 +1,12 @@
+- key: kubelet
+  title: "kubelet"
+  description: >
+    beta[]
+
+    kubelet Module
+  short_config: false
+  fields:
+    - name: kubelet
+      type: group
+      description: >
+      fields: