The good old tarballs:
Current stable version flackem-check_multi-0.23-SHA1.tar.gz or
Latest development version (HEAD) flackem-check_multi-SHA1.tar.gz

Get your local git repository clone with:

git clone git://github.com/flackem/check_multi.git check_multi-HEAD

View the sources:
Stable version 0.23
Latest development (HEAD)

• nested macros allowed: 'normal' macros within objects.cache macros
• change in child timeout handling: full time range is used for child checks now
• macro substitution is case insensitive now (thx to Morbid Angel)
• fixed empty plugin output in checkresults files (thx to Joerg Krueger)
• added livestatus host expansion: livestatus [ tag ] = host.*
• fix for checking of warning and critical perfdata fields, thx to makana
• objects.cache macros added: $type:field:key:value$ is substituted by objects.cache value
• restructured error messaging: messages are assigned to child checks whereever applicable
• now accepting perfdata with trailing semicolons (like in PNP)
• report mode 32768 now suppresses all OK states in ASCII mode, thx to Joel Brooks
• added old XML structure input mode for upgrade issues, thx to Joerg Krueger
• passive feeded service definitions can be created automatically now
• added check for invalid name characters (allowed are A-Za-z0-9_-)

0.23 20.06.2010

• fixed statusdat for hosts and added numerous test cases
• version control system migrated to GIT (github)

0.22 19.06.2010

• fix for correct treatment of empty lines in encoded configurations, thx to Frank Plab
• state evaluation for child checks now works as global state evaluation
  - with complete expression, e.g. '$child$=~/expr/'
• statusdat [ test ] = /host.*/ - now supports also including host checks
• splitted checkresults report sub to prepare host checkresult files

0.21 03.06.2010

• second version of livestatus [ tag ] = Filter: field ~ pattern (needs Monitoring::Livestatus)
• added first version of livestatus [ tag ] = host:service (needs Monitoring::Livestatus)
• fixes for eval[ tag::plugin ]. thx again, Henry
• child checks are assigned to own process group (thx to Henry Rolofs)
• timeout routine now also kills child checks with positive numbers (thanks to Henry Rolofs)
• added new report mode which hides OK states / only shows problem states (thx to Timo Kempkens)
• added ok/warning/critical/unknown state rules for particular child checks: check_multi goes check_generic
• added fatal exit for two conditions: fork error and tmpfile error
• added encode option for providing complete config files via command line, thx to Michael Kraus and Gerhard Lausser
• added plugin_path variable, it allows to separate different plugins from libexecdir
• restructured pnp variables, pnp_cgi is replaced by pnp_url and pnp_version
• pnp popup errors fixed, thanks to Joerg Linge, Sebastian Waitz and Rene Rosenberger
• added new variable child_interval to provide time interval between child checks (default: 0.0 seconds)
• fixed status output for '-r 64': OK is only displayed, if plugin output does not contain OK itself, thanks to Jens Person
• added extended_perfdata, with particular state counters and overall states, thanks to Gerd von Egidy and Joerg Linge
• added support for icinga, 'configure –with-nagios_name=icinga'
• command file can now be feeded via STDIN, thanks to Joerg Krueger for this idea
• added 'snmp [ TAG ] = HOST:OID' (snmpget)
• added variable mouseover_type to cover PNP 0.6 and 0.4 differences, default is PNP 0.6
• first version of new 'cumulate' function, which aggregates data a la 'top'
• fixed handling of non-existing signals, and non-existing RCs

0.20 16.10.2009

• invisible checks (eval) will not be counted any more, since this confused some people :)
• added output [ TAG ] statement, it provides customizeable output everywhere, no more X plugins checked, Y plugins OK…
• rewritten parsing code - now trailing backslashes are not necessary any more
• replaced pnp_path by pnp_cgi with full path to PNP graph.php (PNP 0.6 coming soon)
• '-' as tag-char was broken, thx Hendrik
• added showcase / sample-config feed_passive to demonstrate feeding features
• added -s suppress_service=<service1>,<service2> to exclude services from report_send_nsca and report_checkresults_file
• added STDIN mode: check_multi now can report XML output feeded via STDIN
• hopefully userfriendly report mode specification: -r 1+4+8 is the same like -r 13
• new report mode 'report_checkresults_file' added for direct injection of child checks as passive service check results
• added caching for 'service [ tag ]'
• added send_nsca report option 4096, it sends child results to NSCA master
• added COUNT(ALL) to provide cluster rules like this one
  state [ CRITICAL ] = COUNT(CRITICAL) < COUNT(ALL)-1
• added 'service [ tag ] = host:service' to read service states from status.dat
• again some fixes for configure
• option action_mouseover now allows PNP popups in extinfo, thx to Amit Mor
• added example section in documentation - find these examples in sample-config
• at last: first configure version (including lots of cleanup and directory moving)
• added PERFDATA_<tag> environment var: perfdata for child checks, thx Bjoern Becker
• underscore is now allowed tag character
• added pnp_path (as replacement for action_url) and image_path, thx Amit Mor
• fixed html output for status_in_extinfo mode: <br /> instead of \n, thx Sascha
• added query_examples.html with sample queries
• status_query.cgi now with multiple combined queries
• nagios_status.cgi renamed to status_query.cgi
• added nagios_status.cgi to contrib directory, queries for all and everything ;)
• added option to provide multi output also in status cgi view, thx Sascha
• added LWP for reading config file remotely (http://hostname/path/to/configfile)
• added FindBin and changed default libexec path to $FindBin::Bin, thx. Wolfgang
• basename(plugin) - removed /path/from/<pluginname> for proper perfdata, thx. Gerhard

0.19 11.02.2009

• illegal_chars removal also for input (command lines)
• added fork for execution of child checks (allows better timeout handling)
• fixed main loop error handling (prevent repetition)
• better timeout handling: kill process group leader instead of die avoids hang of program
• removed newline cleanup for output
• replaced old contrib notification template with new notify_service_html
• fixed plugin counting (now reflects parent plugin)
• fixed eeval treatment of invalid RCs (like command)
• first preparation for data persistence
• check_multi environment vars begin now all with MULTI_
• data structure update: all settings now in $opt{set}
• data structure update: parent data now in $cmds{0}
• fixed initial RC (thx Henry)
• minor fix in HTML verbose output
• removed CR from wintel output and stderr (thx Sascha)
• add report option DETAIL_SERVICE_DEFINITION for multi_feed_passive
• set xml_elements=<list> allows customization of XML output
• removed '# comments within lines
• orphaned parameters check for command line
• proper error handling for creation of tmp directory
• fixed treatment of macros (-s-option): upper case → case sensitive
• at last: EPN capability (without 'use strict')
• first steps to flexible output definition
• added tmp_dir for temporary files
• added URL to usage for documentation
• commands extensible during runtime → call parse_lines within eeval
• fixed missing escaping for '#'
• improved verbose mode also for HTML output

0.18 07.08.2008

• improved verbose mode for ASCII output
• removed suppress_perfdata for check_multi perfdata, PNP needs this
• ok, convinced removed forced drop_privileges, warning message is sufficient
• moved drop_privileges before parameter evaluation: needs compile time UID now
• drop_privileges if ran as root, default: run as user nagios
• old exec with tempfiles is standard until new exec is validated (exec_open3:0)
• redesign of exec_command: open3 from IPC module does the trick now
• more indentation for HTML view - indent_label var created
• fixed handling of splitted multiline performance data (thx to Lorenz Bucher)
• added '#' comments functionality within lines (not complete comment lines)
• macro handling: non found $MACRO$ will be replaced by ''
• fixed substitute_macros
• minor fixes for notes_url links: alternation of link and icon, column spanning
• added tag_notes_link to implement notes_url as link behind tag in extinfo
• added notes_url for child checks and MULTI_TAG var
• fixed perfdata parser (thx Gerhard)
• added signal handler to catch terminating signals (cleanup,report)
• macro_substitution now also in tags (thx Willi)
• added error message if no plugin defined at all
• fixed plugin state for command file not found to UNKNOWN (thx Rudolf)

0.17 16.04.2008

• added recursive call detection
• collapse option to hide OK output in HTML view
• error messages in plugin output instead of long plugin output
• indentation of recursive checks in ASCII mode
• perl module version check for Getopt::Long
• added control variable for use of HTML::Entities
• restrict tag characters to A-Za-z0-9_:
• add libexec path to PATH var during check_multi runtime
• fixed regex in perfdata check routine (thx denschi)
• fixed CSS tags for HTML output (thx TheCry)
• print command runtime 0 if command is not executed due to timeout
• last rc from eval will also be mentioned for state evaluation
• added -x / execute option to provide commandline also for commands
• added file_extension setting to specify config file extension
• fixed perfdata label sanitizing (thx Jens)
• added explicit perfdata plugin specification (thx to Joerg Linge)
• fixed state substitution (now only for state statements)
• fixed check_multi performance data labels
• added ASCII output into HTML comments for notification scripts
• splitted eval into eeval (echo eval) and eval

0.16 19.01.2008

• multi label fix backported into stable 0.16
• minor cleanups
• enhanced performance string error parsing
• performance labels delimiters '::' → '_'
• minor fixes(eval error output, HTML::Entities use in eval…)
• added $STATE_<tag>$ vars
• fixed ::multi_label:: problems with ::tags
• new option -s suppress_perfdata=<tag1>,[<tag2>][,…]
• discarding incorrect perfdata (in order to save the other)
• fixed HTML::entities (thx to Gerhard Lausser)
• added set option: –set ENV_VAR=xyz
• added continuation lines capability for config files
• some minor debugging changes
• added eval [ TAG ] = PERLEXPR
• ePN support removed again (too many error conditions)
• fixed HTML issues (table specific, thx to Wolfgang Barth)
• ePN support
• removed –state option (replaced by state evaluation)
• replaced -r 64 (command list) and -r 1024 (state eval) by verbose option
• added –verbose (level 0-3) option and DEBUG routine

0.15 21.11.2007

• added 'ignore_missing_cmd_file' option for command overloading
• added –set option to add multiple config values
• added command overloading mechanism
• removed brackets from HTML view
• no MULTI label any more, standard is: no label
• multiple config files supported: -f <file> -f <file>…
• corrected line (<l10) of ePN optout statement
• added state evaluation reporting
• replaced ranges with state evaluation
• fixed bug with recursive concatenated performance labels
• added range support (check_multi now can replace check_cluster!)
• prepared recursive calls, added dotted line to HTML view
• fixed bug with parent timeout smaller than child timeout
• fixed error reporting for missing config file
• reordered report functions

0.14 21.10.2007

• added NAGIOS2 report mode with most important info in one line
• extra http report function
• setting report standard to 13 (verbose header line, stderr and perfdata)
• in order to get proper output on command line
• extended html report mode to full table
• performance star to the front (thx Joerg)
• added PNP link option for extended info
• added HTML coloring for extended info
• performance data label separator is now '::' to avoid mismatches
• added DISPLAY_COMMAND_LIST to show full list of commands in extended_output
• if plugin specified with full path, do not use libexec path
• added blanks to result lists to provide wrapping in HTML output

0.13 16.08.2007

• bugfix for handling of extended return code
• stderr output now trimmed
• bugfix for non existing environment vars
• suppress empty check lists '()' in output
• cleaned up 0 results in summary

0.12 25.07.2007

• performance switch replaced by report flag
• output of performance data is now default
• substitute macros a la $HOSTNAME$
• Time::Hires integrated

0.11 22.07.2007

• first version in SVN