# Windows

1. Download the KA Lite Windows installer.
2. Double-click the downloaded .exe file, and the wizard window will appear to guide you through the process of installing KA Lite on your server.

## Upgrade

Upgrading KA Lite in Windows over an existing installation is easy – just run the installer and follow the prompts! You don’t need to uninstall your old KA Lite installation first. You can follow the prompts to either keep your existing data or delete old data and start over. See the release notes for critical upgrade information for specific versions.

# Mac OS X

Warning

The latest OS X version (EL Capitan) is not yet supported.

## Installation

1. Download the KA Lite OSX installer.
2. After the download is complete, double click the .dmg file.
3. Click the `Agree` button to accept the LICENSE agreement.
4. On the .dmg window, drag the `KA-Lite Monitor` app into the `Applications` folder.
5. Launch `KA-Lite Monitor` from your `Applications` folder.
6. On first load, it will check your current environment and show the Preferences dialog.
7. Input your preferred administrator username and password, then click the `Apply` button in `KA-Lite Preferences` dialog.
8. You will be prompted that initial setup will take a few minutes, click the `OK` button and wait for the notification that KA-Lite has been setup and can now be started.
9. Click on the KA-Lite logo icon on the menu bar and select the `Start KA-Lite` menu option.
10. Wait for the notification that you can now click on `Open in Browser` menu option.
11. Click on the KA-Lite logo icon on the menu bar and select `Open in Browser` menu option - this should launch KA-Lite in your preferred web browser.
12. Login using the administrator account you have specified during setup.

## Upgrade

To upgrade an existing KA Lite installation.

1. Download the KA Lite OSX installer.
2. After the download is complete, double click the .dmg file.
3. Click the `Agree` button to accept the LICENSE agreement.
4. On the .dmg window, drag the `KA-Lite Monitor` app into the `Applications` folder.
5. Give confirmation to overwrite the existing app.
6. Launch `KA-Lite Monitor` from your `Applications` folder.

Tip

If the sidebar shows entries that are greyed-out, the child items of the entry may be videos that were not yet downloaded. If there are assessment items inside, then you need to extract the assessment.zip manually:

1. Launch `KA-Lite Monitor` from your `Applications` folder.
2. Click on the app icon at the menu bar.
3. Click on `Preferences` in the menu option.
4. Go to `Advanced` tab, click on the `Extract Assessment` button, then confirm the action.
5. Restart the server, login to the web app, then check the sidebar contents.

This will enable the greyed-out assessment items on the sidebar.

See the release notes for critical upgrade information for specific versions.

# Linux

## Main method: Ubuntu/Debian .deb

Download the latest .deb manually from our server. After that, you can install the .deb file like this:

    sudo dpkg -i FILENAME.deb

Warning

Double-clicking the .deb in Ubuntu will open it in Ubuntu Software Center. This will fail on a default installation due to a bug in Ubuntu. To make it work, you need to install `libgtk2-perl`, for instance by running `sudo apt-get install libgtk2-perl`. After that, make sure Software Center is closed and double-click the .deb file.

`FILENAME` should be replaced with the name of the file you downloaded. The file may be named as if it was intended for Ubuntu but works just as well for any other Debian-based systems like Debian, Raspberry Pi, Linux Mint etc.

You will be prompted to enter some configuration information. You should read the on-screen instructions carefully, but some explanation is included here:

1. You will be asked to choose to run KA Lite on boot or not. We recommend choosing yes, as it simplifies data management. If you choose no, you must manually start KA lite every time. Note that running KA Lite as different users creates different sets of data files, so it’s recommended that you run KA Lite as the same user every time.

2. If you chose to start on boot in the previous step, you will be prompted to choose the owner for the KA Lite server process. Generally the default value is ok.

3. You will be asked to review your choices, and finally KA Lite will start automatically when installation is complete.

Tip

If you want to receive automatic updates from online sources, you can also use Debian/Ubuntu: Subscribe to updates through a PPA.

## Raspberry Pi

For a Raspberry Pi running a Debian system, you can install the special Debian package `ka-lite-raspberry-pi`.

It can be installed by downloading the latest .deb on the Pi and installing it:

    # Install dependencies
    sudo apt-get install python-m2crypto python-pkg-resources nginx python-psutil
    # Fetch the latest .deb
    sudo wget https://learningequality.org/r/deb-pi-installer-0-15 --no-check-certificate --content-disposition
    # Install the .deb
    sudo dpkg -i ka-lite-raspberry-pi*.deb

You can also add the PPA, see Debian/Ubuntu: Subscribe to updates through a PPA, and then run `sudo apt-get install ka-lite-raspberry-pi`.

After installing, you can setup a Wifi hotspot using this guide: Raspberry Pi Wi-Fi

## Other options

KA Lite is available for all platforms (e.g. non-Debian compatible platforms) through PyPi. See Generic installation (pip install).

## Upgrade

To upgrade KA Lite on Linux, simply download the latest deb file and follow the instructions above for installation. Your existing data will be preserved by default. See the release notes for critical upgrade information for specific versions.

## Configuration after installation or update

Every time you install or update KA Lite, you must run `kalite manage setup` command again to setup the database and download assessment items (video descriptions, exercises etc.).

# Uninstalling

## Windows

1. Uninstall KA Lite from the Control Panel.
2. In Windows XP, double-click the “Add or Remove Programs” icon, then choose KA Lite.
3. In later version of Windows, click the “Programs and Features” icon, then choose KA Lite.

## Mac OSX

1. Launch `KA-Lite Monitor` from your `Applications` folder.
2. Click on the app icon at the menu bar.
3. Click on `Preferences` in the menu option.
4. Click the `Reset App` from the `Advanced` tab.
5. You will be prompted that “This will reset app. Are you sure?”, just click on `OK` button.
6. Another dialog will appear asking your `Password`, type your password then click on `Ok` button.
7. Quit the `KA-Lite Monitor` app (do not click the `Apply` button!).
8. Move the `KA-Lite Monitor` app to `Trash`.

## Linux: Debian/Ubuntu

Option 1: Open up Ubuntu Software Center and locate the KA Lite package. Press `Remove`.

Option 2: Use `apt-get remove <name of package>`. You have to know which package you installed, typically this is `ka-lite` or `ka-lite-bundle`.

## Installed with pip

You can remove KA Lite (when installed from pip or source distribution) with `pip uninstall ka-lite` or `pip uninstall ka-lite-static` (static version).

## Removing user data

Some data (like videos and language packs) are downloaded into a location that depends on the user running the KA Lite server. Removing that directory can potentially reclaim lots of hard drive space.

On Windows, the HOME and USERPROFILE registry values will be used if set, otherwise the combination `%HOMEDRIVE%%HOMEPATH%` will be used. You can check these values from the command prompt using the commands `echo %HOME%`, `echo $USERPROFILE%`, etc. Within that directory, the data is stored in the `.kalite` subdirectory. On most versions of Windows, this is `C:\Users\YourUsername\.kalite\`.

On Linux, OSX, and other Unix-like systems, downloaded videos and database files are in `~/.kalite`.