VMware ESX SNMP (Commercial)

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Commercial

This ZenPack is developed and supported by Zenoss Inc. Commercial ZenPacks are available to Zenoss commercial customers only. Contact Zenoss to request more information regarding this or any other ZenPacks. Click here to view all available Zenoss Commercial ZenPacks.

Organization

Zenoss, Inc.

Name

ZenPacks.zenoss.VMwareESXMonitor

VMware ESX SNMP (Commercial) ZenPack

Monitoring for VMware ESX hosts. Uses SNMP.

Support

This ZenPack is included with commercial versions of Zenoss and enterprise support for this ZenPack is provided to Zenoss customers with an active subscription.

Background

The ZenPacks.zenoss.VMwareESXMonitor ZenPack monitors VMware ESX hosts and their guests, using SNMP.

Note: This ZenPack is deprecated; see ZenPacks.zenoss.vSphere.

With this ZenPack, the zenmodeler daemon can discover guests running on ESX hosts, and provide screens and templates for collecting and displaying resources allocated to guests.

Prerequisites

Prerequisite	Restriction
Product	Zenoss platform 4.x
Required ZenPacks	ZenPacks.zenoss.VMwareESXMonitor, ZenPacks.zenoss.ZenossVirtualHostMonitor

Monitoring VMware ESX Servers

To monitor VMware ESX servers:

Make sure you have SNMP connectivity to your ESX 3 servers.
Create your ESX services using the /Servers/Virtual Hosts/ESX device class. Note: If you have already modeled these servers, then remove and recreate them under the ESX device class. Do not move them.
Select the Guest menu and ensure that the guest hosts were found when the devices were added.
Using the VMware vSphere client, add Zenoss platform to the list of destinations for SNMP traps. (See Administration > vCenterServerSettings > SNMP.) For information about configuring traps for a stand-alone ESX 3 server, see "About SNMP and VMware Infrastructure" at: http://www.vmware.com/pdf/vi3_35/esx_3/r35u2/vi3_35_25_u2_admin_guide.pdf

Notes:

There is a link to the VMware Web interface on each ESX server Status page.
If the name of the Guest under ESX is the same as the name of a device being monitored directly by Zenoss platform, a link is provided to take you directly to that device from the Guest list.

Enabling SNMP Subagents

ESX servers (Version 4.x and higher) contain an SNMP subagent from VMware. This subagent provides all information related to VMware (such as virtual machines and their status). By default, the subagent is disabled.

The VMware SNMP subagent does not provide information about the ESX server itself (such as processes, memory, CPU, or performance data).

Note: The VMware SNMP subagent cannot share port 161. If any other agent is using that port (usually the NET-SNMP agent), the subagent cannot start.

To fully monitor the ESX machine on your Zenoss platform server, you must enable both SNMP agents (NET-SNMP and the VMware subagent). Follow these steps to enable both agents using an SNMP proxy:

Stop the snmpd service through the service console (via SSH) on the ESX host:
```
service snmpd stop
```
Add a proxy line to the /etc/snmp/snmpd.conf file:
```
proxy -v 1 -c public udp:127.0.0.1:171 .1.3.6.1.4.1.6876
```
This line will use the snmpd service to access the VMware MIB on the subagent running at port 171.

Using the VMware vSphere CLI (command line interface), bind the VMware SNMP agent to port 171, and then enable the subagent by using these commands:

vicfg-snmp.pl --server <hostname|IP address> --username  --password  -c \
 public --port 171
vicfg-snmp.pl --server <hostname|IP address> --username  --password  -E

Via SSH, go back to the ESX host. Restart the mgmt-vmware service (hostd) and the snmp service. On the ESX host from the service, enter:
```
service mgmt-vmware restart
service snmpd restart
```

Daemons

Type	Name
Modeler	zenmodeler
Performance Collector	zenperfsnmp