specifying hostinterface for JMX item programmatically

[michaill]

Hi,
I have two instances of Tomcat on a host that I want to monitor.
I created two JMX interfaces for that host that correspond to the two Tomcats. I applied two Tomcat templates, one for each instance.

Now, how can I specify that all items in a given template should connect to a host through a specific JMX interface? The only way I can see is by doing it item by item using web interface. The docs say I can only do this for host items. How can I do this in bulk for all items in a template?

Thanks
Mike

[coreychristian]

The only way I found you could do it was to create a different host for each JMX Interface you wanted. Even setting the Interfaces I couldn't apply the same items to an individual host (item key's were the same)

If someone has another answer would love to hear it though.

[michaill]

JMX item

Now I'm wondering how does a JMX item even choose which interface to use if there are more than one?

[coreychristian]

Now I'm wondering how does a JMX item even choose which interface to use if there are more than one?

When you create a JMX item, or apply a template, it chooses the one that has the default box checked. After the items are created, you can specify the interface in the item.

[michaill]

Database maybe?

Thanks for response.

Perhaps an item's hostinterface for a specific host can be changed directly in the database? I haven't looked into it yet, is that something you tried?

[coreychristian]

Thanks for response.

Perhaps an item's hostinterface for a specific host can be changed directly in the database? I haven't looked into it yet, is that something you tried?

We haven't tried that, though that would probably work as well. The main issue we ran into is we couldn't monitor the same item's on the same host.

Example

Interface 1/Java App 1
jmx["java.lang:type=Memory","HeapMemoryUsage.committed "]

Interface 2/Java App 2
jmx["java.lang:type=Memory","HeapMemoryUsage.committed "]


They are duplicate items for the host which zabbix doesn't support as the item key is the key field in the database.

So our work around as mentioned was just to create a separate host for the second JVM App.

Host1 = all base monitoring and JMX Monitoring for Interface 1
Host2 = JMX Monitoring for Interface 2

[Slash]

I have the same issue, and I advise you to completely separate the tomcats from the physical servers:

- create an host for the physical server and apply all monitoring template to it except tomcat/JVM
- create one host for each tomcat you have and apply monitoring template only for tomcat/JVM on each one

If you don't, you will have one tomcat linked to its physical servers and all other tomcats separated, it may not bother you at first, but it can be a really bad idea when you have a lot of tomcats/servers. It also permit you to create a group "tomcat" with all tomcats hosts.