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| 1 | +#!/bin/bash |
| 2 | +# |
| 3 | +# Check scalelite cluster health |
| 4 | +# Written by |
| 5 | +# |
| 6 | +# Usage: ./check_scalelite |
| 7 | +# |
| 8 | +# Description: |
| 9 | +# |
| 10 | +# Since the rake command via docker exec needs a lot of permissions, we do that in a cronjob for root and write to a tmp-file |
| 11 | +# the plugin then works with. |
| 12 | +# |
| 13 | +# Notes: |
| 14 | +# |
| 15 | +# needs a cronjob as root, should be in the interval you run the check: |
| 16 | +# */5 * * * * docker exec -t scalelite-api env COLUMNS=2048 bundle exec rake status > /tmp/scalelite.state |
| 17 | +# |
| 18 | + |
| 19 | +STATE_OK=0 |
| 20 | +STATE_WARNING=1 |
| 21 | +STATE_CRITICAL=2 |
| 22 | +STATE_UNKNOWN=3 |
| 23 | +STATE_DEPENDENT=4 |
| 24 | + |
| 25 | +PROGNAME=$(basename "$0") |
| 26 | +REVISION="0.1" |
| 27 | + |
| 28 | +# defaults |
| 29 | +CHECKFILE="/tmp/scalelite.state" |
| 30 | +critical=1 |
| 31 | +warning=2 |
| 32 | + |
| 33 | +print_usage() { |
| 34 | + echo "Usage: $PROGNAME --filename statefile -w <number> -c <number>" |
| 35 | + echo "Usage: $PROGNAME --help" |
| 36 | + echo "Usage: $PROGNAME --version" |
| 37 | +} |
| 38 | + |
| 39 | +print_help() { |
| 40 | + print_revision "$PROGNAME" $REVISION |
| 41 | + echo "" |
| 42 | + print_usage |
| 43 | + echo "" |
| 44 | + echo "scalelite cluster check plugin for icinga2" |
| 45 | + echo "" |
| 46 | + support |
| 47 | +} |
| 48 | + |
| 49 | +# Grab the command line arguments |
| 50 | + |
| 51 | +#logfile=$1 |
| 52 | +#oldlog=$2 |
| 53 | +#query=$3 |
| 54 | +exitstatus=$STATE_WARNING #default |
| 55 | +while test -n "$1"; do |
| 56 | + case "$1" in |
| 57 | + --help) |
| 58 | + print_help |
| 59 | + exit "$STATE_OK" |
| 60 | + ;; |
| 61 | + -h) |
| 62 | + print_help |
| 63 | + exit "$STATE_OK" |
| 64 | + ;; |
| 65 | + --version) |
| 66 | + print_revision "$PROGNAME" $REVISION |
| 67 | + exit "$STATE_OK" |
| 68 | + ;; |
| 69 | + -V) |
| 70 | + print_revision "$PROGNAME" $REVISION |
| 71 | + exit "$STATE_OK" |
| 72 | + ;; |
| 73 | + --filename) |
| 74 | + CHECKFILE=$2 |
| 75 | + shift |
| 76 | + ;; |
| 77 | + -w) |
| 78 | + warning=$2 |
| 79 | + shift |
| 80 | + ;; |
| 81 | + -c) |
| 82 | + critical=$2 |
| 83 | + shift |
| 84 | + ;; |
| 85 | + *) |
| 86 | + echo "Unknown argument: $1" |
| 87 | + print_usage |
| 88 | + exit "$STATE_UNKNOWN" |
| 89 | + ;; |
| 90 | + esac |
| 91 | + shift |
| 92 | +done |
| 93 | + |
| 94 | +# If the state file doesn't exist or is not readable, exit |
| 95 | + |
| 96 | +if [ ! -e "$CHECKFILE" ]; then |
| 97 | + echo "scalelite check error: state file $CHECKFILE does not exist! Did you set up the cronjob?" |
| 98 | + exit "$STATE_UNKNOWN" |
| 99 | +elif [ ! -r "$CHECKFILE" ] ; then |
| 100 | + echo "scalelite check error: state file $CHECKFILE is not readable!" |
| 101 | + exit "$STATE_UNKNOWN" |
| 102 | +fi |
| 103 | + |
| 104 | +# Count the number of nodes we have and handle errors when grep fails |
| 105 | +count=$(grep -c ".*" "$CHECKFILE" 2>&1) |
| 106 | +((count-=1)) |
| 107 | + |
| 108 | +if [[ $? -gt 1 ]]; then |
| 109 | + echo "scalelite check error: $count" |
| 110 | + exit "$STATE_UNKNOWN" |
| 111 | +fi |
| 112 | + |
| 113 | +# Count the number of nodes we have that are enabled and online and handle errors when grep fails |
| 114 | +count_eo=$(grep -c "enabled.*online" "$CHECKFILE" 2>&1) |
| 115 | +if [[ $? -gt 1 ]]; then |
| 116 | + echo "scalelite check error: $count" |
| 117 | + exit "$STATE_UNKNOWN" |
| 118 | +fi |
| 119 | + |
| 120 | +if [ "$count_eo" -gt "$warning" ]; then |
| 121 | + echo "check ok - $count_eo out of $count nodes are live" |
| 122 | + exitstatus=$STATE_OK |
| 123 | +else |
| 124 | + if [ "$count_eo" -gt "$critical" ]; then |
| 125 | + echo "check warning - $count_eo out of $count nodes are live" |
| 126 | + exitstatus=$STATE_WARNING |
| 127 | + else |
| 128 | + echo "check critical - $count_eo out of $count nodes are live" |
| 129 | + exitstatus=$STATE_CRITICAL |
| 130 | + fi |
| 131 | +fi |
| 132 | + |
| 133 | +exit "$exitstatus" |
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