mirror of
https://github.com/ClickHouse/ClickHouse.git
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136 lines
3.6 KiB
Markdown
136 lines
3.6 KiB
Markdown
# Getting started
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## System requirements
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This is not a cross-platform system. It requires Linux Ubuntu Precise (12.04) or newer, with x86_64 architecture and support for the SSE 4.2 instruction set.
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To check for SSE 4.2:
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```bash
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grep -q sse4_2 /proc/cpuinfo && echo "SSE 4.2 supported" || echo "SSE 4.2 not supported"
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```
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We recommend using Ubuntu Trusty, Ubuntu Xenial, or Ubuntu Precise.
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The terminal must use UTF-8 encoding (the default in Ubuntu).
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## Installation
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For testing and development, the system can be installed on a single server or on a desktop computer.
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### Installing from packages for Debian/Ubuntu
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In `/etc/apt/sources.list` (or in a separate `/etc/apt/sources.list.d/clickhouse.list` file), add the repository:
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```text
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deb http://repo.yandex.ru/clickhouse/deb/stable/ main/
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```
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If you want to use the most recent test version, replace 'stable' with 'testing'.
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Then run:
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```bash
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sudo apt-key adv --keyserver keyserver.ubuntu.com --recv E0C56BD4 # optional
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sudo apt-get update
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sudo apt-get install clickhouse-client clickhouse-server
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```
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You can also download and install packages manually from here: <https://repo.yandex.ru/clickhouse/deb/stable/main/>.
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ClickHouse contains access restriction settings. They are located in the 'users.xml' file (next to 'config.xml').
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By default, access is allowed from anywhere for the 'default' user, without a password. See 'user/default/networks'.
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For more information, see the section "Configuration files".
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### Installing from sources
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To compile, follow the instructions: build.md
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You can compile packages and install them.
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You can also use programs without installing packages.
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```text
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Client: dbms/src/Client/
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Server: dbms/src/Server/
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```
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For the server, create a catalog with data, such as:
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```text
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/opt/clickhouse/data/default/
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/opt/clickhouse/metadata/default/
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```
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(Configurable in the server config.)
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Run 'chown' for the desired user.
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Note the path to logs in the server config (src/dbms/src/Server/config.xml).
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### Other installation methods
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Docker image: <https://hub.docker.com/r/yandex/clickhouse-server/>
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RPM packages for CentOS or RHEL: <https://github.com/Altinity/clickhouse-rpm-install>
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Gentoo overlay: <https://github.com/kmeaw/clickhouse-overlay>
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## Launch
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To start the server (as a daemon), run:
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```bash
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sudo service clickhouse-server start
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```
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See the logs in the `/var/log/clickhouse-server/ directory.`
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If the server doesn't start, check the configurations in the file `/etc/clickhouse-server/config.xml.`
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You can also launch the server from the console:
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```bash
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clickhouse-server --config-file=/etc/clickhouse-server/config.xml
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```
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In this case, the log will be printed to the console, which is convenient during development.
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If the configuration file is in the current directory, you don't need to specify the '--config-file' parameter. By default, it uses './config.xml'.
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You can use the command-line client to connect to the server:
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```bash
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clickhouse-client
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```
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The default parameters indicate connecting with localhost:9000 on behalf of the user 'default' without a password.
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The client can be used for connecting to a remote server. Example:
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```bash
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clickhouse-client --host=example.com
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```
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For more information, see the section "Command-line client".
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Checking the system:
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```bash
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milovidov@hostname:~/work/metrica/src/dbms/src/Client$ ./clickhouse-client
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ClickHouse client version 0.0.18749.
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Connecting to localhost:9000.
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Connected to ClickHouse server version 0.0.18749.
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:) SELECT 1
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SELECT 1
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┌─1─┐
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│ 1 │
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└───┘
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1 rows in set. Elapsed: 0.003 sec.
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:)
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```
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**Congratulations, the system works!**
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To continue experimenting, you can try to download from the test data sets.
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