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# 2.5. CentOS

This section describes how to install Groonga related RPM packages on CentOS. You can install them by `yum`.

We distribute both 32-bit and 64-bit packages but we strongly recommend a 64-bit package for server. You should use a 32-bit package just only for tests or development. You will encounter an out of memory error with a 32-bit package even if you just process medium size data.

## 2.5.1. CentOS 7

Install:

    % sudo yum install -y https://packages.groonga.org/centos/7/groonga-release-latest.noarch.rpm
    % sudo yum install -y --enablerepo=epel groonga

Note

`groonga` package is the minimum set of fulltext search engine. If you want to use Groonga for server use, you can install additional preconfigured packages.

There are two packages for server use.

- groonga-httpd (nginx and HTTP protocol based server package)

- groonga-server-gqtp (GQTP protocol based server package)

See Server section about details.

If you want to use MeCab as a tokenizer, install groonga-tokenizer-mecab package.

Install groonga-tokenizer-mecab package:

    % sudo yum install -y --enablerepo=epel groonga-tokenizer-mecab

There is a package that provides Munin plugins. If you want to monitor Groonga status by Munin, install groonga-munin-plugins package.

Install groonga-munin-plugins package:

    % sudo yum install -y --enablerepo=epel groonga-munin-plugins

There is a package that provides MySQL compatible normalizer as a Groonga plugin. If you want to use that one, install groonga-normalizer-mysql package.

Install groonga-normalizer-mysql package:

    % sudo yum install -y --enablerepo=epel groonga-normalizer-mysql

## 2.5.2. Build from source

Install required packages to build Groonga:

    % sudo yum install -y wget tar gcc-c++ make mecab-devel

Download source:

    % wget https://packages.groonga.org/source/groonga/groonga-13.0.0.tar.gz
    % tar xvzf groonga-13.0.0.tar.gz
    % cd groonga-13.0.0

Configure (see configure about `configure` options):

    % ./configure

Build:

    % make -j$(grep '^processor' /proc/cpuinfo | wc -l)

Install:

    % sudo make install