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Monitoring MarkLogic

DZone's Guide to

Monitoring MarkLogic

· Database Zone
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Whether you work in SQL Server Management Studio or Visual Studio, Redgate tools integrate with your existing infrastructure, enabling you to align DevOps for your applications with DevOps for your SQL Server databases. Discover true Database DevOps, brought to you in partnership with Redgate.

This is a quick how-to post for Opsview users who have a need to monitor MarkLogic.

The good news is that MarkLogic have released a Nagios plugin.

The reference manual is available from http://developer.marklogic.com/pubs/5.0/books/monitoring.pdf (see chapter 3 for Nagios specifics) and the plugin itself from http://developer.marklogic.com/download/binaries/nagios/MarkLogic-Nagios-Plugin-1.0-1.tar

Installing the plugin

You’ll only need to follow the first 3 steps of section 3.4 of the Monitoring MarkLogic Guide, in essence:

  1. Unzip the plugin tar
  2. Copy/move check_marklogic.pl to /usr/local/nagios/libexec
  3. chmod +x check_marklogic.pl

Setting up a service check

Once the plugin has been installed we can define service checks, Figure 1 shows two simple examples (using a clean install of MarkLogic plus the Hadoop Connector – maybe a topic for another blog post?).

Figure 1 – Simple MarkLogic check definitions

You would normally want to set up finer-grained service checks with thresholds – consequently the plugin accepts additional arguments (but doesn’t support the de facto help argument) to specify keys (-k), warning (-w) and critical (-c) thresholds. Note that the thresholds can use an operator (-op) argument. These arguments are fully detailed in section 3.5.2.3 of the Monitoring MarkLogic Guide.

Checks in action

Figure 2 shows the host-level view of the service checks, with the detail of the performance data behind them shown in Figures 3 and 4.

Figure 2 – MarkLogic service check summaries

Figure 3 – Document count service check detailed results

Figure 4 – Status service check detailed results

There you go, quick and easy basic monitoring of MarkLogic.

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