03-persistent-volume-09-with-template-emptydir.yaml

---
apiVersion: clickhouse.altinity.com/v1
kind: ClickHouseInstallationTemplate
metadata:
  name: instance-store-emptydir-template
spec:
  templating:
    policy: auto
    chiSelector:
      clickhouse.altinity.com/chi: s3-cache-via-template

  templates:
    podTemplates:
      - name: pod-template
        spec:
          volumes:
            - name: clickhouse-nvme-cache
              emptyDir: {}

          containers:
            - name: clickhouse-pod
              # CHIT have more priority than CHI, and override whole volumeMounts section
              volumeMounts:
                - name: data-storage-vc-template-1
                  mountPath: /var/lib/clickhouse
                - name: clickhouse-nvme-cache
                  mountPath: /var/lib/clickhouse/disks/s3_cache/

---
apiVersion: "clickhouse.altinity.com/v1"
kind: "ClickHouseInstallation"
metadata:
  name: "s3-cache-via-template"
  labels:
    clickhouse.altinity.com/chi: s3-cache-via-template
spec:
  configuration:
    clusters:
      - name: "cluster"
        templates:
          podTemplate: pod-template
        layout:
          shardsCount: 1
          replicasCount: 1
    files:
      config.d/storage_configuration.xml: |
        <clickhouse>
            <storage_configuration>
                <disks>
                    <s3_disk>
                        <type>s3</type>
                        <endpoint>https://sample-bucket.s3.amazonaws.com/s3_disk/{replica}</endpoint>
                        <access_key_id>your_access_key_id</access_key_id>
                        <secret_access_key>your_secret_access_key</secret_access_key>
                        <region>us-east-2</region>
                        <metadata_path>/var/lib/clickhouse/disks/s3_disk/</metadata_path>
                    </s3_disk>
                    <s3_cache>
                        <type>cache</type>
                        <disk>s3_disk</disk>
                        <path>/var/lib/clickhouse/disks/s3_cache/</path>
                        <max_size>10Gi</max_size>
                    </s3_cache>
                </disks>
                <policies>
                  <s3_only>
                      <volumes>
                          <main>
                              <disk>s3_disk</disk>
                          </main>
                      </volumes>
                  </s3_only>
                  <s3_cache>
                      <volumes>
                          <main>
                              <disk>s3_cache</disk>
                          </main>
                      </volumes>
                  </s3_cache>
                  <s3_cache_tiered>
                      <volumes>
                          <hot>
                              <disk>default</disk>
                          </hot>
                          <cold>
                              <disk>s3_cache</disk>
                          </cold>
                      </volumes>
                  </s3_cache_tiered>
              </policies>
            </storage_configuration>
        </clickhouse>
  templates:
    podTemplates:
      - name: pod-template
        spec:
          containers:
            - name: clickhouse
              image: clickhouse/clickhouse-server:latest
              imagePullPolicy: IfNotPresent
              volumeMounts:
                - name: data-storage-vc-template-1
                  mountPath: /var/lib/clickhouse
              command:
                - clickhouse-server
                - --config-file=/etc/clickhouse-server/config.xml

    volumeClaimTemplates:
      - name: data-storage-vc-template-1
        spec:
          # storageClassName: standard
          accessModes:
            - ReadWriteOnce
          resources:
            requests:
              storage: 10Gi