metricbeat Warning FailedCreate DaemonSet/metricbeat Error creating: pods "metricbeat-" is forbidden: error looking up service account kube-system/metricbeat: serviceaccount "metricbeat" not found

ServiceAccount 생성

apiVersion: v1
kind: ServiceAccount
metadata:
  name: metricbeat
  namespace: kube-system

RBAC 생성: 없도 작동함(영향도를 확인 못함)

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: metricbeat
rules:
  - apiGroups: [""]
    resources: ["nodes", "nodes/stats", "pods", "services", "endpoints", "events"]
    verbs: ["get", "list", "watch"]
  - apiGroups: [""]
    resources: ["configmaps"]
    verbs: ["get"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: metricbeat
subjects:
  - kind: ServiceAccount
    name: metricbeat
    namespace: kube-system
roleRef:
  kind: ClusterRole
  name: metricbeat
  apiGroup: rbac.authorization.k8s.io