Technical notes about ARION project
Contents
Introduction
Idrophones
Preamplifier
a
a1
b
c
Acquisition subsystem
Hydrophones raw data collector
Surface analyzer
Data transmission large band wifi link
Data transmission event notifier
Ground station
DIFI server
The DIFI server has address 192.168.253.87 on the internal department network.
It's services are remotely accessible, through port forwarding, from 130.251.168.253 by ports:
| Ext.port | Int.Port | Service |
| 4080 | 80 | apache |
| 4081 | 5901 | vnc |
| 4082 | 22 | ssh |
| 4083 | 443 | https |
| 4084 | 1194 | openvpn |
| 4085 | 5901 | vnc |
| 4086 | 3306 | mysql |
| 4087 | 873 | rsync |
| 4088 | 8888 | proxy |
| 4089 | 8080 | calibre |
Tasks of the DIFI server
- get analysis data from the remote server
- get slow control data from the remote server
- transfer analysis data to the storage unit
- transfer slow control data to the storage unit
- transfer data to DIFI web server
Timing
Every action is done through crontab configuration
*/5 * * * * /home/arion/arion-update-analysis 25 14 * * * /home/arion/arion-update-slowcontrol
to look at the runnning configuration, from arion user:
crontab -l
to edit/update it:
crontab -e
