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check_eol 8.12 KiB
#!/bin/bash
# ======================================================================
#
# Icinga/ Nagios Check
# EOL - End of life detection - Warn before reaching end of life
#
# - includes inc_pluginfunctions
# - eol data are organized in check_eol*.cfg
# - detection functions are in check_eol-detect-[name]
#
# ----------------------------------------------------------------------
#
# REQUIREMENTS:
# - linux (Centos, Debian, Ubuntu, ...)
#
# ----------------------------------------------------------------------
#
# SYNTAX:
#
# check_eol
# show help and known product keys
#
# check_eol PRODUCT
# detect PRODUCT and its EOL date in the *cfg files.
# Remark: all keys are lowercase. Some product keys are followed by a
# major version, some by major and a minor version,
#
# check_eol detect[KEY]
# There is a special prefix "detect".
# KEY is one of OS|PHP .. you can use uppercase or lowercase.
#
# ----------------------------------------------------------------------
#
# EXAMPLES:
#
# use a product key and version
# check_eol centos 7
# check_eol php 7.4
#
# use auto detection of a version
# check_eol os detect
# check_eol php detect
#
# ----------------------------------------------------------------------
# 2020-02-21 v1.0 <axel.hahn@iml.unibe.ch>
# 2020-03-05 v1.1 <axel.hahn@iml.unibe.ch> switch to ph.* helper functions
# 2021-03-26 v1.2 <axel.hahn@iml.unibe.ch> test major version if minor version was not detected
# ======================================================================
. `dirname $0`/inc_pluginfunctions
eolcfg="${0}-data/*.cfg"
_version="0.3"
# --- limits
typeset -i iDaysWarn=365
typeset -i iDaysCritical=90
bDebug=false
myKey=
myEolEnd=
typeset -i myDaysLeft=
# ----------------------------------------------------------------------
# automatic detection
# ----------------------------------------------------------------------
# auto detetct an os or a version based on cli output
# used on param detect*
# global string myKey name of product
function autodetect(){
myVersion=
case $myKey in
'os')
# ----- detect operating system and major version
# see inc_pluginfunctions
myKey=`ph.getOS`
myVersion=`ph.getOSMajor`
;;
'mysqlany')
local _tmpfile=/tmp/detect_mysql_$$
mysql --version >$_tmpfile 2>&1
if [ $? -ne 0 ]; then
rm -f $_tmpfile
ph.abort "UNKNOWN: mysql was not found. A Mysql version cannot be detected."
fi
# default: mysql
myKey=mysql
# scan for forks:
# todo: add ... percona ... memdb ... whatever
grep "MariaDB" $_tmpfile >/dev/null && myKey=mariadb
rm -f $_tmpfile
;;
*)
# echo ERROR: detection for [$1] is not implemented
esac
detectorPlugin="$0-versiondetect/detect-$myKey"
if [ -x "$detectorPlugin" ]; then
myVersion=`. "$detectorPlugin"`
fi
if [ -z "$myVersion" ]; then
ph.abort "UNKNOWN: [$myKey] was not detected properly. It is unknown or output for version cannot be parsed."
fi
}
# ----------------------------------------------------------------------
# functions for eol check
# ----------------------------------------------------------------------
# get count of days left to a given date
# param string date as "YYYY-MM-DD"
function getDaysLeft(){
local mydate=$1
echo $mydate | grep "[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]" >/dev/null
if [ $? -eq 0 ]; then
typeset -i local tsend=`date --date="$mydate" +%s`
typeset -i local daysLeft=($tsend - `date +%s`)/60/60/24
echo $daysLeft
fi
}
# detect product in *cfg files and find its line with EOL information
# global string myKey name of product
# global string myVersion its version
function findEolDate(){
local myVerKey="$myVersion."
local line=''
local bContinue=0
while [ $bContinue = 0 ]; do
myVerKey=$( echo $myVerKey | rev | cut -f 2- -d "." | rev )
line=`grep "^$myKey:$myVerKey:" $eolcfg | sort -n | tail -1`
test -z "$line" || bContinue=1
echo $myVerKey | grep "\." >/dev/null || bContinue=1
done
echo $line
}
# ----------------------------------------------------------------------
# MAIN
# ----------------------------------------------------------------------
# --- no param? show help
if [ $# -lt 2 ]; then
cat <<EOH
______________________________________________________________________
CHECK EOL :: v${_version}
(c) Institute for Medical Education - Univerity of Bern
Licence: GNU GPL 3
______________________________________________________________________
Check and of support of an OS or a product.
The dates are defined in the files check_eol-*.cfg
For detailed information see `basename $0`.md
USAGE
$ `basename $0` [-c CRITICAL] [-w WARING] PRODUCT VERSION
PARAMETERS
PRODUCT set a product; known product keys are listed below
`grep "^[a-zA-Z]" $eolcfg | cut -f 2 -d ":" | sort -un | sed "s#^# #g"`
VERSION set a version.
Autodetection:
There is a special handling vor version "detect".
You can set "os" as product to detect the (linux) distribution.
See examples below.
OPTIONS
-c set critical limit; default $iDaysCritical
-w set warning limit; default $iDaysWarn
EXAMPLES
`basename $0` php 7.4
`basename $0` -w 100 -c 30 php 7.4
`basename $0` os detect
`basename $0` php detect
EOH
ph.abort
fi
# --- parse params I: override warning and critical
typeset -i iShift=0
while getopts ":c: :w:" opt
do
case $opt in
c)
iDaysCritical=$OPTARG
iShift=$iShift+2
;;
w)
iDaysWarn=$OPTARG
iShift=$iShift+2
;;
*)
ph.abort "ERROR: parameter unknown -- $opt"
esac
done
shift $iShift
# --- verify warning and critical
if [ $iDaysWarn -lt $iDaysCritical ]; then
ph.abort "ERROR: warning limit $iDaysWarn cannot be lower critical $iDaysCritical"
fi
# --- parse params II: get product and version
myKey=$1
myVersion=$2
test $myVersion = "detect" && autodetect $myKey
eol=$( findEolDate "$myKey" "$myVersion" )
if [ -z "$eol" ]; then
ph.setStatus "unknown"
echo "UNKNOWN. Sorry, [$myKey $myVersion] was not found in $eolcfg."
echo
grep "^$myKey:" $eolcfg >/dev/null
if [ $? -eq 0 ]; then
echo "HINT: the product [$myKey] is known ... but not the version [$myVersion] ... or its date is invalid i.e. 30th of feb or not YYYY-MM-DD"
echo
grep "^$myKey:" $eolcfg | grep -v ":$myKey:[0-9]" | cut -f 3- -d ":"
echo
echo "Maybe an admin can add the version in `grep -l "^$myKey:" $eolcfg`"
echo "Existing/ known versions are:"
grep "^$myKey:[0-9]" $eolcfg | cut -f 3 -d ":" | sort -un
else
echo "The product key [$myKey] was not detected in any version."
fi
else
myEolVer=`echo $eol | cut -f 3 -d ":"`
myEolEnd=`echo $eol | cut -f 4 -d ":"`
myComment=`echo $eol | cut -f 5 -d ":"`
myDaysLeft=`getDaysLeft $myEolEnd`
# --- verify days left with limits
ph.setStatus "ok"
if [ $myDaysLeft -lt $iDaysWarn ]; then
ph.setStatus "warning"
if [ $myDaysLeft -lt $iDaysCritical ]; then
ph.setStatus "critical"
fi
fi
if [ $myDaysLeft -ge 0 ]; then
ph.status "[$myKey $myEolVer] ends on $myEolEnd ... $myDaysLeft days left $myComment"
else
echo "[$myKey $myEolVer] ended on $myEolEnd ... `echo $myDaysLeft | sed 's#\-##'` days EXPIRED ALREADY !!! $myComment"
fi
echo
grep "^$myKey:" $eolcfg | grep -v ":$myKey:[0-9]" | cut -f 3- -d ":"
echo
echo "Limit Info: warn below $iDaysWarn days; critical below $iDaysCritical days"
ph.perfadd "$myKey-v$myEolVer" "${myDaysLeft}" $iDaysWarn $iDaysCritical 0
fi
# --- bye
ph.exit
# ----------------------------------------------------------------------