Nagios Plugin to Enumerate and Erase disks on rack mounted servers
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I work for a small NOC. Customers Have asked for the ability to erase disks on hosted servers. All servers run some flavor of Linux, Mostly SLES and Red Hat.
We need a NAGIOS style plugin to erase disks, using a number of methods outlined below.
Project must be written in Perl, preferably Object Oriented Perl
Must be written in pure Perl.
Minimum Perl version on each server is [url removed, login to view]
The Following Perl Modules are allowed::
All Standard Perl modules
Other modules by Arrangement
There can be 2 to 24 disks on each server, A customer can own more than one server in a rack, or have a whole rack of servers.
SSH is used to communicate between servers.
Plugin will be run as root
Needs to do 2 to 24 disks and up
built in help
one, many or all disks can be targeted by block device name or slot number ( see below)
Needs to use the following utilities;
Controller based secure erase ( see below)*
dd can be used to 'zero' drives'
Dban option need only support 'DoD 5220-22-M standard 3-pass' standard
**Preferred method** is controller based secure erase.
All RAID/Disk controllers are made by LSI.
MegaCLI utility is installed on all servers
MegaCli commands and SNMP commands are available to be used.
LSI provides extensive documentation on their website about how to use this utility
SNMP is also available for monitoring
[Normal [ |ErasePattern ErasePatternA|ErasePattern ErasePatternA ErasePattern ErasePatternB]]|
[Thorough [ |ErasePattern ErasePatternA|ErasePattern ErasePatternA ErasePattern ErasePatternB]]]
| Stop | ShowProg | ProgDsply [-PhysDrv [E0:S0,E1:S1,...] | -Lx|-L0,1,2|-LALL] -aN|-a0,1,2|-aALL
Progress can also be tracked from Controller Logs. There are existing NAGIOS Plugins to monitor disks via megacli/snmp
There are important considerations to be made,versus controller output and Linux output. Linux devices must be mapped to Controller devices and/or slots
We need to be sure we are targeting the right disks
Disks can be in JBOD/ RAID 0/ RAID 1/RAID 5/RAID6 configurations. controller commands must be used to tear down RAID config on the drives, LINUX core utilities can be used to determine drive health, mount/unmount the target device(s)
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