Problem with RBAC?

[fzerorubigd]

Failed with RBAC enabled cluster (1.7 in my case)
fluentd-elasticsearch is failed with this :

2017-08-27 10:20:21 +0000 [error]: config error file="/etc/td-agent/td-agent.conf" error="Exception encountered fetching metadata from Kubernetes API endpoint: 403 Forbidden"
2017-08-27 10:20:21 +0000 [warn]: process died within 1 second. exit.

The only thing I change is Namespace (via NAMESPACE env) .

[polasekr]

Create following authorization in kubernetes and run the container with the service account specified.

---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: fluentd
  namespace: system

---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
  name: fluentd
  namespace: system
rules:
- apiGroups:
  - ""
  resources:
  - pods
  verbs:
  - get
  - list
  - watch

---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: fluentd
roleRef:
  kind: ClusterRole
  name: fluentd
  apiGroup: rbac.authorization.k8s.io
subjects:
- kind: ServiceAccount
  name: fluentd
  namespace: system

In order to run deamonset under fluentd account you need to add clause serviceAccountName to fluentd yaml file:

apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: fluentd-elasticsearch
  labels:
    k8s-app: fluentd-logging
spec:
  template:
    metadata:
      labels:
        k8s-app: fluentd-logging
        name: fluentd-logging
    spec:
      containers:
      - name: fluentd-elasticsearch
        image: kayrus/fluentd-elasticsearch:1.20
        imagePullPolicy: Always
        # suppress "info" log level
        args:
          - -q
        resources:
          limits:
            memory: 1024Mi
          requests:
            cpu: 100m
            memory: 1024Mi
        volumeMounts:
        - name: var-log
          mountPath: /var/log
        - name: run-log
          mountPath: /run/log
        - name: var-lib-docker-containers
          mountPath: /var/lib/docker/containers
          readOnly: true
        - name: localdata-docker-containers
          mountPath: /localdata/docker/containers
          readOnly: true
        - name: fluentd-config
          mountPath: /etc/td-agent
          readOnly: true
      terminationGracePeriodSeconds: 30
      serviceAccountName: fluentd
      volumes:
      - name: var-log
        hostPath:
          path: /var/log
      - name: run-log
        hostPath:
          path: /run/log
      - name: var-lib-docker-containers
        hostPath:
          path: /var/lib/docker/containers
      - name: localdata-docker-containers
        hostPath:
          path: /localdata/docker/containers
      - name: fluentd-config
        configMap:
           name: fluentd-config

[kayrus]

@polasekr thank you for a tip. However I'm aware about this issue and there is a pull request. #12