Probes is a web application based on Mojolicious (Perl Web Framework) that lets you graph timed data stored inside a PostgreSQL database.

It can generate scripts to collect the activity data on a PostgreSQL machine (SQL, sysstat), the tarball can then be uploaded to the web UI, to display the data as graphs.

The purpose of Probes is to have a set of predefined data gathering commands (e.g. probes) and graphs to quickly show the activity on the studied server.

The versions showed have been tested, it may work with older versions

• Perl 5.10
• Mojolicious 2.98
• PostgreSQL 9.0
• A CGI/Perl webserver

A PostgreSQL database with a non superuser with the ability to create new schemas is required. So, first create a database and a user, set things up to allow the connection from the webserver with this user to the db.

Then run sql/probes_init.sql script on the db to create tables and other stuff.

Install other prerequisites: Mojolicious is available on CPAN and sometimes packages, for example the package in Debian is libmojolicious-perl

Copy probes.conf-dist to probes.conf and edit it.

To quickly run the UI, do not activate rewrite in the config (this is Apache rewrite rules when run as a CGI) and start the morbo webserver inside the source directory:

morbo script/probes

It will output what is printed to STDOUT/STDOUT in the code in the term. The web pages are available on http://localhost:3000/

To run the UI with Apache, here is an example using CGI:

<VirtualHost *:80>
	ServerAdmin [email protected]
	ServerName probes.example.com
	DocumentRoot /var/www/probes/public/

	<Directory /var/www/probes/public/>
		AllowOverride None
		Order allow,deny
		allow from all
		IndexIgnore *

		RewriteEngine On
		RewriteBase /
		RewriteRule ^$ probes.cgi [L]
		RewriteCond %{REQUEST_FILENAME} !-f
		RewriteCond %{REQUEST_FILENAME} !-d
		RewriteRule ^(.*)$ probes.cgi/$1 [L]
	</Directory>

	ScriptAlias /probes.cgi /var/www/probe/script/probes
	<Directory /var/www/probes/script/>
		AddHandler cgi-script .cgi
		Options +ExecCGI
		AllowOverride None
		Order allow,deny
		allow from all
		SetEnv MOJO_MODE production
		SetEnv MOJO_MAX_MESSAGE_SIZE 4294967296
	</Directory>

	ErrorLog ${APACHE_LOG_DIR}/probes_error.log
	# Possible values include: debug, info, notice, warn, error, crit,
	# alert, emerg.
	LogLevel warn

	CustomLog ${APACHE_LOG_DIR}/probes_access.log combined
</VirtualHost>