[TC_17] NebulOuS agent recovers after failure with communication with NebulOuS core

[Christos-Alexandros Sarros]

Objective:
NebulOuS agent tries to recover from failure in communications with NebulOuS core and provides sufficient logs to identify the root of the problem.

Preconditions:
1. NebulOuS agent is installed on a manually-managed node and running correctly.
2. User is logged in the machine and has appropriate rights for accessing NebulOuS agent logs.
3. “Dummy APP” is registered in NebulOuS and an instance is running on the node.

Steps:

Step 1.
- Action: NebulOuS agent can no longer contact NebulOuS core due some network issues (e.g: LAN cable disconnected, NebulOuS core goes down, etc…).

- Expected results: User can see relevant logs. NebulOuS agent actively tries to resume normal operation. Application running on the node is terminated.

Step 2.
- Action: Link with NebulOuS core is recovered.

- Expected results: NebulOuS agent resumes normal operation briefly. User can see relevant logs.