All enterprises depend on reliable servers, network devices and business applications. Any downtime hits your bottom line. To ensure maximum IT performance across your business, you have to identify and resolve problems before they impact the user experience or security of your data.
In a standard Nagios plus database implementation, you use NDOutils to store information in a database. While we think NDOutils is fantastic, there are some major limitations with it as you monitor more hosts. With Opsview, we want to scale. We’ve already done lots of work with NDOutils, including adding view-like helper tables, updating the database asynchronously, improved indices and speeding up the time to load the configuration at a Nagios reload. Now we want to share an amazing improvement we’ve discovered.
In the light of the recent events at a BT network centre in Paddington (London, UK), where a series of compound failures caused a massive outage with huge knock-on effects, I’m sure many businesses are taking another look at their own (and their suppliers) availability with a view to beefing up business continuity.
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We regularly get customer requests to write snmp checks for their devices but a problem we have is we don’t necessarily get access to those devices – in the past we have used output from an snmpwalk command and written the check scripts as best we can, and then shipped the new check to the customer for testing.
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The great thing about open source software is the unexpected contributions you may suddenly receive. Jonathan Kamens of Advent Software sent a patch into the nagios-devel mailing list about a speed up to the status CGIs. He identified, using gprof, that status.cgi was taking the most time in the sorting routine of downtimes and comments.
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This Monday morning, we got lots of calls from our users where Opsview slave systems running Nagios were raising freshness alerts because checks weren’t being run within their specified period.
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At the heart of Opsview is the Nagios monitoring engine. One of the policies we have with Opsview is to keep the number of changes of our dependent software as low as possible. We do this by keeping track of all the patches we apply and pushing these back upstream (though recently we haven’t had as much time as we’d like…).
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We have a long history of working with Nagios. Most of our technical staff has used Nagios for many years – both here at Opsera and at previous employers. Our Opsview product is based on Nagios because we believe it is the best open source monitoring engine available.

Opsview is a leading Open Source application and network monitoring suite. Labs is where our engineers discuss new projects, new approaches and new frameworks they’re using.



Opsview and the Open Core Model
Opsview ® is the award winning Open Source application and infrastructure monitoring software from Opsera. It provides comprehensive system management capabilities used to monitor the health of today’s most complex data centres.
Opsera have recently adopted an Open Core business model for their Opsview software. This article explains why we decided to take this direction and the benefits to Opsview customers.
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