Disk Threshold Event not being generated on HP SIM

[Dan Stewardson]

I am running HP SIM 5.2 with SP2 on a Windows server (orasim01).

One of my monitored servers (netsaint6) is a Red Hat Linux server (ES release 4 Update 6).

As an experiment, I have configured the storage agent on the Linux server to generate a critical alert whenever the size of the /tmp filesystem exceeds 7%. The current size is 2% full.

As far as I can see my SNMP configuration is set up correctly. For example, whenever I restart the snmp service on my Linux server I can see a "Cold Start" event is automatically created on my HP SIM server (implying that (a) my Linux server is able to send SNMP traps to the HP SIM and (b) the HP SIM is able to receive them). Similarly, when I go into System Management Home Page for netsaint6 --> Settings --> SNMP Configuration and click the "Send Trap" button, the test trap event appears okay on the HP SIM.

But here is my problem...

If I force the /tmp filesystem to exceed 7% (by manually copying files into it), the "Percent Used" bar (on the File System Space Used page) is correctly showing the 7% threshold has been breached (i.e. appears in red) and I also get a root mail generated on my Linux server (see attached).

However, the actual event is not being logged on the HP SIM (which suggests to me that the SNMP trap is not being sent?)

Incidentally, I have also set up an automatic event handling task to email me whenever the event category on the Linux server relates to "Proliant Threshold Events". Needless to say I am not getting any emails. But I guess I won't if the event isn't being generated in the first place!

Not sure if there is some other aspect of the configuration I have overlooked or if there is something else that should be running on my Linux server (that isn't!). Does anyone have any ideas what could be causing this problem/what I could check?

[Dan Stewardson]

Managed to figure out what the problem was myself.

Basically, my Linux server was sending a trap to the HP SIM but with a null (blank) community name! Hence, I guess the trap failed the HP SIM authentication tests (it is expecting a "public" community) and was simply discarded.

The reason behind this lay in my Linux SNMP config file (/etc/snmp/snmpd.conf) where I had the following declarations defined:

trapsink orasim01
trapcommunity public

I figure the order of my declarations meant that the snmp compiler didn't know what the community was at the time of compiling the trapsink line...and so defaulted to null! So, I simply reversed them...

trapcommunity public
trapsink orasim01

...and that fixed the problem!

Alternatively, I guess I could of just declared it like this...

trapsink orasim01 public

Either way, events are now being generated on my HP SIM and I am receiving the email alerts.