Ansible Role: Blazegraph

An Ansible role that installs Blazegraph in a Karaf container on:

• Centos/RHEL 7.x
• Ubuntu Xenial

Role Variables

Available variables are listed below, along with default values:

# Blazegraph version
blazegraph_version: 2.1.4
# User to install with
blazegraph_user: tomcat
# Where to install to
blazegraph_home_dir: /opt/blazegraph
# Servlet container home directory
blazegraph_tomcat_home: /var/lib/tomcat9
# Path to install the WAR to
blazegraph_war_path: "{{ blazegraph_tomcat_home }}/webapps/bigdata.war"
# Log4J template file
blazegraph_log4j_template: log4j.properties
# Log directory
blazegraph_log_dir: /var/log/tomcat9/blazegraph
# Path to install the log4k settings to
blazegraph_log4j_path: "{{ blazegraph_tomcat_home }}/webapps/bigdata/WEB-INF/classes/log4j.properties"

There are additional configuration options available and documented in defaults/main.yml

Dependencies

This expects an Apache Tomcat container to install into.

This role should also handle a notification "restart tomcat9".

We recommend the following:

• Islandora-Devops.tomcat9
  • Github
  • Galaxy

In order for blazegraph to find its configuration files you have two options:

• Specify it in the blazegraph web.xml file:
  • This can be done automatically the role be specifying blazegraph_webxml_template: yes (default)
• Set the blazegraph options in your JAVA_OPTS environment variable. How to do this depends on the role. An example using Islandora-Devops.tomcat9 can be found here.

Example Playbook

There are two examples depending how the configuration infomration is passed to blazegraph:

• Using JAVA_OPTS
• Using web.xml

License

MIT