RHEL: 2. Install Neo4j

Graphlytic can use the Neo4j database as data storage of graph data (application settings and data are stored in internal DB outside of Neo4j). You can use an existing Neo4j database or install a new one. If you use an exiting database be advised that Graphlytic creates a couple of indexes in the Neo4j database. Existing data stays unchanged because Graphlytic doesn't execute any change to existing data if it is not required by the user. For better safety and data separation we recommend using a separate Neo4j database to work with Graphlytic. For information about the required version see Requirements.

Install Neo4j

Please see the Neo4j installation manual on how to install Neo4j. It is strictly recommended to follow instructions in the Neo4j manual. Here is a short description of how to install Neo4j but use this description with care.

Install Neo4j as a service

If you don't have a license for Neo4j Enterprise you can use the Neo4j Community edition.

Below is an RPM setup (another option is to download a TAR package file for Linux/Mac from the "Community Server" and then use the systemctl command listed below):

Follow instructions at http://yum.neo4j.org/ or download the rpm file manually and execute this:

$ sudo su -
root:$ cd /tmp/
root:$ rpm -Uvh --nodeps neo4j-3.0.0-1.noarch.rpm
root:$ systemctl enable neo4j.service

Check installation:

root:$ find /etc/rc?.d/ -name "*neo4j*"
 
expected result:
/etc/rc2.d/S99neo4j
/etc/rc3.d/S99neo4j
/etc/rc4.d/S99neo4j
/etc/rc5.d/S99neo4j

Configure Neo4j database

For a complete list of configurations see the Neo4j Configuration manual. We recommend at least check the configuration path to the directory where the Neo4j database is stored.

If you want to change this setting please edit the main configuration file for the server that can be found at conf/neo4j.conf.

Example to set that location on disk of the database directory:

$ sudo su neo4j
neo4j:$ vi /usr/share/neo4j/conf/neo4j.conf
 
in file change line to this:
dbms.directories.data=/var/lib/neo4j