devmon-support

[Devmon] memory threshold

[Koshikawa Y. <h0...@gm...>]

Hi all,

I just started to monitor memory threshold for Cisco switches, but I can't.
I set small threshold value, but always green.

example:
Free memory:       2255724 bytes (51%)
Used memory:       2131592 bytes (49%)
-------------     ----------------
Total memory:      4387316.00 bytes (100%)


/path_to_devmon/templates/cisco-*/memory/thresholds
mem_used_per        : yellow        : 20    : Memory load is high
mem_used_per        : red           : 30    : Memory load is very high


cpu threshold, if_load threshold, etc. are OK.

Any advice?

version
devmon-templates-20080206
devmon-0.3.1-bata1
xymon 4.2.3
CentOS 5.2


--
Koshikawa Yasunori
h0...@gm...

Re: [Devmon] memory threshold

[Thomas K. <tk...@we...>]

Hi,

On Wed, May 06, 2009 at 07:22:41PM +0900, Koshikawa Yasunori wrote:
> I just started to monitor memory threshold for Cisco switches, but I can't.
> I set small threshold value, but always green.
> 
> example:
> Free memory:       2255724 bytes (51%)
> Used memory:       2131592 bytes (49%)
> -------------     ----------------
> Total memory:      4387316.00 bytes (100%)
> 
> 
> /path_to_devmon/templates/cisco-*/memory/thresholds
> mem_used_per        : yellow        : 20    : Memory load is high
> mem_used_per        : red           : 30    : Memory load is very high

it's an error in the templates. I submitted a bug report. However it
doesn't seem to be patched, yet.

You need to specify messages like this:

{mem_used_per.errors}
Free memory:       {mem_free} bytes ({mem_free_per}%)
Used memory:       {mem_used} bytes ({mem_used_per}%) {mem_used_per.color}
-------------     ----------------
Total memory:      {mem_total} bytes (100%)

Alarm threshold:  yellow={mem_used_per.thresh:yellow}%, red={mem_used_per.thresh:red}%
<!-- DEVMON to RRD Physical {mem_used_per}%
-->


Viele Grüße
Thomas
-- 
Thomas Kähn                        NetCologne
Network Engineering & Design       Gesellschaft für Telekommunikation mbH
                                   Grüner Weg 100
Telefon: 0241/701333-18            52070 Aachen
Fax: 0221/2222-78718
                             Handelsregister: HRB 25580, Amtsgericht Köln
               Geschäftsführer: Werner Hanf, Dipl.-Ing. Karl-Heinz Zankel

Re: [Devmon] memory threshold

[Koshikawa Y. <h0...@gm...>]

Hi Thomas,

I specified messages file, so it became good.
thank you.

devmon is useful.  let's patch.
if_err/if_dsc,  I dont use...


> {mem_used_per.errors}
> Free memory:       {mem_free} bytes ({mem_free_per}%)
> Used memory:       {mem_used} bytes ({mem_used_per}%) {mem_used_per.color}
> -------------     ----------------
> Total memory:      {mem_total} bytes (100%)
>
> Alarm threshold:  yellow={mem_used_per.thresh:yellow}%, red={mem_used_per.thresh:red}%
> <!-- DEVMON to RRD Physical {mem_used_per}%
> -->

--
Koshikawa Yasunori
h0...@gm...

Re: [Devmon] memory threshold

[Thomas K. <tk...@we...>]

Hi,

On Wed, May 06, 2009 at 01:53:45PM +0200, Thomas Kähn wrote:
> On Wed, May 06, 2009 at 07:22:41PM +0900, Koshikawa Yasunori wrote:
> > I just started to monitor memory threshold for Cisco switches, but I can't.
> > I set small threshold value, but always green.
> > 
> > example:
> > Free memory:       2255724 bytes (51%)
> > Used memory:       2131592 bytes (49%)
> > -------------     ----------------
> > Total memory:      4387316.00 bytes (100%)
> > 
> > 
> > /path_to_devmon/templates/cisco-*/memory/thresholds
> > mem_used_per        : yellow        : 20    : Memory load is high
> > mem_used_per        : red           : 30    : Memory load is very high
> 
> it's an error in the templates. I submitted a bug report. However it
> doesn't seem to be patched, yet.

by the way - the if_err/if_dsc test was also buggy. The error percentage
wasn't calculated correctly and always too low.

Viele Grüße
Thomas
-- 
Thomas Kähn                        NetCologne
Network Engineering & Design       Gesellschaft für Telekommunikation mbH
                                   Grüner Weg 100
Telefon: 0241/701333-18            52070 Aachen
Fax: 0221/2222-78718
                             Handelsregister: HRB 25580, Amtsgericht Köln
               Geschäftsführer: Werner Hanf, Dipl.-Ing. Karl-Heinz Zankel

Re: [Devmon] memory threshold

[Buchan M. <bg...@st...>]

On Wednesday 06 May 2009 13:53:45 Thomas Kähn wrote:
> Hi,
>
> On Wed, May 06, 2009 at 07:22:41PM +0900, Koshikawa Yasunori wrote:
> > I just started to monitor memory threshold for Cisco switches, but I
> > can't. I set small threshold value, but always green.
> >
> > example:
> > Free memory:       2255724 bytes (51%)
> > Used memory:       2131592 bytes (49%)
> > -------------     ----------------
> > Total memory:      4387316.00 bytes (100%)
> >
> >
> > /path_to_devmon/templates/cisco-*/memory/thresholds
> > mem_used_per        : yellow        : 20    : Memory load is high
> > mem_used_per        : red           : 30    : Memory load is very high

You don't need to adjust thresholds here, I would recommend adjusting the 
thresholds in the bb-hosts file, per-device, rather than adjusting the template 
itself.

> it's an error in the templates. I submitted a bug report. However it
> doesn't seem to be patched, yet.

I've fixed this in subversion now (rev 135).

Regards,
Buchan

Re: [Devmon] memory threshold

[Thomas K. <tk...@we...>]

Hi Buchan,

On Thu, May 07, 2009 at 10:12:00AM +0200, Buchan Milne wrote:
> On Wednesday 06 May 2009 13:53:45 Thomas Kähn wrote:
> > On Wed, May 06, 2009 at 07:22:41PM +0900, Koshikawa Yasunori wrote:
> > > /path_to_devmon/templates/cisco-*/memory/thresholds
> > > mem_used_per        : yellow        : 20    : Memory load is high
> > > mem_used_per        : red           : 30    : Memory load is very high
> 
> You don't need to adjust thresholds here, I would recommend adjusting the 
> thresholds in the bb-hosts file, per-device, rather than adjusting the template 
> itself.
> 
> > it's an error in the templates. I submitted a bug report. However it
> > doesn't seem to be patched, yet.
> 
> I've fixed this in subversion now (rev 135).

thank you. Did you also take a look at the if_err/if_dsc percentage
calculation?

Viele Grüße
Thomas
-- 
Thomas Kähn                        NetCologne
Network Engineering & Design       Gesellschaft für Telekommunikation mbH
                                   Grüner Weg 100
Telefon: 0241/701333-18            52070 Aachen
Fax: 0221/2222-78718
                             Handelsregister: HRB 25580, Amtsgericht Köln
               Geschäftsführer: Werner Hanf, Dipl.-Ing. Karl-Heinz Zankel

Re: [Devmon] memory threshold

[Buchan M. <bg...@st...>]

On Wednesday 06 May 2009 13:57:06 Thomas Kähn wrote:
> Hi,
>
> On Wed, May 06, 2009 at 01:53:45PM +0200, Thomas Kähn wrote:
> > On Wed, May 06, 2009 at 07:22:41PM +0900, Koshikawa Yasunori wrote:
> > > I just started to monitor memory threshold for Cisco switches, but I
> > > can't. I set small threshold value, but always green.
> > >
> > > example:
> > > Free memory:       2255724 bytes (51%)
> > > Used memory:       2131592 bytes (49%)
> > > -------------     ----------------
> > > Total memory:      4387316.00 bytes (100%)
> > >
> > >
> > > /path_to_devmon/templates/cisco-*/memory/thresholds
> > > mem_used_per        : yellow        : 20    : Memory load is high
> > > mem_used_per        : red           : 30    : Memory load is very high
> >
> > it's an error in the templates. I submitted a bug report. However it
> > doesn't seem to be patched, yet.
>
> by the way - the if_err/if_dsc test was also buggy.

It does what it says it does ("Load percentages are based on error/bit 
ratio."). 

> The error percentage
> wasn't calculated correctly and always too low.

Maybe per-packet would be more appropriate.

However, since you filed the bug anonymously ...

I am taking a look at this issue, for if_dsc and if_err.

However, I don't like the current layout where we have the same content in 
many different templates, but with some very small differences for some 
templates.

For example, should I now change 87 tests to use HC counters instead? I would 
prefer to add template inheritance, and have *two* IFMIB templates, one for 
non-HC, and one for HC counters (well, maybe 4, two for IFMIB, two for Cisco 
IFMIB).

Regards,
Buchan

Re: [Devmon] memory threshold

[Thomas K. <tk...@we...>]

Hi Buchan,

On Thu, May 07, 2009 at 10:47:46AM +0200, Buchan Milne wrote:
> Maybe per-packet would be more appropriate.

> However, since you filed the bug anonymously ...
> 
> I am taking a look at this issue, for if_dsc and if_err.
> 
> However, I don't like the current layout where we have the same content in 
> many different templates, but with some very small differences for some 
> templates.
> 
> For example, should I now change 87 tests to use HC counters instead? I would 
> prefer to add template inheritance, and have *two* IFMIB templates, one for 
> non-HC, and one for HC counters (well, maybe 4, two for IFMIB, two for Cisco 
> IFMIB).

this sound very good. This way exceptions could be defined easily.
Let's say you have one switch where you don't want to monitor interfaces
but only cpu, temperature, etc..

Currently I use tests() or model() in bb-hosts. With you suggestion
it would be possible to create a template inheriting only the required
tests.

Best regards
Thomas
-- 
Thomas Kähn                        NetCologne
Network Engineering & Design       Gesellschaft für Telekommunikation mbH
                                   Grüner Weg 100
Telefon: 0221/2222-8718            52070 Aachen
Fax: 0221/2222-78718
                             Handelsregister: HRB 25580, Amtsgericht Köln
               Geschäftsführer: Werner Hanf, Dipl.-Ing. Karl-Heinz Zankel