Well, Zenoss is really SNMP orientated, at least in my experience. I
don't use plugins as the main promise of Zenoss is agentless monitoring.
I only bring this up because if you use ping only status monitoring,
Zenoss does different things than if you use SNMP, and I'm guessing
something might be different if you use SSH.
As to the IP services, yes, you want to lock the service if you don't
want it removed at a remodel.
I've had very reliable IP service monitoring of Port 80 on several
servers, Linux and Windows. Zenoss 2.1.2 anyway, always notices they are
down. I actually didn't do any setup for this as Port 80 was OOTB monitored.
Note that I'm talking about getting an e-mail. There have been some
posts about UI bugs that are hopefully being fixed. You may have to look
on the device status page.
--
James Pulver
Information Technology Area Supervisor
LEPP Computer Group
Cornell University
chojin wrote:
I have read the administration manual, browsed this forum, the faqs, the wiki,
google, .. but I don't seem to find any good source of how things in zenoss
actually work. I find how to use the user-interface and where to find all
properties, but not the explanations about the properties or how things
actually work, only the simple things.
I am test-driving zenoss (the VM appliance) since it looks very promissing, but
I can't get it to work in a way that we would be able to depend on it:
For example: I added a (SLES) Linux server to the /Server/Cmd class and configured the SSH access and ZenPlugin.rpm (There is no SNMP running on the server.). And did a few Device modelings.
During the second modeling it finds a http service being UP and a smtp service
being DOWN (since there is absolutly no smtp service running on the server).
Why is this SMTP service found while it is not there?
No problem, I think, I tell Zenoss to not monitor the smtp service and the
ipservice dissapears.
I also want to monitor the ArcServe Agent running on the server, so I add a new
service to the system. Not finding any decent documentation about all the
properties I have to fill in (what are those service keys?) , using the mysql
ipservice as an example:
Name: BABagent
Monitor: True
Port: 6051
Description: Brightstor ArcServe Backup Agent
Service Keys: BABagent, tcp_06051, udp_06051
Next I wanted to add that service to my server, and found out that there is no
posibility to add services manualy due to a bug in the UI. After some
forum-browsing I found a patch and then I was able to add the service as a tcp
ipservice.
It was displayed as being UP. Everything succesfull I thought.
After a while I noticed that the service BABagent was gone again. Seems it gets
removed during automatic remodeling. Which looks to me as unwanted behaviour? I
read on this forum that every six hours a remoddeling happens and services not
being up (and not locked) at that moment get removed ??!! In other words, if an
important service fails right before such a remodel, it gets removed and there
is no critical error triggered???
Anyway, I re-added it a few times and it gets removed every time during a
modeling. Then I read on the forums about enabling the port-scan collector
plugin, so I did that, and now indeed the BABagent is automaticaly found and
added to the device. Not as a tcp but as a udp ipservice. Again I thought, no
problem..as long as it gets monitored..
Out of curiousity I removed the port-scan plugin again en did another
remodeling. This time the BABagent ipservice is kept.. So I was happy..
Then I shut down the BABagent on the server itself to check the response time of zenoss..
One hour later.. BABagent is still up and running according to zenoss. Netstat on the server shows me that port 6051 is not used..
Why doesn't zenoss detect the service being down?
I did the same for the http service and within a few second zenoss detects
it..why not with the BABagent ipservice?
Is zenoss dependable? I really like its approach, it's features and promisses,
and would really like to use it, but I need a stable and dependable system to
convince my boss.
Please tell me that I did things wrong, that zenoss did the right things.
If more (debugging) information is needed to be able to give me an explenation,
please ask me, I will try to provide it.
-------------------- m2f --------------------
Read this topic online here:
http://community.zenoss.com/forums/viewtopic.php?p=24705#24705
-------------------- m2f --------------------
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