k8s - Using Promethues with cAdvisor to monitor microservice/Pod data - amazon-web-services

Question

I'm running Prometheus operator in the new Kubernetes cluster and I try to get container details.
The query dashboard of Prometheus doesn't provide any container data, when I look at the target I see the following
Maybe it's because of the roles but I'm not sure since I'm new to this topic
I saw also this:
https://github.com/coreos/prometheus-operator/issues/867
and I add the authentication-token-webhook which doesn't help, but maybe I didn't do it in the right place...
Any idea what am I missing here?
my operator.yml config look like following
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
name: prometheus-operator
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: prometheus-operator
subjects:
- kind: ServiceAccount
name: prometheus-operator
namespace: default
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
name: prometheus-operator
rules:
- apiGroups:
- extensions
resources:
- thirdpartyresources
verbs:
- "*"
- apiGroups:
- apiextensions.k8s.io
resources:
- customresourcedefinitions
verbs:
- "*"
- apiGroups:
- monitoring.coreos.com
resources:
- alertmanagers
- prometheuses
- prometheuses/finalizers
- servicemonitors
verbs:
- "*"
- apiGroups:
- apps
resources:
- statefulsets
verbs: ["*"]
- apiGroups: [""]
resources:
- configmaps
- secrets
verbs: ["*"]
- apiGroups: [""]
resources:
- pods
verbs: ["list", "delete"]
- apiGroups: [""]
resources:
- services
- endpoints
verbs: ["get", "create", "update"]
- apiGroups: [""]
resources:
- nodes
verbs: ["list", "watch"]
- apiGroups: [""]
resources:
- namespaces
verbs: ["list"]
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: prometheus-operator
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
labels:
k8s-app: prometheus-operator
name: prometheus-operator
spec:
replicas: 1
template:
metadata:
labels:
k8s-app: prometheus-operator
spec:
containers:
- args:
- --kubelet-service=kube-system/kubelet
- --config-reloader-image=quay.io/coreos/configmap-reload:v0.0.1
- --authentication-token-webhook=true
- --extra-config=kubelet.authentication-token-webhook=true
image: quay.io/coreos/prometheus-operator:v0.17.0
name: prometheus-operator
ports:
- containerPort: 8080
name: http
resources:
limits:
cpu: 200m
memory: 100Mi
requests:
cpu: 100m
memory: 50Mi
securityContext:
runAsNonRoot: true
runAsUser: 65534
serviceAccountName: prometheus-operator
my rbac looks like following
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: prometheus
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
name: prometheus
rules:
- apiGroups: [""]
resources:
- nodes
- services
- endpoints
- pods
verbs: ["get", "list", "watch"]
- apiGroups: [""]
resources:
- configmaps
verbs: ["get"]
- nonResourceURLs: ["/metrics"]
verbs: ["get"]
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
name: prometheus
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: prometheus
subjects:
- kind: ServiceAccount
name: prometheus
namespace: default
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: prometheus-k8s
rules:
- apiGroups:
- ""
resources:
- nodes/metrics
verbs:
- get
- nonResourceURLs:
- /metrics
verbs:
- get
If some config file is missing please let me know and I'll add it.

Answer 1

Add the below params to kubelet config on each workder node
--authentication-token-webhook=true
--extra-config=kubelet.authorization-mode=Webhook
then run the below commands
systemctl daemon-reload
systemctl restart kubelet