[ale] SNMP oid for file descriptors

[Alex Carver]

You create your own OID table entry.  Use the extend or pass-through
capability of snmpd and a shell script to generate an SNMP table or tree
output and then obtain it starting with the base tree

NET-SNMP-EXTEND-MIB::nsExtensions (.1.3.6.1.4.1.8072.1.3)



On 2018-08-07 07:00, Todor Fassl via Ale wrote:
> Well, I am not too worried about being able to calculate it. What I
> cannot figure out is how to get to the numbers remotely.
> 
> 
> On 08/06/2018 01:21 PM, Jerald Sheets wrote:
>> Why not pull the number of file handles you have: "sysctl fs.file-nr"
>> and compare it to current open file handles “lost |wc -l” and do a
>> multi-graph for the metrics.  Then, also subtract the two and alert
>> when you get below whatever threshold you want?
>>
>> I think you should be able to knock that out in BASH or Perl.
>>
>> —j
>>
>>
>>
>>> On Aug 6, 2018, at 1:49 PM, Todor Fassl via Ale <ale at ale.org> wrote:
>>>
>>> Ultimately, what I want to do is to configure nagios to alert me when
>>> a server is getting low on file handles. There are a couple of
>>> scripts on the nagios web site but they look kind of hokey.
>>>
>>> I think all I should have to do is cut/pasete the right SNMP object
>>> identifier into the nagios snmp plugin. But how to find that oid?
>>>
>>>
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>>
>