I run GLPI and OCS Inventory NG server on a VM using the web port 7877. In another VM with Ubuntu, I installed OCS Inventory agent using the web port 5566. This is supposed to synchronize and send information about the machine to server but when I ran ocsinventory-agent, even as root, I get a message like this:
[error] Cannot establish communication : 500 Can't connect to 127.0.0.1:7877 (Connection refused)
then I googled this issue and it was talking about SQL problems. Until now it is still unsolved.