Changing the default configuration

If you want to change the default configuration, you can perform any modification you want in the $MY_KARAF_HOME/etc directory.

The context server configuration is kept in the $MY_KARAF_HOME/etc/org.apache.unomi.cluster.cfg . It defines the addresses and port where it can be found :

contextserver.address=localhost
contextserver.port=8181
contextserver.secureAddress=localhost
contextserver.securePort=9443

If you need to specify an Elasticsearch cluster name, or a host and port that are different than the default, it is recommended to do this BEFORE you start the server for the first time, or you will loose all the data you have stored previously.

To change these settings, you will need to modify a file called

$MY_KARAF_HOME/etc/org.apache.unomi.persistence.elasticsearch.cfg

with the following contents:

cluster.name=contextElasticSearch
# The elasticSearchAddresses may be a comma seperated list of host names and ports such as
# hostA:9300,hostB:9300
# Note: the port number must be repeated for each host.
elasticSearchAddresses=localhost:9300
index.name=context

Secured events configuration

If you need to secure some events, that will be sent only by a trusted third party server, you can update the file :

$MY_KARAF_HOME/etc/org.apache.unomi.thirdparty.cfg

Ususally, login events, which operate on profiles and do merge on protected properties, must be secured. For each trusted third party server, you need to add these 3 lines :

thirdparty.provider1.key=secret-key
thirdparty.provider1.ipAddresses=127.0.0.1,::1
thirdparty.provider1.allowedEvents=login,download

The events set in allowedEvents will be secured and will only be accepted if the call comes from the specified IP address, and if the secret-key is passed in the X-Unomi-Peer header.

Installing the MaxMind GeoIPLite2 IP lookup database

The Context Server requires an IP database in order to resolve IP addresses to user location. The GeoLite2 database can be downloaded from MaxMind here : http://dev.maxmind.com/geoip/geoip2/geolite2/

Simply download the GeoLite2-City.mmdb file into the “etc” directory.

Installing Geonames database

Context server includes a geocoding service based on the geonames database ( http://www.geonames.org/ ). It can be used to create conditions on countries or cities.

In order to use it, you need to install the Geonames database into . Get the “allCountries.zip” database from here : http://download.geonames.org/export/dump/

Download it and put it in the “etc” directory, without unzipping it. Edit $MY_KARAF_HOME/etc/org.apache.unomi.geonames.cfg and set request.geonamesDatabase.forceImport to true, import should start right away. Otherwise, import should start at the next startup. Import runs in background, but can take about 15 minutes. At the end, you should have about 4 million entries in the geonames index.

REST API Security

The Context Server REST API is protected using JAAS authentication and using Basic or Digest HTTP auth. By default, the login/password for the REST API full administrative access is “karaf/karaf”.

The generated package is also configured with a default SSL certificate. You can change it by following these steps :

  1. Replace the existing keystore in $MY_KARAF_HOME/etc/keystore by your own certificate :

    http://wiki.eclipse.org/Jetty/Howto/Configure_SSL

  2. Update the keystore and certificate password in $MY_KARAF_HOME/etc/custom.properties file :

    org.osgi.service.http.secure.enabled = true
    org.ops4j.pax.web.ssl.keystore=${karaf.etc}/keystore
    org.ops4j.pax.web.ssl.password=changeme
    org.ops4j.pax.web.ssl.keypassword=changeme
    org.osgi.service.http.port.secure=9443

You should now have SSL setup on Karaf with your certificate, and you can test it by trying to access it on port 9443.

  1. Changing the default Karaf password can be done by modifying the etc/users.properties file

  2. You will also need to change the user/password information in the org.apache.unomi.cluster.cfg file :

    cluster.group=default
    cluster.jmxUsername=karaf
    cluster.jmxPassword=karaf
    cluster.jmxPort=1099

Automatic profile merging

The context server is capable of merging profiles based on a common property value. In order to use this, you must add the MergeProfileOnPropertyAction to a rule (such as a login rule for example), and configure it with the name of the property that will be used to identify the profiles to be merged. An example could be the “email” property, meaning that if two (or more) profiles are found to have the same value for the “email” property they will be merged by this action.

Upon merge, the old profiles are marked with a “mergedWith” property that will be used on next profile access to delete the original profile and replace it with the merged profile (aka “master” profile). Once this is done, all cookie tracking will use the merged profile.

To test, simply configure the action in the “login” or “facebookLogin” rules and set it up on the “email” property. Upon sending one of the events, all matching profiles will be merged.

Securing a production environment

Before going live with a project, you should absolutely read the following section that will help you setup a proper secure environment for running your context server.

Step 1: Install and configure a firewall

You should setup a firewall around your cluster of context servers and/or Elasticsearch nodes. If you have an application-level firewall you should only allow the following connections open to the whole world :

All other ports should not be accessible to the world.

For your Context Server client applications (such as the Jahia CMS), you will need to make the following ports accessible :

8181 (Context Server HTTP port) 
9443 (Context Server HTTPS port)

The context server actually requires HTTP Basic Auth for access to the Context Server administration REST API, so it is highly recommended that you design your client applications to use the HTTPS port for accessing the REST API.

The user accounts to access the REST API are actually routed through Karaf’s JAAS support, which you may find the documentation for here :

The default username/password is

karaf/karaf

You should really change this default username/password as soon as possible. To do so, simply modify the following file :

$MY_KARAF_HOME/etc/users.properties

For your context servers, and for any standalone Elasticsearch nodes you will need to open the following ports for proper node-to-node communication : 9200 (Elasticsearch REST API), 9300 (Elasticsearch TCP transport)

Of course any ports listed here are the default ports configured in each server, you may adjust them if needed.

Step 2 : Follow industry recommended best practices for securing Elasticsearch

You may find more valuable recommendations here :

Step 4 : Setup a proxy in front of the context server

As an alternative to an application-level firewall, you could also route all traffic to the context server through a proxy, and use it to filter any communication.

Integrating with an Apache HTTP web server

If you want to setup an Apache HTTP web server in from of Apache Unomi, here is an example configuration using mod_proxy.

In your Unomi package directory, in /etc/org.apache.unomi.cluster.cfg for unomi.apache.org

contextserver.address=unomi.apache.org contextserver.port=80 contextserver.secureAddress=unomi.apache.org contextserver.securePort=443

and you will also need to change the contextserver.domain in the /etc/org.apache.unomi.web.cfg file

contextserver.domain=apache.org

Main virtual host config:

<VirtualHost *:80>
        Include /var/www/vhosts/unomi.apache.org/conf/common.conf
</VirtualHost>

<IfModule mod_ssl.c>
    <VirtualHost *:443>
        Include /var/www/vhosts/unomi.apache.org/conf/common.conf

        SSLEngine on

        SSLCertificateFile    /var/www/vhosts/unomi.apache.org/conf/ssl/24d5b9691e96eafa.crt
        SSLCertificateKeyFile /var/www/vhosts/unomi.apache.org/conf/ssl/apache.org.key
        SSLCertificateChainFile /var/www/vhosts/unomi.apache.org/conf/ssl/gd_bundle-g2-g1.crt


        <FilesMatch "\.(cgi|shtml|phtml|php)$">
                SSLOptions +StdEnvVars
        </FilesMatch>
        <Directory /usr/lib/cgi-bin>
                SSLOptions +StdEnvVars
        </Directory>
        BrowserMatch "MSIE [2-6]" \
                nokeepalive ssl-unclean-shutdown \
                downgrade-1.0 force-response-1.0
        BrowserMatch "MSIE [17-9]" ssl-unclean-shutdown

    </VirtualHost>
</IfModule>

common.conf:

ServerName unomi.apache.org
ServerAdmin webmaster@apache.org

DocumentRoot /var/www/vhosts/unomi.apache.org/html
CustomLog /var/log/apache2/access-unomi.apache.org.log combined
<Directory />
        Options FollowSymLinks
        AllowOverride None
</Directory>
<Directory /var/www/vhosts/unomi.apache.org/html>
        Options FollowSymLinks MultiViews
        AllowOverride None
        Order allow,deny
        allow from all
</Directory>
<Location /cxs>
    Order deny,allow
    deny from all
    allow from 88.198.26.2
    allow from www.apache.org
</Location>

RewriteEngine On
RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK)
RewriteRule .* - [F]
ProxyPreserveHost On
ProxyPass /server-status !
ProxyPass /robots.txt !

RewriteCond %{HTTP_USER_AGENT} Googlebot [OR]
RewriteCond %{HTTP_USER_AGENT} msnbot [OR]
RewriteCond %{HTTP_USER_AGENT} Slurp
RewriteRule ^.* - [F,L]

ProxyPass / http://localhost:8181/ connectiontimeout=20 timeout=300 ttl=120
ProxyPassReverse / http://localhost:8181/

Changing the default tracking location

When performing localhost requests to Apache Unomi, a default location will be used to insert values into the session to make the location-based personalization still work. You can find the default location settings in the file :

org.apache.unomi.plugins.request.cfg

that contains the following default settings:

# The following settings represent the default position that is used for localhost requests
defaultSessionCountryCode=CH
defaultSessionCountryName=Switzerland
defaultSessionCity=Geneva
defaultSessionAdminSubDiv1=2660645
defaultSessionAdminSubDiv2=6458783
defaultSessionIsp=Cablecom
defaultLatitude=46.1884341
defaultLongitude=6.1282508

You might want to change these for testing or for demonstration purposes.

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