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ClickHouse

ClickHouse is an open source column-oriented database management system capable of real time generation of analytical data reports using SQL queries.

Introduction

This chart bootstraps a ClickHouse replication cluster deployment on a Kubernetes cluster using the Helm package manager.

Prerequisites

  • Kubernetes 1.10+
  • PV provisioner support in the underlying infrastructure

Installing the Chart

helm repo add lohmag https://lohmag.github.io/helm-charts/
helm repo update
helm install clickhouse lohmag/clickhouse

Uninstalling the Chart

To uninstall/delete the clickhouse deployment:

$ helm delete --purge clickhouse

Configuration

Create replicated ClickHouse environment. I want it to be minimalistic, without any 3-rd party apps.
It uses official clickhouse image with server and client inside.
It can use build-in zookeeper or external one.
If you use just one replica, zookeeper can be turned off at all - by setting zookeeper.enabled=false and externalZookeeper.enabled=false in values.yaml.
If you want to use helm build-in zookeeper you need to set clusterDomain of your k8s.
Default clickhouse user default with no password.
All configuration done through configmaps.

For more information please refer to the (https://github.com/lohmag/helm-charts/tree/master/clickhouse).

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helm-charts's Issues

Error when trying to install the chart

I get the following error when I try to install the chart:

Error: validation failed: unable to recognize "": no matches for kind "StatefulSet" in version "apps/v1beta2"

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