mirror of
https://github.com/schoebel/mars
synced 2024-12-29 02:12:53 +00:00
444 lines
12 KiB
Bash
Executable File
444 lines
12 KiB
Bash
Executable File
#!/bin/bash
|
|
#
|
|
# This file is part of MARS project: http://schoebel.github.io/mars/
|
|
#
|
|
# Copyright (C) 2015 Thomas Schoebel-Theuer
|
|
# Copyright (C) 2015 1&1 Internet AG
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License along
|
|
# with this program; if not, write to the Free Software Foundation, Inc.,
|
|
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
|
|
|
|
#
|
|
# Nagios check, respecting debian package settings
|
|
#
|
|
# TST spring 2015 lab prototype
|
|
#
|
|
# Verbose mode and options / help is not yet supported.
|
|
|
|
#set -e
|
|
orig_vars="$(set | grep '^[_A-Za-z0-9]\+=' | cut -d= -f1)"
|
|
|
|
# Config file for defaults.
|
|
# May be used for hard override of the following definitions.
|
|
default_file="${default_file:-/etc/default/mars}"
|
|
|
|
# Defaults for configuration variables
|
|
service="${service:-MARS}"
|
|
check_enable=${check_enable:-1}
|
|
alive_window=${alive_window:-120} # seconds
|
|
responsive_window=${responsive_window:-600} # seconds
|
|
class_mode=${class_mode:-1}
|
|
warnings=${warnings:-0}
|
|
simulate=${simulate:-0}
|
|
verbose=${verbose:-0}
|
|
help=${help:-0}
|
|
|
|
mars_dir="${mars_dir:-/mars}"
|
|
config_dir="${config_dir:-/etc/mars}"
|
|
config_file="${config_file:-mars.rules}"
|
|
statusfile_dir="${statusfile_dir:-/var/cache/mars}"
|
|
status_last="${status_last:-$statusfile_dir/last.status}"
|
|
status_medium="${status_medium:-$statusfile_dir/medium.status}"
|
|
status_longterm="${status_long:-$statusfile_dir/longterm.status}"
|
|
window_medium=${window_medium:-3600}
|
|
window_longterm=${window_longterm:-$(( 3600 * 24 ))}
|
|
|
|
# Enable this script by default
|
|
ENABLED="true"
|
|
|
|
param_vars="$(set | grep '^[_A-Za-z0-9]\+=' | cut -d= -f1)"
|
|
|
|
# Derived from the defaults
|
|
file_list="./$config_file $config_dir/$config_file"
|
|
|
|
# Nagios Exit Codes
|
|
OK=0
|
|
WARNING=1
|
|
CRITICAL=2
|
|
UNKNOWN=3
|
|
|
|
function abort
|
|
{
|
|
local msg="$1"
|
|
echo "$service Unknown: $msg"
|
|
exit $UNKNOWN
|
|
}
|
|
|
|
function source_when_possible
|
|
{
|
|
local file="$1"
|
|
local type="$2"
|
|
|
|
if [[ -r "$file" ]]; then
|
|
. "$file" || abort "$type file $file is not parsable"
|
|
fi
|
|
}
|
|
|
|
source_when_possible "$default_file" "config"
|
|
|
|
# Allow forceful override of any _known_ variable at the command line
|
|
for i; do
|
|
if [[ "$i" =~ ^--[-_A-Za-z0-9]+$ ]]; then
|
|
param="${i#--}"
|
|
var="${param//-/_}"
|
|
[[ "$(eval "echo \"\$$var\"")" = "" ]] && abort "Variable '$var' is unknown"
|
|
eval "$var=1"
|
|
elif [[ "$i" =~ ^--[-_A-Za-z0-9]+= ]]; then
|
|
param="${i#--}"
|
|
var="${param%%=*}"
|
|
var="${var//-/_}"
|
|
val="${param#*=}"
|
|
[[ "$(eval "echo \"\$$var\"")" = "" ]] && abort "Variable '$var' is unknown"
|
|
eval "$var=$val"
|
|
elif [[ "$i" =~ ^-h$ ]]; then
|
|
help=1
|
|
elif [[ "$i" =~ ^-v$ ]]; then
|
|
(( verbose++ ))
|
|
else
|
|
abort "bad parameter syntax '$i'"
|
|
fi
|
|
done
|
|
|
|
# Almost silently exit if not enabled
|
|
if (( !check_enable)) || [[ "$ENABLED" != "true" ]] && (( !help )); then
|
|
echo "${service}_IS_DISABLED OK"
|
|
exit $OK
|
|
fi
|
|
|
|
########################
|
|
# Prepare Variables
|
|
|
|
var_list="ListOfPrimary ListOfNotYetPrimary ListOfRemainsPrimary ListOfSecondary ListOfAny"
|
|
val_list="ElapsedLast ElapsedMedium ElapsedLongterm ModuleLoaded Responsive SpacePercent SpaceRest"
|
|
array_list="SplitBrain Designated Alive AliveAge Sync Fetch Replay SyncRest FetchRest ReplayRest Emergency"
|
|
|
|
start_vars="$(set | grep '^[_A-Za-z0-9]\+=' | cut -d= -f1)"
|
|
|
|
for i in $var_list $val_list; do
|
|
eval "$i=''"
|
|
for age in Last Medium Longterm; do
|
|
eval "$age$i=''"
|
|
done
|
|
done
|
|
|
|
for i in $array_list; do
|
|
eval "declare -A $i"
|
|
for age in Last Medium Longterm; do
|
|
eval "declare -A $age$i"
|
|
done
|
|
done
|
|
|
|
basic_vars="$(set | grep '^[_A-Za-z0-9]\+=' | cut -d= -f1)"
|
|
|
|
########################
|
|
# Help text
|
|
|
|
if (( help )); then
|
|
all_vars="$(set | grep '^[_A-Za-z0-9]\+=' | cut -d= -f1 | sort)"
|
|
cat<<EOF
|
|
Nagios-compatible plugin for service $service
|
|
|
|
Usage: $0 [-h] {-v} {--<switch>} {--<var>=<value>}
|
|
|
|
The following parameter variables can be either passed by the
|
|
environment, or used for hard overrinding on the command line:
|
|
|
|
$(
|
|
declare -A orig
|
|
for i in $orig_vars; do
|
|
orig[$i]=1
|
|
done
|
|
declare -A param
|
|
for i in $param_vars; do
|
|
param[$i]=1
|
|
done
|
|
for i in $all_vars; do
|
|
[[ "$i" =~ _vars$ ]] && continue
|
|
if (( param[$i] && !orig[$i] )); then
|
|
echo "$i=$(eval "echo \${$i}")"
|
|
fi
|
|
done
|
|
)
|
|
|
|
The following CamelCase basic variables may be used in one of the
|
|
rules files $file_list:
|
|
|
|
$(
|
|
declare -A start
|
|
for i in $start_vars; do
|
|
start[$i]=1
|
|
done
|
|
declare -A basic
|
|
for i in $basic_vars; do
|
|
basic[$i]=1
|
|
done
|
|
for i in $all_vars; do
|
|
[[ "$i" =~ _vars$ ]] && continue
|
|
if (( basic[$i] && !start[$i] )); then
|
|
keys="$(eval echo "\${!$i[@]}")"
|
|
if [[ "$keys" != "0" ]]; then
|
|
echo "${i}[\$res]"
|
|
else
|
|
echo "$i"
|
|
fi
|
|
fi
|
|
done
|
|
)
|
|
EOF
|
|
exit 0
|
|
fi
|
|
|
|
########################
|
|
# Read in old status files
|
|
|
|
source_when_possible "$status_last" "last status"
|
|
source_when_possible "$status_medium" "medium-term status"
|
|
source_when_possible "$status_longterm" "longterm status"
|
|
|
|
marsadm=${marsadm:-$(which marsadm)}
|
|
# exit if marsadm is not found
|
|
command -v $marsadm > /dev/null || abort "Command marsadm '$marsadm' is not installed"
|
|
|
|
gmacro=""
|
|
########################
|
|
# get Global variables
|
|
|
|
ElapsedLast=$(( $(date +%s) - $(stat --printf="%Y" $status_last 2> /dev/null || echo "0") ))
|
|
ElapsedMedium=$(( $(date +%s) - $(stat --printf="%Y" $status_medium 2> /dev/null || echo "0") ))
|
|
ElapsedLongterm=$(( $(date +%s) - $(stat --printf="%Y" $status_longterm 2> /dev/null || echo "0") ))
|
|
|
|
ModuleLoaded="$( [[ -d /prco/sys/mars ]]; echo $? )"
|
|
|
|
gmacro+="Responsive=\"%is-alive{%{host}}\"\n"
|
|
|
|
SpacePercent="$(df $mars_dir | grep -o "[0-9]\%" | tail -1 | sed 's/\%//g' 2> /dev/null)"
|
|
|
|
gmacro+="SpaceRest=\"%rest-space{}\"\n"
|
|
|
|
data="$($marsadm --macro="$gmacro" --window=$responsive_window view)"
|
|
#echo "$data"
|
|
eval "$data"
|
|
|
|
# get a list of Primary and Secondary resource names
|
|
# don't run the while loop in a subshell, use the main shell
|
|
while read dashes txt res; do
|
|
read role
|
|
eval "ListOf$role+=' $res'"
|
|
eval "ListOfAny+=' $res'"
|
|
done <<EOF 2> /dev/null
|
|
$($marsadm view-role all 2> /dev/null)
|
|
EOF
|
|
|
|
########################
|
|
# get Resource variables
|
|
|
|
declare -A macro
|
|
for i in $ListOfAny; do
|
|
#SplitBrain[$i]="$($marsadm view-is-split-brain $i 2> /dev/null)"
|
|
macro[$i]+="SplitBrain[$i]=\"%is-split-brain{}\"\n"
|
|
#Emergency[$i]="$($marsadm view-is-emergency $i < /dev/null 2> /dev/null)"
|
|
macro[$i]+="Emergency[$i]=\"%is-emergency{}\"\n"
|
|
done
|
|
|
|
for i in $ListOfPrimary; do
|
|
: #echo "Pri '$i'"
|
|
done
|
|
|
|
for i in $ListOfSecondary; do
|
|
#Designated[$i]="$($marsadm view-get-primary $i 2> /dev/null)"
|
|
macro[$i]+="Designated[$i]=\"%get-primary{}\"\n"
|
|
#Alive[$i]="$($marsadm --macro="%is-alive{${Designated[$i]}}" --window=$alive_window view $i 2> /dev/null)"
|
|
macro[$i]+="Alive[$i]=\"%is-alive{${Designated[$i]}}\"\n"
|
|
#AliveAge[$i]="$($marsadm view-alive-age $i 2> /dev/null)"
|
|
macro[$i]+="AliveAge[$i]=\"%alive-age{}\"\n"
|
|
#Sync[$i]="$($marsadm view-todo-sync $i 2> /dev/null)"
|
|
macro[$i]+="Sync[$i]=\"%todo-sync{}\"\n"
|
|
#Fetch[$i]="$($marsadm view-todo-fetch $i 2> /dev/null)"
|
|
macro[$i]+="Fetch[$i]=\"%todo-fetch{}\"\n"
|
|
#Replay[$i]="$($marsadm view-todo-replay $i 2> /dev/null)"
|
|
macro[$i]+="Replay[$i]=\"%todo-replay{}\"\n"
|
|
#SyncRest[$i]="$($marsadm view-sync-rest $i 2> /dev/null)"
|
|
macro[$i]+="SyncRest[$i]=\"%sync-rest{}\"\n"
|
|
#FetchRest[$i]="$($marsadm view-fetch-rest $i 2> /dev/null)"
|
|
macro[$i]+="FetchRest[$i]=\"%fetch-rest{}\"\n"
|
|
#ReplayRest[$i]="$($marsadm view-replay-rest $i 2> /dev/null)"
|
|
macro[$i]+="ReplayRest[$i]=\"%replay-rest{}\"\n"
|
|
done
|
|
|
|
for i in ${!macro[*]}; do
|
|
data="$($marsadm --macro="${macro[$i]}" --window=$alive_window view $i)"
|
|
#echo "$data"
|
|
eval "$data";
|
|
done
|
|
|
|
########################
|
|
# compute Delta variables (when possible)
|
|
|
|
for i in $val_list; do
|
|
for age in Last Medium Longterm; do
|
|
if [[ "$(eval echo "\${$age$i}")" != "" ]]; then
|
|
declare Delta$age$i
|
|
eval "Delta$age$i=$(( $(eval echo "\${$i}") - $(eval echo "\${$age$i}") ))"
|
|
declare Rate$age$i
|
|
eval "Rate$age$i=$(( $(eval echo "\${Delta$age$i}") * 60 / Elapsed${age} ))"
|
|
fi
|
|
done
|
|
done
|
|
for i in $array_list; do
|
|
for j in $(eval echo "\${!$i[*]}"); do
|
|
for age in Last Medium Longterm; do
|
|
if [[ "$(eval echo "\${$age$i[$j]}")" != "" ]]; then
|
|
declare -A Delta$age$i[$j]
|
|
eval "Delta$age$i[$j]=$(( $(eval echo "\${$i[$j]}") - $(eval echo "\${$age$i[$j]}") ))"
|
|
declare -A Rate$age$i[$j]
|
|
eval "Rate$age$i[$j]=$(( $(eval echo "\${Delta$age$i[$j]}") * 60 / Elapsed${age} ))"
|
|
fi
|
|
done
|
|
done
|
|
done
|
|
|
|
########################
|
|
# Write out new status file
|
|
|
|
mkdir -p "$statusfile_dir"
|
|
(
|
|
for i in $var_list $val_list; do
|
|
echo "Last$i='$(eval echo "\${$i}")'"
|
|
done
|
|
|
|
for i in $array_list; do
|
|
for j in $(eval echo "\${!$i[*]}"); do
|
|
echo "Last$i[$j]='$(eval echo "\${$i[$j]}")'"
|
|
done
|
|
done
|
|
) > "${status_last}.tmp" && \
|
|
mv "${status_last}.tmp" "${status_last}" && \
|
|
if ! [[ -r $status_medium.tmp ]] || (( $(stat --printf="%Y" $status_medium.tmp) < $(stat --printf="%Y" $status_last) - ( $window_medium / 2 ) )); then
|
|
mv -f $status_medium.tmp $status_medium 2> /dev/null || true
|
|
sed 's/^Last/Medium/' < $status_last > $status_medium.tmp2 && \
|
|
mv $status_medium.tmp2 $status_medium.tmp
|
|
fi &&\
|
|
if ! [[ -r $status_longterm.tmp ]] || (( $(stat --printf="%Y" $status_longterm.tmp) < $(stat --printf="%Y" $status_last) - ( $window_longterm / 2 ) )); then
|
|
mv -f $status_longterm.tmp $status_longterm 2> /dev/null || true
|
|
sed 's/^Last/Longterm/' < $status_last > $status_longterm.tmp2 && \
|
|
mv $status_longterm.tmp2 $status_longterm.tmp
|
|
fi
|
|
|
|
########################
|
|
# Output Handling
|
|
|
|
code_max=0
|
|
|
|
function _out_txt
|
|
{
|
|
local txt="$1"
|
|
local res="$2"
|
|
|
|
txt="$(echo "$txt" | sed 's/\${/\\\${/g')"
|
|
# eval down (fixedpoint iteration)
|
|
local old=""
|
|
while [[ "$txt" != "$old" ]]; do
|
|
old="$txt"
|
|
txt="$(eval echo "$txt")"
|
|
done
|
|
echo "$service $txt"
|
|
|
|
local this_code=0
|
|
echo "$txt" | grep -i -q "WARNING" && this_code=1
|
|
echo "$txt" | grep -i -q "CRITICAL" && this_code=2
|
|
(( this_code > code_max )) && code_max=$this_code
|
|
return 0
|
|
}
|
|
|
|
declare -g -A Triggered
|
|
|
|
function eval_rule
|
|
{
|
|
local rule_var="$1"
|
|
local rule_op="$2"
|
|
local rule_val="$3"
|
|
local rule_txt="$4"
|
|
local res="$5"
|
|
|
|
local status=0
|
|
|
|
if [[ "$(eval echo "\${$rule_var[$res]}")" != "" ]]; then
|
|
status=$(( $rule_var[$res] $rule_op $rule_val || simulate ))
|
|
if (( verbose )); then
|
|
echo "$res : $rule_var[$res] $rule_op $rule_val : result $status" >> /dev/stderr
|
|
fi
|
|
if [[ "$rule_txt" =~ "&&" ]]; then
|
|
read dummy rule_var rule_op rule_val rule_txt <<< "$rule_txt"
|
|
eval_rule "$rule_var" "$rule_op" "$rule_val" "$rule_txt" "$res" > /dev/null
|
|
status=$(( status && $? ))
|
|
elif [[ "$rule_txt" =~ "||" ]]; then
|
|
read dummy rule_var rule_op rule_val rule_txt <<< "$rule_txt"
|
|
eval_rule "$rule_var" "$rule_op" "$rule_val" "$rule_txt" "$res" > /dev/null
|
|
status=$(( status || $? ))
|
|
fi
|
|
elif (( verbose )); then
|
|
echo "Variable $rule_var[$res] not found" >> /dev/stderr
|
|
fi
|
|
if (( status )); then
|
|
echo "$rule_txt"
|
|
fi
|
|
return $status
|
|
}
|
|
|
|
function run_rule
|
|
{
|
|
local rule_var="$1"
|
|
local rule_op="$2"
|
|
local rule_val="$3"
|
|
local rule_txt="$4"
|
|
local status=0
|
|
|
|
declare -g -A Triggered
|
|
local keys="$(eval echo "\${!$rule_var[@]}")"
|
|
for res in $keys; do
|
|
# The first triggered rule will win.
|
|
# This will be rule with the lowest class.
|
|
if [[ "${Triggered[$res]}" == "" ]]; then
|
|
local txt="$(eval_rule "$rule_var" "$rule_op" "$rule_val" "$rule_txt" "$res")"
|
|
if [[ "$txt" != "" ]] ; then
|
|
#echo "AHA $res $txt"
|
|
# Remember the result
|
|
Triggered[$res]="$txt"
|
|
_out_txt "$txt" "$res"
|
|
fi
|
|
fi
|
|
done
|
|
}
|
|
|
|
function run_all_rules
|
|
{
|
|
local rule_class rule_var rule_op rule_val rule_txt
|
|
while read rule_class rule_var rule_op rule_val rule_txt; do
|
|
run_rule "$rule_var" "$rule_op" "$rule_val" "$rule_txt"
|
|
done <<EOF
|
|
$(cat $file_list 2>/dev/null |\
|
|
grep -v '^#' |\
|
|
grep -v '^\s*$' |\
|
|
sort -n)
|
|
EOF
|
|
}
|
|
|
|
run_all_rules
|
|
|
|
if (( !code_max )); then
|
|
echo "$service OK"
|
|
fi
|
|
exit $code_max
|