HIP:PMP:Database

PMP1 Scripts

The pmp1 has 2 main scripts that handle wind data. All pmp1 scripts are located in "/root/scripts/"

• The first script is "log.pl"

• • This script collects speed1, speed2, direction1, direction2 and box_temperature.
  • It then records them in files in "/root/logs/".
  • The script is run buy cron every 15 minutes and it also records a state value.
  • When the state value is 4, the script wakes up the network, resets the state value to 0, and executes the second main script.

• The second script is "dbi.pl"

• • This script simply sends all the data from the files in "/root/logs" to a database called "pmp1" on quark.

NOTE To prevent "log.pl" from disabling the network through cron, execute the script "/root/kill_jobs.sh" and don't forget to execute "/root/restore_jobs.sh" after you are done. Warning: The network will still get disabled whenever the "log.pl" runs. To avoid this, comment out all lines with:

 system("/root/scripts/net_disconnect.sh");

or

temporarily rename "/root/scripts/net_disconnect.sh"

Database on Quark

• To access the database, you have to log to quark and execute:

nerd@quark$ psql -U weather

or

nerd@quark$ psql -U hip

• The password is the "default" hip/weather.
• To view the wind data, execute:

weather=# select * from pmp1 order by id desc;

• This will list the wind data beginning with the latest entries.