Add support for node level logging

Change-Id: Ib5b2240de3276164fe9e272bf36f0d1f89f409c0
Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

2 files changed, 107 insertions, 7 deletions

diff --git a/clover/logging/install/fluentd-daemonset-elasticsearch-rbac.yaml b/clover/logging/install/fluentd-daemonset-elasticsearch-rbac.yaml
new file mode 100644
index 0000000..445db26
--- /dev/null
+++ b/clover/logging/install/fluentd-daemonset-elasticsearch-rbac.yaml
@@ -0,0 +1,96 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: fluentd
+  namespace: kube-system
+
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRole
+metadata:
+  name: fluentd
+  namespace: kube-system
+rules:
+- apiGroups:
+  - ""
+  resources:
+  - pods
+  - namespaces
+  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: kube-system
+---
+apiVersion: extensions/v1beta1
+kind: DaemonSet
+metadata:
+  name: fluentd
+  namespace: kube-system
+  labels:
+    k8s-app: fluentd-logging
+    version: v1
+    kubernetes.io/cluster-service: "true"
+spec:
+  template:
+    metadata:
+      labels:
+        k8s-app: fluentd-logging
+        version: v1
+        kubernetes.io/cluster-service: "true"
+    spec:
+      serviceAccount: fluentd
+      serviceAccountName: fluentd
+      tolerations:
+      - key: node-role.kubernetes.io/master
+        effect: NoSchedule
+      containers:
+      - name: fluentd
+        image: fluent/fluentd-kubernetes-daemonset:elasticsearch
+        env:
+          - name:  FLUENT_ELASTICSEARCH_HOST
+            value: "elasticsearch.logging"
+          - name:  FLUENT_ELASTICSEARCH_PORT
+            value: "9200"
+          - name: FLUENT_ELASTICSEARCH_SCHEME
+            value: "http"
+          # X-Pack Authentication
+          # =====================
+          - name: FLUENT_ELASTICSEARCH_USER
+            value: "elastic"
+          - name: FLUENT_ELASTICSEARCH_PASSWORD
+            value: "changeme"
+        resources:
+          limits:
+            memory: 200Mi
+          requests:
+            cpu: 100m
+            memory: 200Mi
+        volumeMounts:
+        - name: varlog
+          mountPath: /var/log
+        - name: varlibdockercontainers
+          mountPath: /var/lib/docker/containers
+          readOnly: true
+      terminationGracePeriodSeconds: 30
+      volumes:
+      - name: varlog
+        hostPath:
+          path: /var/log
+      - name: varlibdockercontainers
+        hostPath:
+          path: /var/lib/docker/containers
diff --git a/docs/development/design/logging.rst b/docs/development/design/logging.rst
index 5fbaeb9..2c2dfe6 100644
--- a/docs/development/design/logging.rst
+++ b/docs/development/design/logging.rst
@@ -14,19 +14,23 @@ First, install logging stack Elasticsearch, Fluentd and Kibana::
 
     kubectl apply -f install/logging-stack.yaml
 
-Then configure fluentd for istio::
-
-    kubectl apply -f install/fluentd-istio.yaml
-
-Note that, it must be done in two steps. If you run ``kubectl apply -f install``
-instead, the mixer adapter may fail to intialize because the target service can
-not be found. You may find an error message from mixer container::
+Note that, it must be done in separated steps. If you run ``kubectl apply -f
+install`` instead, the mixer adapter may fail to intialize because the target
+service can not be found. You may find an error message from mixer container::
 
     2018-05-09T02:43:14.435156Z	error	Unable to initialize adapter:
     snapshot='6', handler='handler.fluentd.istio-system', adapter='fluentd',
     err='adapter instantiation error: dial tcp: lookup fluentd-es.logging on
     10.96.0.10:53: no such host'.
 
+Then configure fluentd for istio::
+
+    kubectl apply -f install/fluentd-istio.yaml
+
+Configure fluentd for node level logging::
+
+    kubectl apply -f install/fluentd-daemonset-elasticsearch-rbac.yaml
+
 .. _sample configuration: https://istio.io/docs/tasks/telemetry/fluentd.html
 
 ********