Dec 5, 2008 2:37 PM
Hardware specs
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As with any performance related issue for any application, you must
I am working on a large install of Zenoss and am trying to figure out the ratio of hardware resources/number of devices. My current server is a beefy dual core 2.4 Ghz, 8gb ram and more then enough disk space that is constantly pegged with 1400 devices being monitored. To relieve some of the load we have set up remote collectors at all of our sites and this helped some, but I regularly see loads of 9 and 10 on the main server. Has any one figured out the correct requirements for how beefy a server needs to be before I turn on syslog?
As with any performance related issue for any application, you must
I am working on a large install of Zenoss and am trying to figure out the ratio of hardware resources/number of devices. My current server is a beefy dual core 2.4 Ghz, 8gb ram and more then enough disk space that is constantly pegged with 1400 devices being monitored. To relieve some of the load we have set up remote collectors at all of our sites and this helped some, but I regularly see loads of 9 and 10 on the main server. Has any one figured out the correct requirements for how beefy a server needs to be before I turn on syslog?
Of course Nathaniel gives you the well-reasoned approach, I'll give
you the half-cocked answer. 8 gigs of RAM sounds low. From the
thread "How big is your Zenoss (community) install?" (http://forums.zenoss.com/viewtopic.php?t=6230
) it looks like the largest install was around 1500 devices on a box
with 32 gigs of RAM.
Thanks,
Matt Ray
Zenoss Community Manager
community.zenoss.com
mray@zenoss.com
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i use a virtual machine.
i monitor 450 device via snmp and some script , 50 device ping only.
Next week i saw that my server was swapping and i've to increase
memory from 1.5 gb to 2 gb to stop it swapping.
i read in a post (i don't remember where) that zenoss collector
limit is set to 1000 - 1500 because with more device zenoss is not
capable of check all before another cicle)
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Team,
I was hoping to gather some updated information regarding Zenoss physical server specifications and use of virtual servers.
Hardware Specifications ->
- Is it advised to use physical servers for Zenoss?
- Should we install the Zenoss Network Management Server Zenoss application on one server and MySQL DB on another?
- Are specifications and sizing recommendations available?
- How well does Zenoss work on virtual servers (VMWare / ESX)?
- Is it recommended that virtual servers be installed with Zenoss in a production environment?
Distributed Data Collectors for Zenoss Core ->
- Is there a cost to use distributed data collector with Zenoss Core?
- Can distributed data collectors be installed on virtual servers?
- Are there specifications to consider when installing a data collector using a virtual (CPU, Memory, Disk, etc.)?
Thank you,
- Ken
My experience and opinion
Hardware Specifications ->
>
- Is it advised to use physical servers for Zenoss?
I use virtual one for managing more than 600 hosts
- Should we install the Zenoss Network Management Server Zenoss
application on one server and MySQL DB on another?
same server
- Are specifications and sizing recommendations available?
in my envirorment ibm quad core 1.39 ghz and 3 gb of ram
- How well does Zenoss work on virtual servers (VMWare / ESX)?
before I've installed zenoss on centos 32bit guest on vmware server and
works but I've some preformance issue (no vmware bare metal, windows 2003
server with installed vmware server)
this summer I've time to backup zenoss, format the server and install xen
server (bare metal) and I create a new centos 32 bit guest machine and
restore my installation....
it's a colplete different world.. same hardware... better performance
- Is it recommended that virtual servers be installed with Zenoss in a
production environment?
I use it in production because using core version I've no maintenance
contract with zenoss team so when I make update sometimes I can have some
issue, so I can revert back to my old virtual machine (loosing 10 minutes of
rrd's).
>
Distributed Data Collectors for Zenoss Core ->
>
- Is there a cost to use distributed data collector with Zenoss Core?
no, you've to pay to have global dashboard (distribuite data collectors only
grab performance info's and send info to zenoss core master server I
think -- never try).
- Can distributed data collectors be installed on virtual servers?
why not
- Are there specifications to consider when installing a data collector
using a virtual (CPU, Memory, Disk, etc.)?
>
Thank you,
- Ken
>
I'll respond in line with my comments.
jenkinskj wrote, On 9/24/2009 2:50 PM:
Team,
I was hoping to gather some updated information regarding Zenoss physical server specifications and use of virtual servers.
Hardware Specifications ->
- Is it advised to use physical servers for Zenoss?
I prefer physical servers for performance, but if you run your own Linux
install a decently performing VM should work. I/O is going to be the
limiting factor I should think with VMs, so if you're not running fast
local storage...
- Should we install the Zenoss Network Management Server Zenoss application on one server and MySQL DB on another?
It's much easier to set up with both on the same server. I haven't
actually seen any indications from the Community or Zenoss that there is
a reason to separate the servers.
- Are specifications and sizing recommendations available?
Not as such, but see:
docs/DOC-2445#WhatisthemaximumnumberofdevicesZenosscanmonitor
- How well does Zenoss work on virtual servers (VMWare / ESX)?
- Is it recommended that virtual servers be installed with Zenoss in a production environment?
I wouldn't use the provided appliance, and there isn't any
recommendation either way that I've seen. My personal preference is for
physical servers.
Distributed Data Collectors for Zenoss Core ->
- Is there a cost to use distributed data collector with Zenoss Core?
The answer is no, if you can hack it together to get it working, though
you do need to check some of the old forum threads to understand the pain.
If you want it to "just work", you have to purchase Enterprise.
- Can distributed data collectors be installed on virtual servers?
Sure.
- Are there specifications to consider when installing a data collector using a virtual (CPU, Memory, Disk, etc.)?
Disk I/O is what is probably the gotcha.
--
James Pulver
Information Technology Area Supervisor
LEPP Computer Group
Cornell University
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