Random checks randomly failing with random errors

[William David Edwards]

I have setup Sensu on three Windows servers yesterday. Two issues:

check-windows-ram.rb randomly returns: Access is denied.
check-windows-disk.rb randomly returns: Invalid XSL format (or) file name. It does actually return an OK with the disk space usage, but that warning wasn't there yesterday.
check-windows-process.rb randomly returns the errors in this issue: #33

What I gathered from that issue is that the fix is specifying the path to the Ruby executable. So I did:

/opt/sensu/embedded/bin/ruby.exe /opt/sensu/embedded/bin/check-windows-process.rb.bat -p activedirectory

I also tried:

C:\opt\sensu\embedded\bin\ruby.exe C:\opt\sensu\embedded\bin\check-windows-process.rb.bat -p activedirectory

Unfortunately, both return an error:

/opt/sensu/embedded/bin/check-windows-process.rb.bat:1: syntax error, unexpected tCONSTANT, expecting end-of-input
@ECHO OFF

Nothing changed on the servers. The same problems occurred on all three Windows Servers. It's Windows Server 2012.

Strange thing is that Sensu was setup on a Windows Server 2016 two days ago and this issue hasn't come up.

[Chris Sabo]

@WilliamDEdwards Couple of points

• your file extension is defined as .rb.bat in your check definitions, did you modify the checks?
• Sensu will convert the binary path, so "/opt/sensu/embedded/bin/ruby" is correct.

Try changing the extension back, and if you modified the code, re-pull from the repository!

Just in case it helps, here is an example check definition for one of my windows ruby checks (puppet)

  sensu::check{ 'cw-web-healthCheck_api-homecare_app':
    command     => '/opt/sensu/embedded/bin/ruby /opt/sensu/embedded/bin/check-homecare-api.rb log',
    handlers    => 'win_handler',
    interval    => 300,
    subscribers => 'homecare_app',
    standalone  => false,
    occurrences => 1,
    notify      => Service['sensu-enterprise'],
  }