Nagios is (in my opinion) one of the finest availability and monitoring solutions available. The stability, extendability and cost effectiveness (it is free under the GPL), are second to none (again, my opinion). That being said, it is far from being the easiest monitoring solution to implement. The build process itself, while not being overly complicated, can be vexing to new Linux users. That doesn't even include the configuration, which sometimes still makes me cringe.more...
The standard Perl distribution comes with a debugger, although it's really just another Perl program, perl5db.pl. Since it is just a program, I can use it as the basis for writing my own debuggers to suit my needs, or I can use the interface perl5db.pl provides to configure its actions. That's just the beginning, though. read more...
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