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#!/bin/bash
STATE_OK=0
STATE_WARNING=1
STATE_CRITICAL=2
STATE_UNKNOWN=3
socket=$1
info=$(redis-cli -s $socket info replication)
lag=$(echo "$info" | grep master_last_io_seconds_ago | cut -d":" -f2 | sed -e "s/\s//g")
slave_offset=$(echo "$info" | grep slave_repl_offset | cut -d":" -f2 | sed -e "s/\s//g")
master_offset=$(echo "$info" | grep master_repl_offset | cut -d":" -f2 | sed -e "s/\s//g")
offset=$(($master_offset - $slave_offset))
exit_code=$?
if [[ $exit_code -ne 0 ]]; then
echo "UNKNOWN - Impossible to run redis command"
exit $STATE_UNKNOWN
elif [[ -z "$lag" ]]; then
echo "UNKNOWN - No replication found"
exit $STATE_UNKNOWN
else
output="Replication lag for redis is ${lag}s and offset is ${offset}"
LC_ALL=C lag=$(printf "%.*f" 0 $lag)
if [[ $lag -lt 5 && $offset -lt 5 ]]; then
echo "OK - $output | time=${lag}s;5;10;0; offset=${offset};5;10;0;"
exit $STATE_OK
elif [[ $lag -lt 10 && $offset -lt 10 ]]; then
echo "WARNING - $output | time=${lag}s;5;10;0; offset=${offset};5;10;0;"
exit $STATE_WARNING
else
echo "CRITICAL - $output | time=${lag}s;5;10;0; offset=${offset};5;10;0;"
exit $STATE_CRITICAL
fi
fi
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