Check_MK/Nagios script to monitor multipath count

Question

i'm noob in bash.

I want to create check so if 1 path is dead i want to get warning message,more than 1 path down-critical, no dead path-all is OK

i would use this command and it's output:

powermt display dev=all 

CHECK_DEGRADED=/usr/local/bin/sudo /sbin/powermt display | grep dead| wc -l
 if [ $CHECK_DEGRADED -eq 1 ]; then

status=1
statustxt=WARNING

 else if [ $CHECK_DEGRADED -gt 1 ];  then

status=2
statustxt=CRITICAL


else

status=0
statustxt=OK

 fi 

output should be something like: Path is in $statustxt state

Answer 1

First of all Welcome to Stack Overflow.

1. declare an array of path
2. scan on all of them
3. check if the path exist
4. if exist increment a counter
5. then check the counter for exit status

Something like that should be fine:

deadPath=0
 declare -a pathArray=(/usr/local/bin/sudo /sbin/powermt display)
 for i in "${pathArray[@]}"
 do
   if [ -d "$i" ]; then
      # Will enter here if path exists
      echo "Path $i Exists"
   else
    deadPath=$[$deadPath+1] 
   fi
done
if (( deadPath > 1 )); then
  echo "Critical"
  exit 2
elif (( deadPath == 1 )); then
  echo "Warning"
  exit 1
else 
  echo "OK"
  exit 0
fi