Chet Luther wrote:
On 5/4/07, Basil Shubin <[EMAIL PROTECTED]> wrote:
Chet Luther wrote:
> On 5/3/07, Basil Shubin <[EMAIL PROTECTED]> wrote:
>>
>> Currently I am using SNMP to collect data from my servers. As I
>> understand SNMP don't count %5 of disk usage spaces? To solve this
I've
>> tried to add this string to usedBlocks datapoint - RPN: *,.05
>> But this won't help, I got 'unknown' message in used capacities
fields.
>
> I think you'd want to use ".05,*" instead. You can find some good
> documentation on RPN and how it is used by RRDTool at:
> http://oss.oetiker.ch/rrdtool/doc/rrdgraph_rpn.en.html
With ".05,*" RPN, zenoss tell me that I have used 4% of disk space
instead of 88%.
Does bellow entry in FAQ incorrect?
http://community.zenoss.com/faq#Whydoestheavailablespaceonafilesystemnotequalwhatisshownbydf
Basil,
That entry in the FAQ is partially incorrect. Linux does report only
95% of a file system's total blocks through SNMP because it is saving
5% for the super user. It is wrong about how to compensate for this.
I'd recommend that you don't try compensating for this 5% skew. Linux
does this for a reason. When trying to fix full file system issues,
having some wiggle room for root can be invaluable.
Or you could set the userBlocks RPN to ".95,*" This still wouldn't be
completely accurate until the utilization reached 100%. The lower the
utilization, the less accurate it would be. I don't think this is a
very good idea.
Thanks for explanations.
BTW, zenoss is a great thing, I'm hooked with it ;-)
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