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Install

Helmfile/Helm​

Add the following in your helmfile.yaml.gotmpl or use helm directly with the same parameters, use the up-to-date sample from the release.

ClickHouse​

  - name: clickhouse-secrets
    namespace: kosmos-system-restricted
    chart: ../../clickhouse/clickhouse-secrets
    wait: true
    waitForJobs: true
    labels:
      app: clickhouse

  - name: clickhouse-operator
    namespace: kosmos-system-restricted
    chart: ../../clickhouse/altinity-clickhouse-operator
    needs: [kosmos-system-restricted/clickhouse-secrets]
    wait: true
    labels:
      app: clickhouse
    values:
      - ../../clickhouse/values/values-operator.yaml

  - name: clickhouse-cluster
    namespace: kosmos-logs
    createNamespace: true
    chart: ../../clickhouse/clickhouse
    needs: [kosmos-system-restricted/clickhouse-operator]
    wait: true
    waitForJobs: true
    labels:
      app: clickhouse
    values:
      - ../../clickhouse/values/values-clickhouse.yaml
      - volumeClaim:
          accessModes:
            - ReadWriteOnce
          resources:
            requests:
              storage: 32Gi

Installation with HA​

In order to enable HA, Add Clickhouse-keeper release to your helmfile:

  - name: clickhouse-keeper
    namespace: kosmos-logs
    labels:
      app: clickhouse
    needs:
      - kosmos-system-restricted/clickhouse-operator
    chart: ../../clickhouse/keeper

This will deploy 3 instances of clickhouse-keeper by default.

Add also the following highlighted section in the clickhouse-cluster release to launch Clickhouse with a second replica:

  - name: clickhouse-cluster
    namespace: kosmos-logs
    createNamespace: true
    chart: ../../clickhouse/clickhouse
    needs: [kosmos-system-restricted/clickhouse-operator]
    wait: true
    waitForJobs: true
    labels:
      app: clickhouse
    values:
      - ../../clickhouse/values/values-clickhouse.yaml
      # HA overlay
      - ../../clickhouse/values/values-clickhouse-ha-overlay.yaml
      - volumeClaim:
          accessModes:
            - ReadWriteOnce
          resources:
            requests:
              storage: 32Gi
remarque

Using values-clickhouse-ha-overlay.yaml will create the tables dedicated to logs and audit data storage with the proper replication characteristics.