Cacti & FreeBSD Jail CPU & RAM monitoring

[Chad Leigh -- Shire.Net LLC]

On Aug 14, 2006, at 10:28 AM, pete wright wrote:

> On 8/14/06, Philippe Lang <philippe.lang at attiksystem.ch> wrote:
>> Hi,
>>
>> I'd like to use Cacti for CPU and RAM usage monitoring on my  
>> FreeBSD Server.
>>
>> Is there a way to do monitoring for each jail independently? I  
>> guess the answer is "no" for CPU usage, but is there a way maybe  
>> to get the RAM usage of the processes of each jail?
>>
>
>
> using cacti's scripting ability you actually may be able to get some
> sort of usefull info.  for example, you can use "ps auxwl" to get some
> pretty detailed info on process which are in jails (third filed is
> %CPU, fourth %MEM).  it may take a little work to sort out which jail
> a process resides in - .  this method will only work from the master
> as well.  similar tricks can be used inside a jail as well.

Remember you can do things like

% jexec NUM /bin/ps

from the master to do a ps command inside jail NUM

you can get the jail number from the % jls     command inside the  
master.

Chad

---
Chad Leigh -- Shire.Net LLC
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chad at shire.net