Hi Hubbard,

    Thanks for your reply.  I have checked the conn, it  only stopped 10m(13:45~13:55).  I  want to know if the hobbit can check the server’s CPU and Memory when they Zero. If I can recevie some email from hobbit. So I first know it. Can you give me some advice for hobbit setting? I am learning hobbit:-)

From: Hubbard, Greg L [mailto:greg.hubbard at eds.com] Sent: 2008年6月24日 21:26 To: hobbit at hswn.dk Subject: RE: [hobbit] curves went to zero but didn't have a report?

Looking at this graph, there is always some memory utilization and some CPU utilization (seen via load average). I think the real problem is that something went wrong with the agent on this machine, or it could no longer communicate with the Hobbit server during this time period. You should review the alert history for this node and then make sure that you configure alerts appropriately. I suspect that you will find that all of the agent-based tests went "purple" at about 1:30. The other thing to check is the "conn" column -- if the system was not reachable, then the purple alarms for the agent-based tests would have been suppressed in favor of the reachability alarm.

From: Andrew Chen [mailto:Andrew.Chen at ehealth-china.com] 
Sent: Tuesday, June 24, 2008 3:17 AM
To: hobbit at hswn.dk
Subject: [hobbit] curves went to zero but didn't have a report?

Let’s take a look at the CPU and Memory charts for this machine:

At around 01:00pm, the curves went to zero.

 

 

 

 

 

   Above, the cpu and memory used 0, but I didn’t recevie a RED Alert report and email. (if there is some mothed to check this problem).

Hobbit-client configured file

   UP 1h 22w

   LOAD 5.0 15.0

   DISK / 80 90

   DISK /boot 80 90

   DISK /var 80 90

 DISK /data 80 90

   MEMSWAP 40 60

   MEMACT 80 90

 MEMPHYS 101 101

This configuration only reported when the cpu and memory reach 5.0(cpu) and 80(memory), then they will send a alert report and email. But I can’t find about cpu and memory used 0, then send an alert report and email. Can you teach me how to do it? Thanks.

 

Thanks, Steve. Thinking further, another guess is that the node got rebooted (due to a crash or some other action) and the Hobbit client did not restart. There should have been purple alarms.

From: sholmes42 at gmail.com [mailto:sholmes42 at gmail.com] On Behalf Of Steve Holmes
Sent: Tuesday, June 24, 2008 10:04 AM
To: hobbit at hswn.dk
Subject: Re: [hobbit] curves went to zero but didn't have a report?


[bottom]


2008/6/24 Andrew Chen <Andrew.Chen at ehealth-china.com>:


	Hi Hubbard,

	        Thanks for your reply.  I have checked the conn, it  only stopped 10m(13:45~13:55).  I  want to know if the hobbit can check the server's CPU and Memory when they Zero. If I can recevie some email from hobbit. So I first know it. Can you give me some advice for hobbit setting? I am learning hobbit:-)

	

	From: Hubbard, Greg L [mailto:greg.hubbard at eds.com] 
	Sent: 2008年6月24日 21:26
	To: hobbit at hswn.dk
	Subject: RE: [hobbit] curves went to zero but didn't have a report?

	 

	Looking at this graph, there is always some memory utilization and some CPU utilization (seen via load average).  I think the real problem is that something went wrong with the agent on this machine, or it could no longer communicate with the Hobbit server during this time period. You should review the alert history for this node and then make sure that you configure alerts appropriately.  I suspect that you will find that all of the agent-based tests went "purple" at about 1:30.  The other thing to check is the "conn" column -- if the system was not reachable, then the purple alarms for the agent-based tests would have been suppressed in favor of the reachability alarm.

		 

		

I think the answer to your question is: not without some programming. I.e. you are looking for a parameter in hobbit-client.cfg similar to the PROCS config with which you can specify both a minimum and a maximum allowable number of processes, but in the memory case you want to be able to specify a minimum as well as a maximum on memory usage (ditto for cpu).  

To do this you would have to write your own script. Note, this says nothing about whether the usage *really* is dropping to zero or not. I think Greg is probably right about the agent. 

Steve
 

On Tuesday 24 June 2008 15:41:33 Andrew Chen wrote:

I want to know if the hobbit can check the server’s CPU and Memory when they Zero.

Well, in the example you provided, the CPU / memory did not go zero, there simply was no data sent at all (see e.g. your swap line, which was at zero, then stopped, then continued at zero), which is different from there being data with the values being 0.