Getting Started with Opsview Service Checks

Getting Started with Opsview Service Checks

Wednesday, 26 September 2012 © Opsview Ltd. Commercial in Confidence 2

About
• This blog post will get you started with creating service checks on your
hosts in Opsview
• To obtain a copy of Opsview visit our website and download Opsview Core
(free) or Opsview Pro (30 day trial).

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Wednesday, 26 September 2012 © Opsview Ltd. Commercial in Confidence

Configuration
• To register a new client into Opsview, you need to fulfil the opsview-agent
prerequisites outlined below:

Monitoring Agents
• Opsview supports the use of monitoring agents to gather data from
remote devices. The most common types of monitoring agents used with
Opsview are SNMP (Simple Network Management Protocol) and NRPE
(Nagios Remote Plugin Executor).

Wednesday, 26 September 4
© Opsview Ltd. Commercial in Confidence
2012

Configuration
Generic Agents

SNMP
• SNMP agents are provided with all managed network devices such as
switches, routers and firewalls. SNMP polling is the standard method for
gathering data, monitoring plugins exist for all commonly used devices.
• SNMP may also be used for server monitoring. Net-SNMP is a very capable
agent for Unix / Linux system. Successful monitoring of Microsoft
Windows servers usually requires purchase of a third party SNMP agent as
the standard Microsoft agent is very limited.
• Opsview is capable of processing SNMP traps sent by agents to the
monitoring server

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Configuration
NRPE
• NRPE provides two components:

NRPE plugin
• This is installed on the monitoring server and queries remote NRPE agents.
• You should always use the check_nrpe binary provided by Opsview as this
increases the amount of data that can be returned from a remote NRPE
agent from 1K to 16K.

• See this link for information about the extended output.

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Configuration
NRPE daemon
• NRPE is essentially a broker for running monitoring plugins on remote
hosts, it performs the following tasks:
• Accepts requests from NRPE plugin
• Executes requested monitoring plugin installed on host
• Responds with data supplied by monitoring plugin
• SSL is used by default to encrypt data.
• Although you can use any implementation of NRPE, it is limited by 1K of
returned data. If you use the Opsview Agents, the NRPE daemon will
return 16K worth of data.

• See this link for information about the extended output.

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Configuration
NSClient++
• NCClient++ (NSCP) is a simple but powerful monitoring agent for Microsoft
Windows platforms.
• Note: Only 1K of data is returned by NSClient++.

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Configuration
Opsview Agents
• We provide an Opsview monitoring agent for some operating systems.
Only the agent package should be installed rather than all of the Opsview
packages.

Linux/Unix Opsview Agent
• The Unix/Linux agent is based upon NRPE. Agents for Debian and Ubuntu
are available in our apt repositories, while other agents are available from
the download site.

Microsoft Agent
• The Microsoft Windows agent is based upon NSClient++ and is available
from the download site.

Once done you will need to use the GUI to register the host client in Opsview.
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Configuration
• Click SETTINGS > BASIC > HOSTS

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Configuration
• Click the '+' icon

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Configuration
• Fill in the required boxes, pay attention to the 'host templates' box at the
bottom. This is where you can configure in pre-set service check
templates.

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Configuration
• Select NOTIFICATIONS at the top of your tab, selecting the required
options. Navigate the remaining tabs if you wish to make adjustments
here.

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Configuration
• Click 'submit changes'.
• Now we need to apply these changes - CONFIGURATION > APPLY
CHANGES

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Configuration
• Click 'RELOAD CONFIGURATION'

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About Opsview
Opsview delivers a single unified view of the health of all your
distributed physical, virtual and hybrid cloud systems.

We give DevOps staff all the tools they need to get their jobs
done faster, easier and for less.

• Opsview Enterprise offers large enterprises (+100 devices) and MSPs a certified,
professionally supported system with enhanced functionality such as dynamic
dashboards and reports

• SMEs looking for feature-rich dashboards to monitor the performance of their on-
premise, virtualized or cloud apps choose Opsview Pro

• Opsview Core is our free, open source monitoring tool - you can test and
customize it how you want

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Getting Started with Opsview Service Checks

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