A central Solr server is needed to store keyword indexes. Zookeeper is used to manage Solr configuration and as a coordination service for Autopsy. It is installed as part of Bitnami Solr package, but has to be configured separately. To install Solr, perform the following steps:

Prerequisites

You will need:

64-bit version of the Java Runtime Environment (JRE) from http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html.
Download the Apache Solr 4.10.3-0 installation package from https://sourceforge.net/projects/autopsy/files/CollaborativeServices/Solr or Direct Download Link
Access to an installed version of Autopsy so that you can copy files from it.
A network-accessible machine to install Solr upon. Note that the Solr process will need to write data out to the main shared storage drive, and needs adequate permissions to write to this location, which may be across a network.

Installation

JRE Installation

Install the Java JRE if needed. You can test this by running where java from the command line. If you see output like the yellow results below, you have a JRE.

If you need the JRE, install it with the default settings.
Create a Windows environment variable for your JavaHome with the path to your 64-bit version of the JRE. If you do not know the path, the correct JavaHome path can be obtained by running the command where java from the Windows command line. An example is shown below. Do not include the "bin" folder in the path you place into the JavaHome variable. A correct example of the final result will look something like this: JavaHome="C:\Program Files\Java\jre1.8.0_111"

Note that if you get something like the following when running the "where java" command, it is a symbolic link to the Java installation and you need to trace it to the proper folder as explained below.

To trace a symbolic link to the proper folder, use Windows Explorer to navigate to the path shown (C:\ProgramData\Oracle\Java\javapath for the example above), then right click on java.exe and Click on Properties. You will see the path you should use in the Location field, shown in the screenshot below. Do not include the "bin" folder in the path you place into the JavaHome variable.

Solr Installation

The following steps will configure Solr to run using an account that will have access to the network storage.

Run the Bitnami installer, "bitnami-solr-4.10.3-0-windows-installer.exe"
If Windows prompts with User Account Control, click Yes
Follow the prompts through to completion. You do not need to "Learn more about Bitnami cloud hosting" so you can clear the check box.
If you see an error dialog like the following, you may safely ignore it.
When the installation completes, clear the "Launch Bitnami Apache Solr Stack Now?" checkbox and click Finish.

Solr Configuration

Stop the solrJetty service by pressing Start, typing services.msc, pressing Enter, and locating the solrJetty Windows service. Select the service and press Stop the service. If the service is already stopped and there is no Stop the service available, this is okay.
Edit the "C:\Bitnami\solr-4.10.3-0\apache-solr\scripts\serviceinstall.bat" script. You need administrator permission to change this file. The easiest way around this is to save a copy on the Desktop, edit the Desktop version, and copy the new one back over the top of the old. Windows will ask for permission to overwrite the old file; allow it. You should make the following changes to this file:
- Add the following options in the line that begins with "C:\Bitnami\solr-4.10.3-0/apache-solr\scripts\prunsrv.exe" :
  - ++JvmOptions=-Dcollection.configName=AutopsyConfig
  - ++JvmOptions=-Dbootstrap_confdir="C:\Bitnami\solr-4.10.3-0\apache-solr\solr\configsets\AutopsyConfig\conf"
  - ++JvmOptions=-DzkRun
- Replace the path to JavaHome with the path to your 64-bit version of the JRE. If you do not know the path, the correct JavaHome path can be obtained by running the command "where java" from the Windows command line. An example is shown below. The text in yellow is what we are interested in. Do not include the "bin" folder in the path you place into the JavaHome variable. A correct example of the final result will look something like this: –-JavaHome="C:\Program Files\Java\jre1.8.0_111"
  
  A portion of an updated serviceinstall.bat is shown below, with the changes marked in yellow.
Edit "C:\Bitnami\solr-4.10.3-0\apache-solr\solr\solr.xml" to set the transientCacheSize to the maximum number of cases expected to be open concurrently. If you expect ten concurrent cases, the text to add is <int name="transientCacheSize">10</int>

The added part is highlighted in yellow below. Ensure that it is inside the <solr> tag as follows:
Edit "C:\Bitnami\solr-4.10.3-0\apache-solr\resources/log4j.properties" to configure Solr log settings:
- Increase the log rotation size threshold (log4j.appender.file.MaxFileSize) from 4MB to 100MB.
- Remove the CONSOLE appender from the log4j.rootLogger line.
  
  The log file should end up looking like this (modified lines are highlighted in yellow
From an Autopsy installation, copy the folder "C:\Program Files\Autopsy-XXX(current version)\autopsy\solr\solr\configsets" to "C:\Bitnami\solr-4.10.3-0\apache-solr\solr".
From an Autopsy installation, copy the folder "C:\Program Files\Autopsy-XXX(current version)\autopsy\solr\solr\lib" to "C:\Bitnami\solr-4.10.3-0\apache-solr\solr".

Zookeeper Configuration

The following steps will configure Zookeeper.

Stop the solrJetty service by pressing Start, typing services.msc, pressing Enter, and locating the solrJetty Windows service. Select the service and press Stop the service. If the service is already stopped and there is no Stop the service available, this is okay.
Start a Windows command prompt as administrator by pressing Start, typing command, right clicking on Command Prompt, and clicking on Run as administrator. Then run the following command to uninstall the solrJetty service:
```
      cmd /c C:\Bitnami\solr-4.10.3-0\apache-solr\scripts\serviceinstall.bat UNINSTALL
```
You will very likely see a result that says "The solrJetty service is not started." This is okay.
Create a folder "C:\Bitnami\zookeeper" if it does not exist.
Edit "C:\Bitnami\solr-4.10.3-0\apache-solr\solr\zoo.cfg" to include the text dataDir=C:/Bitnami/zookeeper as shown in the screenshot below
Start a Windows command prompt as administrator by pressing Start, typing command, right clicking on Command Prompt, and clicking on Run as administrator. Then run the following command to install the solrJetty service:
```
       cmd /c C:\Bitnami\solr-4.10.3-0\apache-solr\scripts\serviceinstall.bat INSTALL
```
Note the argument "INSTALL" is case sensitive. Your command prompt should look like the screenshot below. Very likely your command prompt will say "The solrJetty service could not be started." This is okay.

Start Solr

You should be able to see the Solr service in a web browser via the URL http://localhost:8983/solr/#/ as shown in the screenshot below. If you can, you should skip the next step. If you cannot, proceed to the next step.
Press Start, type services.msc, and press Enter. Find solrJetty. If the service is running, press Stop the service, then double click it, and switch to the Log On tab to change the logon credentials to a user who will have access to read and write the primary shared drive. Note that selecting "Local System account" will work only if Solr service and case output folders are on the same machine. Using "Local System account" to run Solr service and having case output folders on a different machine will result in Solr being unable to create index files.
If the machine is on a domain, the Account Name will be in the form of DOMAINNAME\username as shown in the example below. Note that in the screenshot below, the domain name is DOMAIN and the user name is username. These are just examples, not real values.

If the machine is on a domain, make sure to select the domain with the mouse by going to the Log On tab, clicking Browse, then clicking Locations and selecting the domain of interest. Then enter the user name desired and press Check Names. When that completes, press OK, type in the password once for each box and press OK. You may see "The user has been granted the log on as a service right."
You should be able to see the Solr service in a web browser via the URL http://localhost:8983/solr/#/ as shown in the screenshot below.

If the service is appropriately started and you are unable to see the screenshot above, contact your network administrator to open ports in the firewall.

Warning: The Solr process must have adequate permissions to write data to the main shared storage drive where case output will be stored.