NAME
Nagios::Nrpe - Small framework for creating and using custom NAGIOS NRPE checks.
DESCRIPTION
The main objective of this module is to allow one to rapidly create and use new custom NAGIOS NRPE checks. This is done in two ways. Firstly, this module allows one to create new check scripts on the fly. Secondly, the module gives the user a number of necessary and/or commonly found features one might use in NRPE checks. Thus removing much of the repetitive boilerplate when creating new checks. Hopefully this is achieved in such a way as to avoid too many dependencies. Finally, this over-engineered bit of code was dreamt up out of a desire to have consistent ad hoc NAGIOS NRPE scripts. More effort to setup than value added? Well...
VERSION
version 0.002
SYNOPSIS
# Example check script for yum package updates.
use Nagios::Nrpe;
my $nrpe = Nagios::Nrpe->new( verbose => 0, log => 0, );
$nrpe->info('Starting yum update notify check.');
open ( my $fh, '-|', '/usr/bin/yum check-update' ) || $nrpe->error('yum failed');
my $yum_info = { verbose => do { local $/; <$fh> } };
close ( $fh );
$nrpe->info('YUM: ' . $yum_info);
my $exit_code = ( $? >> 8 );
$nrpe->debug("YUM exit code: $exit_code");
( $exit_code == 0 ) ? $nrpe->exit_ok('OK')
: ( $exit_code == 100 ) ? $nrpe->exit_warning('new updates available')
: $nrpe->exit_unknown('unknown status');OPTIONS
verbose
my $nrpe = Nagios::Nrpe->new( verbose => 1 );When enabled all info & debug messages will print to stdout. If log is also turned on, will log syslog. Disabled by default.
log
my $nrpe = Nagios::Nrpe->new( log => 1 );When enabled all info & debug messages will log to syslog. Disabled by default.
check_name
my $nrpe = Nagios::Nrpe->new( check_name => 'example' );Used for check script generation. See nagios_nrpe.pl
check_path
my $nrpe = Nagios::Nrpe->new( check_path => '/tmp' );Used for check script generation. See nagios_nrpe.pl
SUBROUTINES/METHODS
exit_ok
my $nrpe = Nagios::Nrpe->new();
$nrpe->exit_ok( 'Looks good', 'stat1=123;stat2=321;' );Usage: Pass human readable message and then (optionally) nagios stats. This call will exit the program with the desired exit code.
Returns: Exits with a nagios "ok" exit code.
exit_warning
my $nrpe = Nagios::Nrpe->new();
$nrpe->exit_ok( 'Looks interesting', 'stat1=123;stat2=321;' );Usage: Pass human readable message and then (optionally) nagios stats. This call will exit the program with the desired exit code.
Returns: Exits with a nagios "warning" exit code.
exit_critical
my $nrpe = Nagios::Nrpe->new();
$nrpe->exit_ok( 'oh god, oh god, we're all going to die', 'stat1=123;stat2=321;' );Usage: Pass human readable message and then (optionally) nagios stats. This call will exit the program with the desired exit code.
Returns: Exits with a nagios "critical" exit code.
exit_unknown
my $nrpe = Nagios::Nrpe->new();
$nrpe->exit_critical( 'I donno lol!' );Usage: Pass human readable message and then (optionally) nagios stats. This call will exit the program with the desired exit code.
Returns: Exits with a nagios "unknown" exit code.
_exit
INTERNAL USE ONLY.Usage: Creates a valid exit state for a NAGIOS NRPE check.
Returns: exits program. Do not pass go, do not collect $200.
_load_logger
INTERNAL USE ONLY.Usage: Inits the log4perl logger.
Returns: blessed ref
error
my $nrpe = Nagios::Nrpe->new();
$nrpe->error( 'Not working, oh noes!' );Usage: Error messaging. If verbose is on will print to stdout. If log is on will log to syslog. Please note, an error message call will cause the program to exit with a critical nagios exit code.
Returns: exits program.
info
my $nrpe = Nagios::Nrpe->new();
$nrpe->info( 'Insert info message here.' );Usage: Info messaging. If verbose is on will print to stdout. If log is on will log to syslog.
Returns: Nothing;
debug
my $nrpe = Nagios::Nrpe->new();
$nrpe->debug( 'Insert debug message here.' );Usage: Debug messaging. If verbose is on will print to stdout. If log is on will log to syslog.
Returns: Nothing;
generate_check
my $nrpe = Nagios::Nrpe->new( check_name => foo,
check_path => '/tmp',
verbose => 1,
);
my $check_path = $nrpe->generate_check;Usage: Generates a new NAGIOS NRPE check.
Returns: Path to newly created file.
_log_default
INTERNAL USE ONLY.Returns: log4perl config.
_log_verbose
INTERNAL USE ONLY.Returns: log4perl config.
_log_stdout
INTERNAL USE ONLY.Returns: log4perl config.
_log_disabled
INTERNAL USE ONLY.Returns: log4perl config.
_template
INTERNAL USE ONLY.Returns: perl script template for new nagios nrpe check.
BUGS AND LIMITATIONS
Report bugs & issues, please email the author.
AUTHOR
Sarah Fuller, <sarah at averna.id.au>
LICENSE AND COPYRIGHT
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
This software is copyright (c) 2012 by Sarah Fuller.