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SMONITOR(1) User Contributed Perl Documentation SMONITOR(1)
NAME
smonitor - command-line tool for monitoring services
VERSION
version 0.2.8
SYNOPSIS
smonitor [-cfg <file>] [<output-options>] [<log-options>] [<other-options>]
where <output-options> are: -outfile <file>
-onlyerr
-format human | tsv | html
-cssurl <url>
where <log-options> are: -logfile <file>
-loglevel debug | info | warn | error | fatal
-debug
-logformat <template>
where <other-options> are: -npp <integer>
-service[s] <service-name> [<service-name>...]
-nonotif
smonitor -showcfg
smonitor -lf
smonitor -h
smonitor -help
smonitor -man
smonitor -version
DESCRIPTION
smonitor is a command-line tool for monitoring (checking) various
services and other parts of your IT infrastructure. In order to run it,
you need to have a configuration file that defines what services to
check and how to do the checking. Details how to create such
configuration file are in the documentation of the Perl module
Monitor::Simple; just type:
perldoc Monitor::Simple
OPTIONS
The command-line arguments and options can be specified with single or
double dash. Most of them can be abbreviated to the nearest unbiased
length. They are case-sensitive.
-cfg <config-file>
It specifies what configuration file to use (read: what services to
check). By default, it uses file monitor-simple-cfg.xml.
-service <service-name> [<service-name>...]
By default, smonitor checks all services specified in the configuration
file. This parameter can select only some services. For example:
smonitor -cfg my.cfg -service synonia mrs
-outfile <file>
It specifies a file where the report about checking is written to. By
default, it is written to standard output (but see also possible
combinations with "-onlyerr" option).
A note about notifications: This parameter "-outfile" has nothing to do
with notifications. The notifications are messages about the status of
individual services and they are defined (if at all) in the
configuration file (where it is also specified where to send them and
how to format them). You cannot influence notifications by any
parameter of the smonitor. Well, it is not entirely true: You can use
parameter "-nonotif" to disable all notifications.
-onlyerr
This option influences what will be reported on the standard output
(STDOUT). The overall behaviour depends on the combination of
"-outfile" and "-onlyerr" parameters:
-outfile <file> -onlyerr what will be done
-----------------------------------------------------
yes no all output to <file>
yes yes all output to <file>
+ errors also on STDOUT
no no all output to STDOUT
no yes only errors to STDOUT
The variety of output destinations allows to run smonitor as a "cron"
job (a scheduled job) and to decide when the scheduling system reports
the results. Just remember that these reports, sent by the scheduling
system, are not the same as notifications defined in the configuration
file - these two ways how to report status of services are independent
and both can be used in the same time.
-format human | tsv | html
How the report will be formatted. Default is "human":
DATE SERVICE STATUS MESSAGE
Tue Sep 27 10:40:15 2011 Memory Check 2 Memory CRITICAL - 91.7% (1601124 kB) used
Tue Sep 27 10:40:15 2011 Current timestamp 0 Tue Sep 27 10:40:15 2011
Tue Sep 27 10:40:15 2011 Born To Be Killed 2 Plugin 'Monitor/Simple/plugins/born-to-be-killed.pl' died with signal 9
Tue Sep 27 10:40:15 2011 Synonia Bad Params 2 500 Can't connect to Xdb.cbrc.kaust.edu.sa:80...
The "tsv" is a TAB-separated output, without any header line. The
"html" format creates a simple HTML page with the report.
-cssurl <url>
This is used only when "-format html" is used. It specifies a URL of a
CSS-stylesheet that can change the look-and-feel of the HTML report
page. See the source of the page for the CSS-classes names.
-npp <integer>
A not much used parameter, rather a technical one: it specifies maximum
number of parallel checks. Because each check is done by a new process,
the "npp" parameter actually stands for "Number of Parallel Processes".
Default is 10.
-nonotif
This options disables executing all notifications (as they are defined
in the configuration file). It is, for example, useful when you are
testing a new configuration file and you do not wish to send emails,
etc. about it
Logging options
Additional to the report about the status of services (parameters
"-outfile" and "-onlyerr") and to the notifications (defined in the
configuration file) there is also a logging mechanism that helps to
trace how the checking is done in more details. The logging is defined
by few logging parameters - they all have reasonable default values.
-logfile <logfile>
Where to put log records. By default, it appends records to the
file smonitor.log (which is created if it does not exist yet). You
can also specify "STDOUT" as the logfile:
-logfile STDOUT
-loglevel debug | info | warn | error | fatal
Each log record has its level of importance (five possible levels:
from "debug" to "fatal"). This parameter tells which log records
(read: records of what importance) will be created. A level means
also all levels "below" it. For example, level "warn" includes
"warn", "error" and "fatal" messages. Default level is "info".
-debug
It is the same as "-loglevel debug".
-logformat <string>
It specifies how to format log records. Default format is
"%d (%r) %p %m%n>" when the log records look like this:
2011/09/27 12:18:50 (97) INFO> --- Checking started ---
2011/09/27 12:18:50 (100) DEBUG> Started: Monitor/Simple/plugins/check_mem.pl -u -w 55 -c 80
2011/09/27 12:18:50 (100) DEBUG> Started: Monitor/Simple/plugins/check-url.pl -cfg configs/simple-example-cfg.xml -service pubmed -logfile a.log -loglevel debug
2011/09/27 12:18:50 (30) DEBUG> Invoking HTTP HEAD: http://www.ncbi.nlm.nih.gov/pubmed/
2011/09/27 12:18:51 (760) INFO> Done: pubmed 0 OK
2011/09/27 12:18:51 (971) INFO> --- Checking finished [0.872014999389648 s] ---
The columns in this examples are: date (%d), number of milliseconds
from the moment smonitor was started (%r), log level (%p) and log
message (%m). More details about formats are in the Perl module
Log::Log4perl.
-showcfg
It prints the name of the used configuration file and its content and
it exits. It is rather for debugging.
-lf
It prints the currently available formats (the values recognizable by
the "-format" parameter) and exits:
$> smonitor -lf
html Formatted as an HTML document
human Easier readable by humans
tsv TAB-separated (good for machines)
General options
-h Print a brief usage message and exits.
-help
Print a brief usage message with options and exits.
-man
Print a full usage message and exits.
-version
Print the version and exits.
AUTHOR
Martin Senger <martin.senger@gmail.com>
COPYRIGHT AND LICENSE
This software is copyright (c) 2013 by Martin Senger, CBRC-KAUST
(Computational Biology Research Center - King Abdullah University of
Science and Technology) All Rights Reserved.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
perl v5.20.2 2013-06-08 SMONITOR(1)