Epoptes consists of a server package called
epoptes and a client package called
epoptes-client. Install the server part on the PC where you’ll be monitoring the clients from. If you want to use the GUI from a thin-client, install it on the LTSP server.
Execute the following command as root (use
sudo -i first on Ubuntu or
su - on Debian):
apt-get install --install-recommends epoptes
After the installation you need to add some users to the “epoptes” group (or use another group as mentioned in the Configuration section below). These users will be allowed to launch the GUI and control clients:
gpasswd -a username epoptes
Users that are currently logged on need to logoff/logon for the group change to take effect (or use
Before installing the epoptes-client package, it’s necessary to tell the clients how to contact the epoptes server PC. There are three different ways to do that:
- By default, epoptes-client tries to connect to the epoptes server with the DNS name “server”. So if you have a DNS server (most people don’t run their own DNS server though), put a corresponding entry there.
- If you don’t have a DNS server and your epoptes server has a static IP (many people don’t use static IPs though), you can put a line like
220.127.116.11 serverto /etc/hosts in all clients, replacing 18.104.22.168 with the server’s static IP.
- If your epoptes server doesn’t have a static IP, then it might be possible to use its avahi (multicast DNS) hostname that is automatically provided in most recent distributions. For example, if your server hostname is “myserver”, try this command in one of your clients:
ping myserver.local. If this command works, then your multicast DNS is working properly, and you tell your clients where to find the epoptes server by putting
SERVER=myserver.localin /etc/default/epoptes-client in all of them.
If needed, this launchpad question provides more details on the aforementioned methods.
After you’ve configured where the clients will find the epoptes server, execute these commands as root in them:
apt-get install --install-recommends epoptes-client epoptes-client -c # Fetches the OpenSSL certificate from the server
Note that packages are not allowed to start programs inside a user’s session, so you need to reboot the clients for the epoptes-client installation to take effect.
For LTSP chroots, execute the following commands:
ltsp-chroot apt-get install --install-recommends epoptes-client epoptes-client -c # Fetches the OpenSSL certificate from the server exit
If you’re using NBD (all Ubuntu versions and Debian >=8), you also need to update the NBD image for the changes to take effect: