memcached Host Template and Graphs (ver 1.0)

danbeck · Joined: 20 Jun 2006 Posts: 30 Location: Huntsville, Alabama

Hi all,

For some time now I've been wanting to release some of the custom templates that I've created for various devices on our network. This will be the first release of several that I hope others will find useful.

ANNOUNCING:

The Cacti memcached template - Version 1.0

This template provides a host template and associated graphs for graphing the output of the memcached stats command on individual memcached installations.

Graphs are provided for Bytes Used with total capacity, Cache Hits and Misses per second, Current Connections, Items Cached, Inbound and Outbound Network Traffic (bits per second), and Requests per Second for both the get and set commands.

The latest version and installation instructions can be found at http://dealnews.com/developers/cacti/memcached.html.

SCREENSHOTS:

Comments, questions, suggestions and bugs are all welcome. Let me know what you think.

twelzy · Posted: Tue Jul 04, 2006 9:04 am Post subject:

Hi danbeck,

I'm considering install memcached to improve the overall Cacti system performance.
Does Cacti need to be modified in some way in order to use memcached?!

Thanks in advance!
(And sorry for my poor English...)

danbeck · Joined: 20 Jun 2006 Posts: 30 Location: Huntsville, Alabama

suse · Joined: 13 Nov 2005 Posts: 23

I installed it , but graph is empty
here is my poller log

jeffand · Joined: 24 May 2006 Posts: 1

Thanks for this plugin it's excellent. However I have a server that runs multiple memcache regions at different ports and I'd like to have a template that takes the port number in addition to the hostname as arguments so I can plot graphs for them too. Is this possible at all?

Thanks,
--jeff

stijink · Joined: 22 Jan 2007 Posts: 1

Hi,

i installed your plugin a couple of days ago. Works fine so far. But I have a some strange numbers on a couple of graph's. The maximum number is extraordinary high sometimes. Have you seen this kind of behaivour before, or is is a thing of our software ?

See attached file.

Greetz,
Stephan

TECK · Joined: 27 May 2007 Posts: 13

Excellent job.

I even built an RPM for it because I don't keep the scripts into:
/var/www/html/stats/scripts

Very happy with the new memcached stats.

Colosus · Joined: 16 May 2007 Posts: 13

I have this same problem. Has anyone found a fix or identified the cause?

Colosus · Joined: 16 May 2007 Posts: 13

Figured it out. I had to add the full path to python in the Data Input template. Everything works now. Thanks.

decals74 · Joined: 09 Jun 2007 Posts: 6

Works great right out the box. Thanks!

nohau · Joined: 19 Jun 2007 Posts: 1

I have multiple memcached services running on a single server on different ports . What would be the best method graph them individually ? Can this be done. I see where you can the -p flag but that is for just that one. Is there a way we enable a port function so people who have multiple instances of the daemon running can get stats from them all?

TECK · Joined: 27 May 2007 Posts: 13

nohau, this is very easy.
Simply create a new python_11212.py file and edit there the lines:

shock · Joined: 19 Jul 2007 Posts: 2

Hello,

while trying to run against memcached 1.1.11 I noticed that rusage_user and rusage_system both return a ":" instead of a suspected "."

Attached is a patch to fix this.

Regards

shock · Joined: 19 Jul 2007 Posts: 2

mdecandia · Joined: 25 Jul 2007 Posts: 1

Hi all,
I want to increase polling frequency for memcached server because I need more detailed memcached performance statistics: at least 1 request every minute.

Any idea?
Thanks,
Michele