---
title: "About ClickHouse® Managed Databases"
sidebar_label: "About"
description: "About ClickHouse® managed databases, supported versions, and how they work"
sidebar_position: 1
---

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# About ClickHouse® managed databases

:::info

ClickHouse® managed databases are in beta.

:::

Cloud-based ClickHouse® databases are a managed online analytical processing (OLAP) database management system (DBMS) based on ClickHouse®. The DBMS is suitable for real-time data analytical processing. ClickHouse® allows you to execute SQL queries with complex calculations on large datasets.

Learn more about this DBMS in the official [ClickHouse® documentation](https://clickhouse.com/docs).

## Use cases \{#tasks-to-be-solved}

* real-time business intelligence and dashboard creation;
* web and product analytics;
* log and event storage and analysis;
* infrastructure and service monitoring;
* time series analysis.

## Versions \{#versions}

ClickHouse® version 26.3.12.3 is supported.

## How it works \{#principle-of-operation}

To get started, [create a cluster](/managed-databases/clickhouse/create-cluster.mdx). You can create a cluster from:

* in the [control panel](https://my.selectel.ru/vpc/default/dbaas/);
* via the [Managed Databases API](/api/managed-databases/).

A ClickHouse® cluster consists of [node groups](/managed-databases/clickhouse/about-node-groups.mdx). When [creating a cluster](/managed-databases/clickhouse/create-cluster.mdx), you select a [configuration](/managed-databases/clickhouse/configurations.mdx) for each node group, including the number of vCPUs, RAM, and disk size. All nodes in a group will have the same configuration.

Configurations are divided into [lines](/managed-databases/clickhouse/configurations.mdx#configuration-lines). Depending on the line, configurations can be:

* fixed — configurations with different technical specifications that have a fixed resource ratio;
* custom — configurations in which you can specify the resource ratio.

Cloud-based ClickHouse® databases support [sharding](/managed-databases/clickhouse/about-node-groups.mdx#sharding). You can also create a [fault-tolerant cluster](/managed-databases/clickhouse/cluster-fault-tolerance.mdx) with [data replication](/managed-databases/clickhouse/cluster-fault-tolerance.mdx#data-replication).

A ClickHouse® cluster can only be connected to a private subnet. To connect to a cluster from the internet, use a [public IP address](/managed-databases/clickhouse/public-ip.mdx). You can [configure network access to the cluster](/managed-databases/clickhouse/network-access-control.mdx) to filter incoming and outgoing traffic.

[DBMS settings](/managed-databases/clickhouse/settings.mdx) are selected by default when creating a cluster and depend on the cluster configuration. You can change them if necessary.

## How to work with a ClickHouse® managed database \{#manage-clickhouse}

You can work with a ClickHouse® cluster via the [Control panel](https://my.selectel.ru/vpc/default/dbaas/) or [Managed Databases API](/api/managed-databases/).

To start working with a cluster, [connect to it](/managed-databases/clickhouse/connect-to-cluster.mdx) and [create a database](/managed-databases/clickhouse/create-database.mdx).

After creating a cluster, you can:

* track its state using [monitoring](/managed-databases/clickhouse/monitoring.mdx) in the control panel;
* collect and analyze [cluster logs](/managed-databases/clickhouse/logs.mdx);
* [scale the cluster](/managed-databases/clickhouse/resize-cluster.mdx);
* increase [cluster fault tolerance](/managed-databases/clickhouse/cluster-fault-tolerance.mdx);
* [manage shard groups](/managed-databases/clickhouse/manage-shard-groups.mdx).

ClickHouse® is a registered trademark of ClickHouse, Inc. https://clickhouse.com.

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