check_disk

  • A sensu check for disks.
  • A Sensu Plugin to check disk block and inode usage by mountpoint.
  • Takes a mount point in as path.
  • Takes warning, and critical parameters that set a percentage [0-100].
  • Takes parameters to check either file serial numbers (inodes) or blocks.
  • Determines total number of inodes|blocks.
  • Determines baseline percent based on total number.
  • Determines usage by subtracting available from total number
  • Compares usage to see if greater than baseline.

See: statvfs(3) See: https://github.com/djberg96/sys-filesystem

"Because parsing the output of df is a bad idea."

Install

This project is laid out as a Ruby Gem.

You can add this repository to your Gemfile, or create a gem and install that.

Use

check_disk.rb -h
Usage: check_disk.rb (options)
    -b                               Boolean for enabling block code path.
    -c PERCENT                       The high water mark for `critical` alerts. eg; 75
    -i                               Boolean for enabling inode code path.
    -p PATH                          The `path` or `mount point` we are checking. eg; /mnt
    -w PERCENT                       The high water mark for `warning` alerts. eg; 50

$ check_disk.rb -i
CheckDisk::CLI WARNING: 65% of inodes used. path: / total: 121846308 available: 42055237

Build

gem build check_disk.gemspec

Test

make test

or

bundle exec rake test:all

Coverage

View test coverage executing make test then opening coverage/index.html