starrocks-kubernetes-operator

Mount external configMaps or secrets

StarRocks Kubernetes Operator supports mounting multiple external configmaps or secrets into StarRocks. This document describes how to mount configmaps into StarRocks.

You can mount secrets in the same way.

1. Mount configMaps by starRocks CRD YAML file

You can specify configMaps in the corresponding component spec. The following is an example

apiVersion: starrocks.com/v1
kind: StarRocksCluster
metadata:
  name: kube-starrocks
  namespace: kb-system
spec:
  starRocksFeSpec:
    image: "starrocks/fe-ubuntu:2.5.4"
    replicas: 1
    configMaps:
      - name: my-configmap
        mountPath: /etc/my-configmap
  starRocksBeSpec:
    image: "starrocks/be-ubuntu:2.5.4"
    replicas: 1
    configMaps:
      - name: my-configmap
        mountPath: /etc/my-configmap

Note: The specific ConfigMap resources should be available in kubernetes cluster before enabling this feature.

2. Mount configMaps by helm chart

By using Helm chart, you can also mount multiple external configmaps into StarRocks. You can specify configMaps in the corresponding component spec. The following is an example by using kube-starrocks Helm chart.

starrocks:
  starrocksBeSpec:
    configMaps:
      # mount the whole configmap `my-configmap` to `/etc/my-configmap`
      - name: my-configmap
        mountPath: /etc/my-configmap

  # a configmap named `my-configmap` will be created with the following content.
  configMaps:
  - name: my-configmap
    data:
      key.conf: |
        this is the content of the configmap
        when mounted, key will be the name of the file

3. Mount configMaps to a subPath by Helm Chart

You can also mount external configmaps into StarRocks with a subPath. The following is an example by using kube-starrocks Helm chart.

starrocks:
  starrocksBeSpec:
    configMaps:
      # mount the file `key.conf` in configmap `my-configmap` to `/opt/starrocks/be/conf/key.conf`
      - name: my-configmap
        mountPath: /opt/starrocks/be/conf/key.conf
        subPath: key.conf

  # a configmap named `my-configmap` will be created with the following content.
  configMaps:
  - name: my-configmap
    data:
      key.conf: |
        this is the content of the configmap
        when mounted, key will be the name of the file

In /opt/starrocks/be/conf, the original file if existed will be overwritten, but other files will not be affected.

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