| | 399 | Acting beyond the gateway level, the Self-healing service is able to compensate the lack of sensors in one island, with sensors in another island. |
| | 400 | |
| | 401 | For this demo, we are using two islands, each with two nodes capable of measuring temperature. At the start, the temperature service on the two nodes in island1 (the Dresden island) is switched off and the temperature service on island2's nodes (the Bucharest island) is switched on. |
| | 402 | |
| | 403 | Running the test client shows that, without the help of the self-healing, the sensor readings lack inputs as nodes start failing. |
| | 404 | |
| | 405 | [[Image(sh-.png, center, 600px)]] |
| | 406 | |
| | 407 | Starting the Self-healing service changes this situation. Once a node fails, the service is able to start a node in either island. In the next screenshot, you may see how turning off the service on node 0001 in island2 makes the Self-healing service turn on node 0002 in island1: |
| | 408 | |
| | 409 | [[Image(sh-.png, center, 600px)]] |
| | 410 | |
| | 411 | Please note that not even a single sensor reading in the test client suffered of lack of sensors. In the next section, we detail a bit the timings. |
| | 412 | |
