Dashboard List Disks Multiple Servers

[ludditetech]

(Zabbix 6.4.5)

Wanting dashboard widget to list all disks on multiple windows servers, to iterate through all the drives attached to server and display them in a widget.
C Drive works fine, extra drives have different letters on different servers, some are F some M some U etc.

I tried vfs.fs.size[{#FSNAME},free] but get no data.

Is there a way to iterate through attached disks - drives?

[vijayk]

You can use Top hosts in widget type and select host group and add Host as 1st column and other disks are as 2nd, 3rd and so on.

[ludditetech]

Thanks vijayk, tried but i might not have understood your instruction, will try again.

[vijayk]

You can use Top hosts in widget type and select host group and add Host as 1st column and other disks are as 2nd, 3rd and so on.

[ludditetech]

Thanks vijayk, tried but i might not have understood your instruction, will try again.

[ludditetech]

Something like this vijayk?

[vijayk]

Something like this vijayk?

Yes, perfect.

[ludditetech]

Thanks, wondering if there is a way to use disk number variable if that exists in vfs.fs.dependent.size{disk1} or similar macro?
(bit of a newb at this more advanced stuff)

[DrunkSkeeterPilot]

I also need to know if there's a way to have monitoring dashboard show a calculated item that shows the most full disk of all found disks on the server in question.

I.e. if a server has disks with utilizations C at 40%, D at 24%, E at 76%, F at 1% and G at 100%, how to get the dashboard column for disk space utilization to reflect the maximum utilized disk, which in this example would be G, so it should show a 100% value on the column data. Because most servers may only have C, or C and D disks.

Edit:

Nvm I figured it out

Formula for the Calculated Item under my custom windows template:

max(last_foreach(//vfs.fs.dependent.size[*,pused]))

[tcweb]

I'm a few rungs below you when it comes to understanding the advanced stuff. Can you explain how you set up your calculated item?
Some questions: what is the key value? Does your item require preprocessing?

*disregard*, I was trying to build a template from scratch. I think I'll learn faster by building on top of an existing template.

-tcweb

[tcweb]

OK, I was able to make your query work. But my question has changed to: How can I also identify the drive label (drive letter, etc) that is associated with the fullest drive?
It would be nice to show the end user which drive is causing the issue/alert.

-tcweb

[TobiasB]

OK, I was able to make your query work. But my question has changed to: How can I also identify the drive label (drive letter, etc) that is associated with the fullest drive?
It would be nice to show the end user which drive is causing the issue/alert.

-tcweb

Hello forum,
This would be interesting if someone had a solution to also pass the drive letter of the fullest drive to the Top 10 list in any way?

regards Tobias

[tko]

I also need to know if there's a way to have monitoring dashboard show a calculated item that shows the most full disk of all found disks on the server in question.

I.e. if a server has disks with utilizations C at 40%, D at 24%, E at 76%, F at 1% and G at 100%, how to get the dashboard column for disk space utilization to reflect the maximum utilized disk, which in this example would be G, so it should show a 100% value on the column data. Because most servers may only have C, or C and D disks.

Edit:

Nvm I figured it out

Formula for the Calculated Item under my custom windows template:

max(last_foreach(//vfs.fs.dependent.size[*,pused]))

Sorry i do not check this out.

Where i have to put this line?
in My Top Hosts list?

"max(last_foreach(//vfs.fs.dependent.size[*,pused]))"

[tcweb]

tko, you need to create a new calculated item. (ideally in a template that you could apply to a group of hosts).

but to test, you can create a new item on one specific host.

[paulb007]

HI

Thanks, i have this working, it shows the drive with the most used space - However Is there a way to include the volume name and drive letter (windows) / linux device (e.g. sda1)?

Thanks

[paulb007]

OK - I have a work around for now.

Linux
Create a script (e.g., /etc/zabbix/fullest_drive.sh)

#!/bin/bash
# Use the df command to list disk usage, then find the fullest disk.
# Adjust the command as necessary if your environment or output format is different.
df -P | awk 'NR>1 {print $5 " " $6}' | sed 's/%//g' | sort -nr | head -1 | awk '{print $2}'

Making the script executable
chmod +x /etc/zabbix/fullest_drive.sh

Add a custom user parameter in your Zabbix agent configuration, mine is here /etc/zabbix/zabbix_agentd.conf and I put the parameter at the end

UserParameter=fullest.drive.name,/etx/zabbix/fullest_drive.sh

Restart the agent

Zabbix frontend, create a new item - I added mine to the template Linux by Zabbix agent


Windows
Create a PowerShell script (e.g., C:\Scripts\fullest_drive.sh) - I put mine on a share so if i needed to edit it only has to be done once

# fullest_drive.ps1
# This script identifies the fixed drive with the highest usage
# (i.e., the lowest free space percentage)

# Retrieve all fixed drives (DriveType=3 indicates local disks)
$drives = Get-WmiObject Win32_LogicalDisk -Filter "DriveType=3"

if (!$drives) {
Write-Output "No fixed disks found"
exit 1
}

$maxDrive = $null
$maxUsage = 0

foreach ($drive in $drives) {
# Ensure the drive size is greater than zero
if ($drive.Size -gt 0) {
# Calculate usage percentage as: 100 - (% free)
$usage = 100 - ( ($drive.FreeSpace / $drive.Size) * 100 )
if ($usage -gt $maxUsage) {
$maxUsage = $usage
$maxDrive = $drive.DeviceID
}
}
}

# Output the drive identifier (e.g., 'C:')
Write-Output $maxDrive

Add a custom user parameter in your Zabbix agent configuration, mine is here c:\program files\zabbix agent 2\zabbix_agentd.conf and I put the parameter at the end

UserParameter=fullest.drive,powershell -NoProfile -ExecutionPolicy Bypass -File "C:\Admin\Zabbix_scripts\fullest_drive.ps1"

Restart the agent

Zabbix frontend, create a new item - I added mine to the template Windowsby Zabbix agent

Adding to the dashboard