Now, that you have set the RPi to send emails, lets do the next best thing. Setup fetchmail so that we can setup a cron job to run and get us the emails on Raspberry Pi. What can we do with these emails, lots 🙂 (I hope you already have a Raspberry Pi, if not then head over to element14.)
For now, first install fetchmail:
sudo apt-get install fetchmail
and if you are one of the guys who wants easy configuration then :
sudo apt-get install fetchmailconf
If you are using fetchmailconf, then just fire up “fetchmailconf”. You will get a GUI, where you can configure the setting. If not, then you can create a file “~/.fetchmailrc” which should look something like this:
user "" with password "" mda ""
# do not delete the mails on server.
# do not re-write the headers for the mail, get saner headers for the script to process.
# use ssl
Then you already have a working system for sending and receiving mail. Now, you can set the mda in the fetmailrc to a script which can do few things for you. The script below will get a page and mail it to you, if you have the subject as “get” and send “wake on LAN” to desired PC if you have subject as “wol”. Cool 🙂
SysUsage continuously monitor your systems informations and generate
All reports are shown throught a web interface.
SysUsage grabs all system activities using Sar and system commands allowing
you to keep tracks of your computer or server activity during his life.
It is a great help for performance analysis and resources management. The
threshold notification can alarm you when the system capabilities are
reached by sending SMTP messages or throught Nagios reports.
By default it will monitor all you need to know on your server activity, it
is written in Perl and should works on all Unix like plateforms. It doesn’t
require a Database system like MySQL or PostgreSQL but lie on rrdtool. In
addition you can embeded your own plugins written in any programing language.
Since release 5.0 SysUsage can be run from a centralized place where
collected statistics will be stored and where graphics will be rendered.
Unless other monitoring tools with lot of administration work, SysUsage is
design to have the lesspossible things to configure and a high level of admin
system knowledge. Each server can also be self monitored and you just have to
connect your browser to the web interface to know his health level.
SysUsage is design with simplicity in mind. I want all relevant statistics
from my servers within an intuitive web interface and without spending too
much time to configure it, if you know Nagios, you know what I mean. You will
especially like SysUsage for that.
And now for the installation:
sudo yum install sysusage sysusage-httpd
Once you have installed, you would need to enable the crontab to collect the data. And the sysusage-httpd is for the apache server configure to enable you to access http://localhost/sysusage
And you are done. It pretty good to see the overall system usage wrt to CPU, Disk and network.