monitor disk usage

[ulises]

Hi

I have a question. I need to set up a hard drive monitor in some servers and I cant figure it out how to do it

what I need is that we will get an alert if any partition is over 80% used

how can I create a trigger like that?

thanks in advance

[simonuk1]

If you have a look at the triggers in the Template_Tomcat there are examples for 70% threshold.

Hope that helps

Simon

[ulises]

thx for the reply; however, seems like the other admin deleted the tomcat template

[tchjts1]

Templates are here:

http://www.zabbix.com/wiki/doku.php?...trib:templates

[Kai-Kai]

If I right understand what you want to do, you have to :

1. create an item to measure the free space in the partition :
- description : Free disk space on $1 in %
- type : agent ZABBIX
- key : vfs.fs.size[/partition,pfree] (change /partition to the mount point)
- infos type : Numérique (float)
- %
You can customize others fields...

2. create a trigger to make an alert...
- name : Low free disk space on {HOSTNAME} volume /partition
- expression : {the_name_of_the_host:vfs.fs.size[/partition,pfree].last(0)}<20
Customize the reste of the options (dependencies etc)...

Now, you have an alert if the free space on /partition is less than 20% (so if the partition is 80% full).

Is it ok for you ?

[Calimero]

3. Create an action (we use a single generic Action for all triggers here) if you wan't zabbix_server to act when trigger is ON: send notifications, run commands ...

[Kai-Kai]

He just asked to create an alert... ^^ that's why I haven't mentionned actions creation, but you're right, it's possible to define automated actions such as mail or remote command...

[MrKen]

Now, you have an alert ...

No you don't! Now you have a Trigger.

Calimero is correct. If you want an alert, you must create an action based on the trigger.

MrKen

[sbarnett]

Try this also

http://www.zabbix.com/forum/showthread.php?p=46149#post46149

[Kai-Kai]

No you don't! Now you have a Trigger.
Calimero is correct. If you want an alert, you must create an action based on the trigger.

It depends of what you call alert...

According to me : alert = displaying on the dashboard. A trigger is the test, the trigger can be on "problem" or on "ok". When the trigger is on "problem", it's displayed on the dashboard : it's an alert.
So, you have an alert...
Sending email is an action following the alert.

So, I don't agree with you, but It's a question of point of view.
But what is sure is that ulises should find what he was loocking for, in this thread.

[MrKen]

So, I don't agree with you, but It's a question of point of view.

And, I don't agree with you!

Cheers, have a good day.

[ulises]

thank you guys for all your replies... it help me alot to understand zabbix

however; I still cant get it to work

I added some items and triggers to an existing template but i got many false positives

the trigger i used was

{Template_test1:vfs.fs.size[/home,used]. last( 0 ) }>80

which should only generate the alert when /home has used 80% of the space right?

well, that did not work; I got many alerts from this trigger even though /home was using less than 50%

then, I changed the trigger to

{Template_test1:vfs.fs.size[/home,free]. last( 0 ) }<63

which should generate the template if /home has used over 37% right?

well, i got some OK alerts but not PROBLEM -- and i made sure 2 servers were using 40% of /home space

so i'm lost again

any help would be really appreciated

thx again

[MrKen]

If you want a trigger for %, you need to use 'pfree' (percentage free) and 'pused' (percentage used).

e.g {Template_test1:vfs.fs.size[/home,pused]. last( 0 ) }>80

MrKen

[Kai-Kai]

And, I don't agree with you!
Cheers, have a good day.

If we were always the same opinion, it would become boring.
Have a nice day too MrKen.

so i'm lost again

As MrKen said, you have to be carefull. There's a difference between "used" and "pused". The first one gives you the value in bytes (if I well remember - if you put B in the 5th field and custom multiplication by 1024). The second one gives you the values in percentage (pfree, pused).
If you see my example on the first page, I used pfree.

So in this case, you have to make an item using pfree, and then the associated trigger should work better.

[ulises]

oh ok thx guys; however, when i go to create a new ITEM it does not show the key i need to use (pfree nor puse)... anyway to get it again?