Update labels to use kubernetes recommended labels (elastic#4722)

Kubernetes have not used the `app` or `k8s-app` for some time
and have provided guidance on what the recommended labels are
for some time as seen in their [docs](https://kubernetes.io/docs/concepts/overview/working-with-objects/common-labels/).

This commit updates all manifests/docs to use this approach.

Co-authored-by: Julien Lind <julien.lind@elastic.co>

changelog/fragments/1715551124-Update-kubernetes-manifests-to-adopt-official-recommended-labels.yaml

@@ -0,0 +1,31 @@
+# Kind can be one of:
+# - breaking-change: a change to previously-documented behavior
+# - deprecation: functionality that is being removed in a later release
+# - bug-fix: fixes a problem in a previous version
+# - enhancement: extends functionality but does not break or fix existing behavior
+# - feature: new functionality
+# - known-issue: problems that we are aware of in a given version
+# - security: impacts on the security of a product or a user’s deployment.
+# - upgrade: important information for someone upgrading from a prior version
+# - other: does not fit into any of the other categories
+kind: feature
+
+# Change summary; a 80ish characters long description of the change.
+summary: Update kubernetes manifests to adopt official recommended labels
+
+# Long description; in case the summary is not enough to describe the change
+# this field accommodate a description without length limits.
+# NOTE: This field will be rendered only for breaking-change and known-issue kinds at the moment.
+description: Update kubernetes manifests to adopt the official recommended labels. This will require a `kubectl replace` to apply as selector labels are an immutable field.
+
+# Affected component; usually one of "elastic-agent", "fleet-server", "filebeat", "metricbeat", "auditbeat", "all", etc.
+component: elastic-agent
+
+# PR URL; optional; the PR number that added the changeset.
+# If not present is automatically filled by the tooling finding the PR where this changelog fragment has been added.
+# NOTE: the tooling supports backports, so it's able to fill the original PR number instead of the backport PR number.
+# Please provide it if you are adding a fragment for a different PR.
+pr: https://github.com/elastic/elastic-agent/pull/4722
+# Issue URL; optional; the GitHub issue related to this changeset (either closes or is part of).
+# If not present is automatically filled by the tooling with the issue linked to the PR number.
+#issue: https://github.com/owner/repo/1234

deploy/kubernetes/elastic-agent-kustomize/default/elastic-agent-managed/base/elastic-agent-managed-daemonset.yaml

@@ -5,15 +5,15 @@ metadata:
   name: elastic-agent
   namespace: kube-system
   labels:
-    app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 spec:
   selector:
     matchLabels:
-      app: elastic-agent
+      app.kubernetes.io/name: elastic-agent
   template:
     metadata:
       labels:
-        app: elastic-agent
+        app.kubernetes.io/name: elastic-agent
     spec:
       # Tolerations are needed to run Elastic Agent on Kubernetes control-plane nodes.
       # Agents running on control-plane nodes collect metrics from the control plane components (scheduler, controller manager) of Kubernetes

deploy/kubernetes/elastic-agent-kustomize/default/elastic-agent-managed/base/elastic-agent-managed-role.yaml

@@ -3,7 +3,7 @@ kind: ClusterRole
 metadata:
   name: elastic-agent
   labels:
-    k8s-app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 rules:
   - apiGroups: [""]
     resources:
@@ -75,7 +75,7 @@ metadata:
   # Should be the namespace where elastic-agent is running
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 rules:
   - apiGroups:
       - coordination.k8s.io
@@ -89,7 +89,7 @@ metadata:
   name: elastic-agent-kubeadm-config
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 rules:
   - apiGroups: [""]
     resources:

deploy/kubernetes/elastic-agent-kustomize/default/elastic-agent-managed/base/elastic-agent-managed-service-account.yaml

@@ -4,4 +4,4 @@ metadata:
   name: elastic-agent
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent
+    app.kubernetes.io/name: elastic-agent

deploy/kubernetes/elastic-agent-kustomize/default/elastic-agent-standalone/base/elastic-agent-standalone-daemonset-configmap.yaml

@@ -5,7 +5,7 @@ metadata:
   name: agent-node-datastreams
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 data:
   agent.yml: |-
     outputs:

deploy/kubernetes/elastic-agent-kustomize/default/elastic-agent-standalone/base/elastic-agent-standalone-daemonset.yaml

@@ -5,15 +5,15 @@ metadata:
   name: elastic-agent-standalone
   namespace: kube-system
   labels:
-    app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 spec:
   selector:
     matchLabels:
-      app: elastic-agent-standalone
+      app.kubernetes.io/name: elastic-agent-standalone
   template:
     metadata:
       labels:
-        app: elastic-agent-standalone
+        app.kubernetes.io/name: elastic-agent-standalone
     spec:
       # Tolerations are needed to run Elastic Agent on Kubernetes control-plane nodes.
       # Agents running on control-plane nodes collect metrics from the control plane components (scheduler, controller manager) of Kubernetes

deploy/kubernetes/elastic-agent-kustomize/default/elastic-agent-standalone/base/elastic-agent-standalone-ksm-daemonset-configmap.yaml

@@ -6,7 +6,7 @@ metadata:
   name: agent-node-datastreams
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 data:
   agent.yml: |-
     outputs:

deploy/kubernetes/elastic-agent-kustomize/default/elastic-agent-standalone/base/elastic-agent-standalone-ksm-statefulset-configmap.yaml

@@ -6,7 +6,7 @@ metadata:
   name: agent-ksm-datastreams
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 data:
   agent.yml: |-
     outputs:

deploy/kubernetes/elastic-agent-kustomize/default/elastic-agent-standalone/base/elastic-agent-standalone-role.yaml

@@ -3,7 +3,7 @@ kind: ClusterRole
 metadata:
   name: elastic-agent-standalone
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 rules:
   - apiGroups: [""]
     resources:
@@ -75,7 +75,7 @@ metadata:
   # Should be the namespace where elastic-agent is running
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 rules:
   - apiGroups:
       - coordination.k8s.io
@@ -89,7 +89,7 @@ metadata:
   name: elastic-agent-standalone-kubeadm-config
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 rules:
   - apiGroups: [""]
     resources:

deploy/kubernetes/elastic-agent-kustomize/default/elastic-agent-standalone/base/elastic-agent-standalone-service-account.yaml

@@ -4,4 +4,4 @@ metadata:
   name: elastic-agent-standalone
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone

deploy/kubernetes/elastic-agent-kustomize/ksm-autosharding/elastic-agent-managed/base/elastic-agent-managed-daemonset.yaml

@@ -5,15 +5,15 @@ metadata:
   name: elastic-agent
   namespace: kube-system
   labels:
-    app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 spec:
   selector:
     matchLabels:
-      app: elastic-agent
+      app.kubernetes.io/name: elastic-agent
   template:
     metadata:
       labels:
-        app: elastic-agent
+        app.kubernetes.io/name: elastic-agent
     spec:
       # Tolerations are needed to run Elastic Agent on Kubernetes control-plane nodes.
       # Agents running on control-plane nodes collect metrics from the control plane components (scheduler, controller manager) of Kubernetes

deploy/kubernetes/elastic-agent-kustomize/ksm-autosharding/elastic-agent-managed/base/elastic-agent-managed-role.yaml

@@ -3,7 +3,7 @@ kind: ClusterRole
 metadata:
   name: elastic-agent
   labels:
-    k8s-app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 rules:
   - apiGroups: [""]
     resources:
@@ -75,7 +75,7 @@ metadata:
   # Should be the namespace where elastic-agent is running
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 rules:
   - apiGroups:
       - coordination.k8s.io
@@ -89,7 +89,7 @@ metadata:
   name: elastic-agent-kubeadm-config
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 rules:
   - apiGroups: [""]
     resources:

deploy/kubernetes/elastic-agent-kustomize/ksm-autosharding/elastic-agent-managed/base/elastic-agent-managed-service-account.yaml

@@ -4,4 +4,4 @@ metadata:
   name: elastic-agent
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent
+    app.kubernetes.io/name: elastic-agent

deploy/kubernetes/elastic-agent-kustomize/ksm-autosharding/elastic-agent-managed/extra/elastic-agent-managed-statefulset.yaml

@@ -5,15 +5,15 @@ metadata:
   name: elastic-agent
   namespace: kube-system
   labels:
-    app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 spec:
   selector:
     matchLabels:
-      app: elastic-agent
+      app.kubernetes.io/name: elastic-agent
   template:
     metadata:
       labels:
-        app: elastic-agent
+        app.kubernetes.io/name: elastic-agent
     spec:
       # Tolerations are needed to run Elastic Agent on Kubernetes control-plane nodes.
       # Agents running on control-plane nodes collect metrics from the control plane components (scheduler, controller manager) of Kubernetes

deploy/kubernetes/elastic-agent-kustomize/ksm-autosharding/elastic-agent-standalone/base/elastic-agent-standalone-daemonset.yaml

@@ -5,15 +5,15 @@ metadata:
   name: elastic-agent-standalone
   namespace: kube-system
   labels:
-    app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 spec:
   selector:
     matchLabels:
-      app: elastic-agent-standalone
+      app.kubernetes.io/name: elastic-agent-standalone
   template:
     metadata:
       labels:
-        app: elastic-agent-standalone
+        app.kubernetes.io/name: elastic-agent-standalone
     spec:
       # Tolerations are needed to run Elastic Agent on Kubernetes control-plane nodes.
       # Agents running on control-plane nodes collect metrics from the control plane components (scheduler, controller manager) of Kubernetes

deploy/kubernetes/elastic-agent-kustomize/ksm-autosharding/elastic-agent-standalone/base/elastic-agent-standalone-ksm-daemonset-configmap.yaml

@@ -6,7 +6,7 @@ metadata:
   name: agent-node-datastreams
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 data:
   agent.yml: |-
     outputs:

deploy/kubernetes/elastic-agent-kustomize/ksm-autosharding/elastic-agent-standalone/base/elastic-agent-standalone-ksm-statefulset-configmap.yaml

@@ -6,7 +6,7 @@ metadata:
   name: agent-ksm-datastreams
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 data:
   agent.yml: |-
     outputs:

deploy/kubernetes/elastic-agent-kustomize/ksm-autosharding/elastic-agent-standalone/base/elastic-agent-standalone-role.yaml

@@ -3,7 +3,7 @@ kind: ClusterRole
 metadata:
   name: elastic-agent-standalone
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 rules:
   - apiGroups: [""]
     resources:
@@ -75,7 +75,7 @@ metadata:
   # Should be the namespace where elastic-agent is running
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 rules:
   - apiGroups:
       - coordination.k8s.io
@@ -89,7 +89,7 @@ metadata:
   name: elastic-agent-standalone-kubeadm-config
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 rules:
   - apiGroups: [""]
     resources:

deploy/kubernetes/elastic-agent-kustomize/ksm-autosharding/elastic-agent-standalone/base/elastic-agent-standalone-service-account.yaml

@@ -4,4 +4,4 @@ metadata:
   name: elastic-agent-standalone
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone

deploy/kubernetes/elastic-agent-kustomize/ksm-autosharding/elastic-agent-standalone/extra/elastic-agent-standalone-statefulset.yaml

@@ -5,15 +5,15 @@ metadata:
   name: elastic-agent-standalone
   namespace: kube-system
   labels:
-    app: elastic-agent-standalone
+    app.kubernetes.io/name: elastic-agent-standalone
 spec:
   selector:
     matchLabels:
-      app: elastic-agent-standalone
+      app.kubernetes.io/name: elastic-agent-standalone
   template:
     metadata:
       labels:
-        app: elastic-agent-standalone
+        app.kubernetes.io/name: elastic-agent-standalone
     spec:
       # Tolerations are needed to run Elastic Agent on Kubernetes control-plane nodes.
       # Agents running on control-plane nodes collect metrics from the control plane components (scheduler, controller manager) of Kubernetes

deploy/kubernetes/elastic-agent-managed-kubernetes.yaml

@@ -5,15 +5,15 @@ metadata:
   name: elastic-agent
   namespace: kube-system
   labels:
-    app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 spec:
   selector:
     matchLabels:
-      app: elastic-agent
+      app.kubernetes.io/name: elastic-agent
   template:
     metadata:
       labels:
-        app: elastic-agent
+        app.kubernetes.io/name: elastic-agent
     spec:
       # Tolerations are needed to run Elastic Agent on Kubernetes control-plane nodes.
       # Agents running on control-plane nodes collect metrics from the control plane components (scheduler, controller manager) of Kubernetes
@@ -192,7 +192,7 @@ kind: ClusterRole
 metadata:
   name: elastic-agent
   labels:
-    k8s-app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 rules:
   - apiGroups: [""]
     resources:
@@ -264,7 +264,7 @@ metadata:
   # Should be the namespace where elastic-agent is running
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 rules:
   - apiGroups:
       - coordination.k8s.io
@@ -278,7 +278,7 @@ metadata:
   name: elastic-agent-kubeadm-config
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 rules:
   - apiGroups: [""]
     resources:
@@ -293,5 +293,5 @@ metadata:
   name: elastic-agent
   namespace: kube-system
   labels:
-    k8s-app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 ---

deploy/kubernetes/elastic-agent-managed/elastic-agent-managed-daemonset.yaml

@@ -5,15 +5,15 @@ metadata:
   name: elastic-agent
   namespace: kube-system
   labels:
-    app: elastic-agent
+    app.kubernetes.io/name: elastic-agent
 spec:
   selector:
     matchLabels:
-      app: elastic-agent
+      app.kubernetes.io/name: elastic-agent
   template:
     metadata:
       labels:
-        app: elastic-agent
+        app.kubernetes.io/name: elastic-agent
     spec:
       # Tolerations are needed to run Elastic Agent on Kubernetes control-plane nodes.
       # Agents running on control-plane nodes collect metrics from the control plane components (scheduler, controller manager) of Kubernetes