使用 Helm Chart 部署分布式 GreptimeDB

# 在values.yaml文件中设置默认值
replicaCount: 3
image:
  repository: timescale/greptime-kubernetes
  tag: 0.7.0-beta.1
  pullPolicy: IfNotPresent
service:
  type: ClusterIP
  port: 5432
pod:
  resources:
    limits:
      cpu: 1000m
      memory: 2Gi
    requests:
      cpu: 100m
      memory: 200Mi
  nodeSelector: {}
  tolerations: []
  affinity: {}
 
# 在Helm模板文件中使用这些值
apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ .Values.nameOverride }}-greptime-deployment
spec:
  replicas: {{ .Values.replicaCount }}
  selector:
    matchLabels:
      app: {{ .Values.nameOverride }}-greptime-app
  template:
    metadata:
      labels:
        app: {{ .Values.nameOverride }}-greptime-app
    spec:
      containers:
        - name: {{ .Values.nameOverride }}-greptime-container
          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
          imagePullPolicy: {{ .Values.image.pullPolicy }}
          ports:
            - containerPort: 5432
          resources:
{{ toYaml .Values.pod.resources | indent 12 }}
          env:
            - name: POSTGRES_DB
              value: greptime
            - name: POSTGRES_USER
              value: greptime
            - name: POSTGRES_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: {{ .Values.nameOverride }}-greptime-secret
                  key: password
      affinity:
{{ toYaml .Values.pod.affinity | indent 8 }}
      tolerations:
{{ toYaml .Values.pod.tolerations | indent 8 }}
      nodeSelector:
{{ toYaml .Values.pod.nodeSelector | indent 8 }}
 
---
apiVersion: v1
kind: Service
metadata:
  name: {{ .Values.nameOverride }}-greptime-service
spec:
  type: {{ .Values.service.type }}
  ports:
    - port: {{ .Values.service.port }}
      targetPort: 5432
  selector:
    app: {{ .Values.nameOverride }}-greptime-app

这个代码实例展示了如何在Helm模板中使用values.yaml文件中定义的变量来设置一个分布式GreptimeDB的部署和服务。这里使用了toYaml和indent函数来正确地插入嵌套的YAML结构。这样的实践可以使模板更加清晰和可维护。