Grafana 通过在/etc/grafana/provisioning中的配置文件来设置相关参数

因此在K8S中给 grafana 的 deployment 的 配一个 configmap 即可，

deployment.yaml修改如下，

...
volumeMounts:
- mountPath: /etc/grafana/provisioning/datasources
  name: grafana-datasources
  readOnly: false
...
volumes:
- name: grafana-datasources
  configMap:
    name: grafana-datasources
...

configmap.yaml 如下，配置了两个prometheus数据源

apiVersion: v1
kind: ConfigMap
metadata:
  name: grafana-datasources
  namespace: monitoring
data:
  prometheus.yaml: |-
    {
        "apiVersion": 1,
        "datasources": [
            {
               "access":"proxy",
                "editable": true,
                "name": "prometheus",
                "orgId": 1,
                "type": "prometheus-1",
                "url": "http://ip1:8080",
                "version": 1
            },
            {
               "access":"proxy",
                "editable": true,
                "name": "prometheus-2",
                "orgId": 1,
                "type": "prometheus",
                "url": "http://ip2:8080",
                "version": 1
            }
        ]
    }

参考
How To Setup Grafana On Kubernetes
K8S 中的 Grafana 数据持久化