[deployment] add Digitalocean k8s Deploy Config

kube/elasticsearch/elasticsearch-deployment.yaml

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+# elasticsearch-deployment.yaml
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: elasticsearch
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: elasticsearch
+  template:
+    metadata:
+      labels:
+        app: elasticsearch
+    spec:
+      initContainers:
+        - name: init-permissions
+          image: busybox
+          command: [ "sh", "-c", "chown -R 1000:1000 /usr/share/elasticsearch/data" ]
+          volumeMounts:
+            - name: es-data
+              mountPath: /usr/share/elasticsearch/data
+      containers:
+        - name: elasticsearch
+          image: docker.elastic.co/elasticsearch/elasticsearch:7.17.0
+          resources:
+            requests:
+              cpu: "1"
+              memory: "4Gi"
+            limits:
+              cpu: "2"
+              memory: "6Gi"
+          ports:
+            - containerPort: 9200
+              name: http
+            - containerPort: 9300
+              name: transport
+          volumeMounts:
+            - name: es-data
+              mountPath: /usr/share/elasticsearch/data
+            - name: elasticsearch-config
+              mountPath: /usr/share/elasticsearch/config/elasticsearch.yml
+              subPath: elasticsearch.yml
+          env:
+            - name: discovery.type
+              value: single-node
+            - name: ELASTIC_USERNAME
+              valueFrom:
+                secretKeyRef:
+                  name: elasticsearch
+                  key: username
+            - name: ELASTIC_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: elasticsearch
+                  key: password
+      volumes:
+        - name: es-data
+          persistentVolumeClaim:
+            claimName: es-pvc
+        - name: elasticsearch-config
+          configMap:
+            name: elasticsearch-config
+---
+# Elasticsearch Configuration
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: elasticsearch-config
+data:
+  elasticsearch.yml: |
+    xpack.security.enabled: true
+    xpack.license.self_generated.type: basic
+    network.host: 0.0.0.0
+---
+# Elasticsearch Persistent Volume
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: es-pv
+spec:
+  capacity:
+    storage: 80Gi
+  accessModes:
+    - ReadWriteOnce
+  hostPath:
+    path: /mnt/data/es
+---
+# Elasticsearch Persistent Volume Claim
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: es-pvc
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 80Gi
+
+---
+# Elasticsearch Service
+apiVersion: v1
+kind: Service
+metadata:
+  name: elasticsearch
+spec:
+  ports:
+    - port: 9200
+  selector:
+    app: elasticsearch

kube/elasticsearch/kibana-deployment.yaml

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+# kibana-deployment.yaml
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: kibana
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: kibana
+  template:
+    metadata:
+      labels:
+        app: kibana
+    spec:
+      containers:
+        - name: kibana
+          image: docker.elastic.co/kibana/kibana:7.17.0
+          resources:
+            requests:
+              cpu: "0.5"
+              memory: "2Gi"
+            limits:
+              cpu: "1"
+              memory: "2Gi"
+          ports:
+            - containerPort: 5601
+          volumeMounts:
+            - name: kibana-config
+              mountPath: /usr/share/kibana/config/kibana.yml
+              subPath: kibana.yml
+          env:
+            - name: ELASTICSEARCH_HOSTS
+              value: "http://elasticsearch:9200"
+            - name: ES_USERNAME
+              valueFrom:
+               secretKeyRef:
+                 name: elasticsearch
+                 key: username
+            - name: ES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: elasticsearch
+                  key: password
+      volumes:
+        - name: kibana-config
+          configMap:
+            name: kibana-config
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: kibana-config
+data:
+  kibana.yml: |
+    server.name: kibana
+    server.host: "0.0.0.0"
+    elasticsearch.hosts: ["http://elasticsearch:9200"]
+    elasticsearch.username: "${ES_USERNAME}"
+    elasticsearch.password: "${ES_PASSWORD}"
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: kibana
+spec:
+  type: NodePort
+  selector:
+    app: kibana
+  ports:
+    - protocol: TCP
+      port: 5601
+      targetPort: 5601
+      nodePort: 31000