LLD vfs.fs.discovery triggers depending on disk size

[tomstocker]

Hi all

We do LLD using vfs.fs.discovery. Now the triggers are in % which is sometimes good and sometimes bad. I'd like to do something like this:

last(vfs.fs.size[{#FSNAME},free].last(0))<5G&last(vfs.fs.size[{#FSNAME},free].last(0))>1024G

but where do I need to put this?

Basically I want triggers depending on disk size, if more than 1TB, I want to use another value as for smaller disks.

But I need some hint on where to do that.

Best regards, Tom

[tomstocker]

I've macroified the whole thing as like:

Trigger prototypes:

Disaster Dynamic largedisk: Free disk space is less than {$TR_LARGEDISK_LOW_DISASTER} on FS {#FSNAME}
last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},pfree])<{$TR_LARGEDISK_LOW_DISASTER} and last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},total])>{$TR_DISK_SIZE_SWITCH}
Warning Dynamic largedisk: Free disk space is less than {$TR_LARGEDISK_LOW_WARNING} on FS {#FSNAME}
last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},pfree])<{$TR_LARGEDISK_LOW_WARNING} and last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},total])>{$TR_DISK_SIZE_SWITCH}
Disaster Dynamic smalldisk: Free disk space is less than {$TR_SMALLDISK_LOW_DISASTER} on FS {#FSNAME}
last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},pfree])<{$TR_SMALLDISK_LOW_DISASTER} and last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},total])<{$TR_DISK_SIZE_SWITCH}
Warning Dynamic smalldisk: Free disk space is less than {$TR_SMALLDISK_LOW_WARNING} on FS {#FSNAME}
last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},pfree])<{$TR_SMALLDISK_LOW_WARNING} and last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},total])<{$TR_DISK_SIZE_SWITCH}

Additional Macros to define:

{$TR_DISK_SIZE_SWITCH} -> define size of a "large disk" like 1024G
{$TR_LARGEDISK_LOW_DISASTER} -> 2 (in percent)
{$TR_LARGEDISK_LOW_WARNING} -> 10 (in percent)
{$TR_SMALLDISK_LOW_DISASTER} -> 2 (in percent)
{$TR_SMALLDISK_LOW_WARNING} -> 10 (in percent)

Hope that helps anybody.

BR, Tom

[PeterZielony]

For hints read this
https://www.zabbix.com/documentation...ed_filesystems

and this:
https://www.zabbix.com/documentation...ger_prototypes

for trigger syntax and operators:

https://www.zabbix.com/documentation/current/en/manual/config/triggers/expression

in general this is well written documentation with tons of examples. I suggest starting there with each problem

[tomstocker]

very helpful, thank you

[tomstocker]

I've ended up with with 2 triggers like:


last(/Template.Name/vfs.fs.size[{#FSNAME},free])<2 and last(/Template.Name/vfs.fs.size[{#FSNAME},total])<500G
last(/Template.Name/vfs.fs.size[{#FSNAME},free])<50G and last(/Template.Name/vfs.fs.size[{#FSNAME},total])>500G

BR, Tom

[tomstocker]

I've macroified the whole thing as like:

Trigger prototypes:

Disaster Dynamic largedisk: Free disk space is less than {$TR_LARGEDISK_LOW_DISASTER} on FS {#FSNAME}
last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},pfree])<{$TR_LARGEDISK_LOW_DISASTER} and last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},total])>{$TR_DISK_SIZE_SWITCH}
Warning Dynamic largedisk: Free disk space is less than {$TR_LARGEDISK_LOW_WARNING} on FS {#FSNAME}
last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},pfree])<{$TR_LARGEDISK_LOW_WARNING} and last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},total])>{$TR_DISK_SIZE_SWITCH}
Disaster Dynamic smalldisk: Free disk space is less than {$TR_SMALLDISK_LOW_DISASTER} on FS {#FSNAME}
last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},pfree])<{$TR_SMALLDISK_LOW_DISASTER} and last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},total])<{$TR_DISK_SIZE_SWITCH}
Warning Dynamic smalldisk: Free disk space is less than {$TR_SMALLDISK_LOW_WARNING} on FS {#FSNAME}
last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},pfree])<{$TR_SMALLDISK_LOW_WARNING} and last(/company.Templ.Linux-Low-Level-Discovery/vfs.fs.size[{#FSNAME},total])<{$TR_DISK_SIZE_SWITCH}

Additional Macros to define:

{$TR_DISK_SIZE_SWITCH} -> define size of a "large disk" like 1024G
{$TR_LARGEDISK_LOW_DISASTER} -> 2 (in percent)
{$TR_LARGEDISK_LOW_WARNING} -> 10 (in percent)
{$TR_SMALLDISK_LOW_DISASTER} -> 2 (in percent)
{$TR_SMALLDISK_LOW_WARNING} -> 10 (in percent)

Hope that helps anybody.

BR, Tom