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/mod_proxy_wstunnel.so
</ifModule>
AllowEncodedSlashes NoDecode
ProxyPreserveHost On
# static html, js, images, etc. served from loolwsd
# loleaflet is the client part of LibreOffice Online
ProxyPass /loleaflet https://127.0.0.1:9980/loleaflet retry=0
ProxyPassReverse /loleaflet https://127.0.0.1:9980/loleaflet
# WOPI discovery URL
ProxyPass /hosting/discovery https://127.0.0.1:9980/hosting/discovery retry=0
ProxyPassReverse /hosting/discovery https://127.0.0.1:9980/hosting/discovery
# Main websocket
ProxyPass /lool/ws wss://127.0.0.1:9980/lool/ws
ProxyPassMatch /lool/(.*)/ws$ wss://127.0.0.1:9980/lool/$1/ws nocanon
# Admin Console websocket
ProxyPass /lool/adminws wss://127.0.0.1:9980/lool/adminws
# Download as, Fullscreen presentation and Image upload operations
ProxyPass /lool https://127.0.0.1:9980/lool
ProxyPassReverse /lool https://127.0.0.1:9980/lool
Add the WOPI configuration to /etc/roundcubemail/config.inc.php:
$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.