# Installation on RedHat/CentOS

## Organization

LemonLDAP::NG provides these packages:

- lemonldap-ng: meta-package, contains no file but dependencies on other packages
- lemonldap-ng-doc: contains HTML documentation and project docs (README, etc.)
- lemonldap-ng-conf: contains default configuration (DNS domain: example.com)
- lemonldap-ng-test: contains sample CGI test page
- lemonldap-ng-handler: contains Apache Handler implementation (agent)
- lemonldap-ng-manager: contains administration interface and session explorer
- lemonldap-ng-portal: contains authentication portal and menu
- perl-Lemonldap-NG-Common: CPAN - Shared modules
- perl-Lemonldap-NG-Handler: CPAN - Handler modules
- perl-Lemonldap-NG-Manager: CPAN - Manager modules
- perl-Lemonldap-NG-Portal: CPAN - Portal modules

This schema shows the dependencies between modules:

## Get the packages

### YUM repository

You can add this YUM repository to get recent packages:

    vi /etc/yum.repos.d/lemonldap-ng.repo

    [lemonldap-ng]
    name=LemonLDAP::NG packages
    baseurl=http://lemonldap-ng.org/rpm/
    enabled=1
    gpgcheck=1
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-OW2

Change the base URL for EL6 packages:

    baseurl=http://lemonldap-ng.org/rpm6/

Change the base URL for EL7 packages:

    baseurl=http://lemonldap-ng.org/rpm7/

Run this to update packages cache:

    yum update

You must also install the EPEL repository for non-core dependencies. See prerequisites and dependencies chapter for more.

### Manual download

RPMs are available on the Download page.

## Package GPG signature

The GPG key can be downloaded here: rpm-gpg-key-ow2

Install it to trust RPMs:

    rpm --import rpm-gpg-key-ow2

## Install packages

### With YUM

If the packages are stored in a yum repository:

    yum install lemonldap-ng

    Transaction Summary
    ===================================================
    Install      82 Package(s)
    Upgrade       0 Package(s)

    Total download size: 18 M
    Is this ok [y/N]: y

You can also use yum on local RPMs file:

    yum localinstall lemonldap-ng-* perl-Lemonldap-NG-*

### With RPM

Before installing the packages, install all dependencies.

You have then to install all the downloaded packages:

    rpm -Uvh lemonldap-ng-* perl-Lemonldap-NG-*

You can choose to install only one component by choosing the package `lemonldap-ng-portal`, `lemonldap-ng-handler` or `lemonldap-ng-manager`.

Install the package `lemonldap-ng-conf` on all server which contains one of those packages.

If you install packages on 64bits system, create those symbolic links:

    ln -s /usr/lib/perl5/vendor_perl/5.8.8/Lemonldap /usr/lib64/perl5/
    ln -s /usr/lib/perl5/vendor_perl/5.8.8/auto/Lemonldap /usr/lib64/perl5/auto/

## First configuration steps

### Change default DNS domain

By default, DNS domain is `example.com`. You can change it quick with a sed command. For example, we change it to `ow2.org`:

    sed -i 's/example\.com/ow2.org/g' /etc/lemonldap-ng/* /var/lib/lemonldap-ng/conf/lmConf-1 /var/lib/lemonldap-ng/test/index.pl

### Apache virtual host

If LL::NG is the only software installed in Apache, the virtual host feature may not have already been activated.

To do it, uncomment the `NameVirtualHost` line in `/etc/httpd/conf.d/z-lemonldap-ng-handler.conf`:

    NameVirtualHost *:80

Check Apache configuration and restart:

    apachectl configtest
    apachectl restart

### Default virtual host

Apache on RedHat comes with a default virtual host:

    <LocationMatch "^/+$">
    Options -Indexes
    ErrorDocument 403 /.noindex.html
    </LocationMatch>

This conflicts with LemonLDAP::NG ErrorDocument configuration, so you need to comment this part of the vhost. If you have an apache fresh install, it can be a good idea to completely disable the welcome vhost.

### Reload virtual host

To allow the manager to reload the configuration, register the reload virtual host name in the hosts of the server:

    echo "127.0.0.1 reload.example.com" >> /etc/hosts

Adapt the reload virtual host name to the domain you configured.

### Upgrade

If you upgraded LL::NG, check all upgrade notes.

For apache configuration, you may have to remove the old symbolic link, if not done by the RPM:

    rm -f /etc/httpd/conf.d/z-lemonldap-ng.conf

Your old Apache configuration should have been saved, you need to port your specificities in new Apache configuration files:

    vi /etc/lemonldap-ng/apache2.conf.rpmsave

The upgrade process will also have migrate old configuration files into `/etc/lemonldap-ng/lemonldap-ng.ini`. This includes the application list which is now set in the `applicationList` parameter from `[portal]` section, for example:

    [portal]
    applicationList={ 'Menu' => { type => 'category', 'Example' => { type => 'category', 'test1' => { type => 'application', options => { name => 'Application Test 1', uri => 'http://test1.example.com/', description => 'A simple application displaying authenticated user', logo => 'wheels.png', display => 'auto',  }, },'test2' => { type => 'application', options => { name => 'Application Test 2', uri => 'http://test2.example.com/', description => 'The same simple application displaying authenticated user', logo => 'wheels.png', display => 'auto',  }, }, },'Administration' => { type => 'category', 'manager' => { type => 'application', options => { name => 'WebSSO Manager', uri => 'http://manager.example.com/', description => 'Configure LemonLDAP::NG WebSSO', logo => 'tools.png', display => 'on',  }, },'sessions' => { type => 'application', options => { name => 'Sessions explorer', uri => 'http://manager.example.com/sessions.pl', description => 'Explore WebSSO sessions', logo => 'tools.png', display => 'on',  }, }, },'Documentation' => { type => 'category', 'localdoc' => { type => 'application', options => { name => 'Local documentation', uri => 'http://manager.example.com/doc/', description => 'Documentation supplied with LemonLDAP::NG', logo => 'docs.png', display => 'on',  }, },'officialwebsite' => { type => 'application', options => { name => 'Offical Website', uri => 'http://wiki.lemonldap.objectweb.org/xwiki/bin/view/NG/Presentation', description => 'Official LemonLDAP::NG Website', logo => 'web.png', display => 'on',  }, }, }, }, }

You should now use the Manager to configure all applications and categories, and then comment or remove the `applicationList` parameter from `/etc/lemonldap-ng/lemonldap-ng.ini`.

### DNS

Configure your DNS server to resolve names with your server IP.

For tests with `example.com`, launch the following :

    cat /etc/lemonldap-ng/for_etc_hosts >> /etc/hosts

Follow the next steps

## File location

- Configuration is in /etc/lemonldap-ng
- LemonLDAP::NG configuration (edited by the Manager) is in /var/lib/lemonldap-ng/conf/
- All Perl modules are in the VENDOR perl directory
- All Perl scripts/pages are in /var/lib/lemonldap-ng/
- All static content (examples, CSS, images, etc.) is in /usr/share/lemonldap-ng/

## Build your packages

If you need it, you can rebuild RPMs:

- Install rpm-build package
- Install all build dependencies (see BuildRequires in lemonldap-ng.spec)
- Put LemonLDAP::NG tarball in %_topdir/SOURCES
- Edit ~/.rpmmacros and set your build parameters (example for RHEL5):

    %_topdir /home/user/build
    %dist .el5
    %rhel 5

- Go to %_topdir
- Build:

    rpmbuild -ta SOURCES/lemonldap-ng-VERSION.tar.gz