Much thanks already!
The site I´m renting the servers from had a maintenance break and rebooted my node. After the reboot I received the usual email that the node is down, but this time it didn´t recover. Logged into the node and issued zend command, but i recieved the following error:
Error opening block database.
Please restart with -reindex to recover.
Rebooted node with sudo reboot command. Still same error.
added -reindex to reboot command, but it´s invalid.