ctdb/config/events.d/40.fs_use

   1 #!/bin/sh
   2 # ctdb event script for checking local file system utilization
   3
   4 [ -n "$CTDB_BASE" ] || \
   5     export CTDB_BASE=$(cd -P $(dirname "$0") ; dirname "$PWD")
   6
   7 . $CTDB_BASE/functions
   8 loadconfig
   9
  10 case "$1" in
  11     monitor)
  12         # check each specified fs to be checked
  13         # config format is <fs_mount>:<fs_threshold>
  14         for fs in $CTDB_CHECK_FS_USE
  15         do
  16             # parse fs_mount and fs_threshold
  17             fs_mount="${fs%:*}"
  18             fs_threshold="${fs#*:}"
  19
  20             # check if given fs_mount is existing directory
  21             if [ ! -d "$fs_mount" ]; then
  22                 echo "Directory $fs_mount does not exist"
  23                 exit 1
  24             fi
  25
  26             # check if given fs_threshold is number
  27             if ! (echo "$fs_threshold" | egrep -q '^[0-9]+$')  ; then
  28                 echo "Threshold $fs_threshold is invalid number"
  29                 exit 1
  30             fi
  31
  32             # get utilization of given fs from df
  33             fs_usage=$(df -kP $fs_mount | sed -n -e 's@.*[[:space:]]\([[:digit:]]*\)%.*@\1@p')
  34
  35             # check if fs_usage is number
  36             if [ -z "$fs_usage" ] ; then
  37                 echo "Unable to get FS utilization for $fs_mount"
  38                 exit 1
  39             fi
  40
  41             # check if fs_usage is higher than or equal to fs_threshold
  42             if [ "$fs_usage" -ge "$fs_threshold" ] ; then
  43                 echo "ERROR: Utilization of $fs_mount ($fs_usage%) is higher than threshold ($fs_threshold%)"
  44                 exit 1
  45             fi
  46         done
  47
  48         ;;
  49
  50     *)
  51         ctdb_standard_event_handler "$@"
  52         ;;
  53 esac
  54
  55 exit 0