Installation Instructions for Collabora Online on Enterprise Linux 7

Collaborative editing, using Collabora Online, is an additional function that can be added to the out of the box Kolab 16 installation.

This article outlines how to install Collabora Online to a Kolab 16 installation on CentOS 7 or Red Hat Enterprise Linux 7.

Ensure you have Kolab 16 installed first by following the guide for CentOS 7 or the guide for Red Hat Enterprise Linux 7.

Chwala needs to be updated to the latest version; 0.5.3 or later:

# yum update chwala

Install the extra repository configuration:

# yum install kolab-16-extras-collab

Now Collabora Online can be installed directly from the Kolab mirror:

# yum install collabora-online-brand loolwsd mod_ssl

The configuration file needs to be updated:

# vi /etc/loolwsd/loolwsd.xml

As a minimum, edit the values listed below (tag attributes omitted for brevity):

<cert_file_path (...)>/etc/pki/tls/private/localhost.pem</cert_file_path>
<key_file_path (...)>/etc/pki/tls/private/localhost.pem</key_file_path>
<ca_file_path (...)>/etc/pki/tls/private/localhost.pem</ca_file_path>
<username (...)">collabora.admin</username>
<password (...)">My-Long-Password</password>

Make sure to enable and start the loolwsd daemon:

# systemctl enable loolwsd
# systemctl start loolwsd

Configure SSL by adding the following to the bottom of the default <VirtualHost/> in the file /etc/httpd/conf.d/ssl.conf:

SSLProxyEngine On
SSLProxyVerify None
SSLProxyCheckPeerCN Off
SSLProxyCheckPeerName Off
SSLProxyCheckPeerExpire Off

<ifModule !mod_proxy_wstunnel.c>
    LoadModule proxy_wstunnel_module modules/

AllowEncodedSlashes NoDecode

ProxyPreserveHost On

# static html, js, images, etc. served from loolwsd
# loleaflet is the client part of LibreOffice Online
ProxyPass        /loleaflet retry=0
ProxyPassReverse /loleaflet

# WOPI discovery URL
ProxyPass        /hosting/discovery retry=0
ProxyPassReverse /hosting/discovery

# Main websocket
ProxyPass        /lool/ws            wss://
ProxyPassMatch   /lool/(.*)/ws$      wss://$1/ws nocanon

# Admin Console websocket
ProxyPass        /lool/adminws       wss://

# Download as, Fullscreen presentation and Image upload operations
ProxyPass        /lool     
ProxyPassReverse /lool     

Add the WOPI configuration to /etc/roundcubemail/

$config['fileapi_wopi_office'] = 'https://' . $_SERVER['HTTP_HOST'];

To get the ducks in a row, restart the loolws and http daemons:

# systemctl restart loolwsd
# systemctl restart httpd

If your Kolab installation is secured with Let’s encrypt certificates, please use This link.


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