add grafana and clickhoue deployment file

build/yamls/flow-visibility/README.md

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+Altinity Clickhouse operator is used to handle deployment of Clickhouse, run following command to create components for operator:
+
+```shell script
+kubectl apply -f https://raw.githubusercontent.com/Altinity/clickhouse-operator/master/deploy/operator/clickhouse-operator-install-bundle.yaml
+```
+
+Then we are able to create deployments for Clickhouse and Grafana:
+
+```shell script
+kubectl apply -f build/yamls/flow-visibility/flow-visibility.yaml
+```
+
+Grafana dashboard is exposed as a Nodeport Service, which can be accessed via
+`http://[NodeIP]: [ServicePort]`.

build/yamls/flow-visibility/flow-visibility.yaml

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+apiVersion: v1
+kind: Namespace
+metadata:
+  labels:
+    app: flow-visibility
+  name: flow-visibility
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  labels:
+    app: flow-visibility
+  name: flow-visibility
+  namespace: flow-visibility
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  labels:
+    app: flow-visibility
+  name: grafana-role
+  namespace: flow-visibility
+rules:
+  - apiGroups:
+      - ""
+    resources:
+      - services
+    verbs:
+      - get
+      - list
+      - watch
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  labels:
+    app: flow-visibility
+  name: grafana-role-binding
+  namespace: flow-visibility
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: grafana-role
+subjects:
+  - kind: ServiceAccount
+    name: grafana
+---
+apiVersion: storage.k8s.io/v1
+kind: StorageClass
+metadata:
+  name: grafana-storage
+provisioner: kubernetes.io/no-provisioner
+volumeBindingMode: WaitForFirstConsumer
+reclaimPolicy: Delete
+allowVolumeExpansion: True
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: grafana-pvc
+  namespace: flow-visibility
+spec:
+  storageClassName: grafana-storage
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 1Gi
+---
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: grafana-pv
+  namespace: flow-visibility
+spec:
+  storageClassName: grafana-storage
+  capacity:
+    storage: 2Gi
+  accessModes:
+    - ReadWriteOnce
+  hostPath:
+    path: "/data/grafana"
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: grafana-datasource
+  namespace: flow-visibility
+data:
+  datasource.yaml: |-
+    apiVersion: 1
+    datasources:
+      - name: ClickHouse
+        type: vertamedia-clickhouse-datasource
+        access: proxy
+        url: http://clickhouse-clickhouse.flow-visibility.svc:8123
+        editable: true
+        jsonData:
+          useYandexCloudAuthorization: true
+          xHeaderUser: clickhouse_operator
+          xHeaderKey: clickhouse_operator_password
+---
+apiVersion: clickhouse.altinity.com/v1
+kind: ClickHouseInstallation
+metadata:
+  name: clickhouse
+  namespace: flow-visibility
+spec:
+  configuration:
+    clusters:
+      - name: clickhouse
+        layout:
+          shardsCount: 1
+          replicasCount: 1
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: grafana
+  name: grafana
+  namespace: flow-visibility
+spec:
+  selector:
+    matchLabels:
+      app: grafana
+  template:
+    metadata:
+      labels:
+        app: grafana
+    spec:
+      securityContext:
+        fsGroup: 472
+        supplementalGroups:
+          - 0
+      containers:
+        - name: grafana
+          image: grafana/grafana:7.5.2
+          imagePullPolicy: IfNotPresent
+          env:
+            - name: GF_INSTALL_PLUGINS
+              value: "https://github.com/zyiou/grafana-custom-plugin/releases/download/1.0.5/grafana-custom-plugin.zip;dewyeo-grafana-custom-plugin,vertamedia-clickhouse-datasource"
+          ports:
+            - containerPort: 3000
+              name: http-grafana
+              protocol: TCP
+          readinessProbe:
+            failureThreshold: 3
+            httpGet:
+              path: /robots.txt
+              port: 3000
+              scheme: HTTP
+            initialDelaySeconds: 10
+            periodSeconds: 30
+            successThreshold: 1
+            timeoutSeconds: 2
+          livenessProbe:
+            failureThreshold: 3
+            initialDelaySeconds: 30
+            periodSeconds: 10
+            successThreshold: 1
+            tcpSocket:
+              port: 3000
+            timeoutSeconds: 1
+          resources:
+            requests:
+              cpu: 250m
+              memory: 750Mi
+          volumeMounts:
+            - mountPath: /data
+              name: grafana-pv
+            - mountPath: /etc/grafana/provisioning/datasources
+              name: grafana-datasources
+      volumes:
+        - name: grafana-pv
+          persistentVolumeClaim:
+            claimName: grafana-pvc
+        - name: grafana-datasources
+          configMap:
+            name: grafana-datasource
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: grafana
+  namespace: flow-visibility
+spec:
+  ports:
+    - port: 3000
+      protocol: TCP
+      targetPort: http-grafana
+  selector:
+    app: grafana
+  sessionAffinity: None
+  type: LoadBalancer

build/yamls/flow-visibility/grafana-custom-plugin/CHANGELOG.md

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+# Changelog
+
+## 1.0.0 (Unreleased)
+
+Initial release.