Documentation for Crowd 2.9. Documentation for earlier versions of Crowd is available too.

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This page provides instructions on how to install the Crowd Apache connector on a computer using CentOS Linux. These instructions are part of the guide to integrating Crowd with Apache.

The intent of these instructions is to take you from a default OS installation to a working Apache/Subversion/Crowd integration as easily as possible. We assume a fresh installation. If you are an experienced Linux system administrator you need not follow these instructions to the letter.

1. Determine which Package You Need

Identify the package you require by looking up your version of CentOS Linux and your processor architecture in the table below.

If you are unsure of your processor architecture, you can determine it by entering the command "uname -p" in a terminal.

CentOS Linux Version





Build from source*


Build from source*


Build from source*

Build from source*

Build from source*

* 'Build from source' means that there is no binary package available for your platform. Rather than following the instructions on this page, you should follow the instructions for installing the Crowd Apache Connector on other UNIX-like systems.

2. Install the Crowd Apache Connector Packages

  1. Download the package by entering the following command at a terminal, substituting PACKAGE_RELATIVE_URLwith the appropriate relative URL from the table in step 1:

  2. Start installation of the package by entering the following command at a terminal, substituting PACKAGE_FILEwith the filename component of the package URL:

    su -c "yum -y --nogpgcheck install PACKAGE_FILE"
  3. When prompted, enter the root user password.
  4. Everything you need should now be installed and Apache should restart. If Apache fails to start, check the /var/log/httpd/error_log file.

Now that the software is installed, the next step is to configure Apache authentication.

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  1. To find out your CentOS version just run:

    cat /etc/issue

    You should see something like this:

    CentOS release 5.6 (Final)
    Kernel \r on an \m
  2. Anonymous

    I can't find resource 'centos5.5/mod_authnz_crowd-2.0.1-1.x86_64.rpm'! somebody who can tell me which site i can download it. thanks very much.

  3. Are there any plans for supporting CentOs 6.x?

  4. Anonymous

    please can u explain me what is the use of crowd Apache tool as i m new to this Linux platform


    1. Hi Anonymous, have you looked at Integrating Crowd with Apache? You can set up Crowd to act as the authentication mechanism for your Apache server, if you are using one.

  5. Anonymous

    I get this error;


    [root@## tmp]# su -c "yum -y --nogpgcheck install mod_authnz_crowd-2.0.1-1.x86_64.rpm"

    Loaded plugins: priorities, security, update-motd,

                  : upgrade-helper

    amzn-main                    | 2.1 kB     00:00

    amzn-updates                 | 2.3 kB     00:00

    21 packages excluded due to repository priority protections

    Setting up Install Process

    Examining mod_authnz_crowd-2.0.1-1.x86_64.rpm: mod_authnz_crowd-2.0.1-1.x86_64

    mod_authnz_crowd-2.0.1-1.x86_64.rpm: does not update installed package.

    Error: Nothing to do