Introduction
This guide details the process for installing the system requirements of the Direct Certificate Discovery Tool (DCDT, or the Tool).
Hardware Requirements
| Hardware Type | Minimum Requirement | Notes |
| CPU | 1 Processing Unit @ 2.0GHz | Only a rough estimate. |
| Memory (RAM) | 3GB | Less memory is required if the pieces of software are run on different machines. |
Software Requirements
| Software Name | Minimum Version | Notes |
| Ubuntu (Server) | 12.04 LTS (Precise Pangolin) or
13.04 (Raring Ringtail) | |
| Oracle Java 7 JDK + JRE | 1.7.0 | Install instructions detailed below. |
| Mercurial CLI | 2.2.2 | Install instructions detailed below. |
| OpenSSL CLI | 1.0.0 | Install instructions detailed below. |
| Apache Ant | 1.7 | Install instructions detailed below. |
| Apache Maven | 3.0 | Install instructions detailed below. |
| Apache Tomcat | 7.0 | Install instructions detailed below. |
Install Software Requirements
System
Installing the software packages detailed below requires several common system-wide utilities. They can be installed by running:
sudo apt-get install wget
Java Development Kit (JDK) & Java Runtime Environment (JRE)
In order to get the proprietary Oracle Java 7 packages, a custom install script (provided by the OAB Java GitHub project) must be utilized. To create and install the packages, run the following:
wget https://raw.github.com/flexiondotorg/oab-java6/master/oab-java.sh -O ~/oab-java.sh
chmod +x ~/oab-java.sh
sudo ~/oab-java.sh -7
sudo apt-get install oracle-java7-jdk
sudo update-java-alternatives -s java-7-oracle
Note: when running the final command above, you might see some errors like the following:
update-alternatives: error: no alternatives for mozilla-javaplugin.so.
These errors can be safely ignored.
Mercurial CLI
Run the following:
sudo apt-get install mercurial
OpenSSL CLI
Run the following:
sudo apt-get install openssl
Apache Ant
Run the following:
sudo apt-get install ant
Apache Maven
Run the following:
sudo apt-get install maven
Apache Tomcat
Run the following:
sudo apt-get install tomcat7 tomcat7-admin