Sightline Highlights – Nov. 17, 2014

JBoss tmp directory maintenance

Are you running EDM? As part of the normal operation of the JBoss container that Sightline uses, it creates temporary files in the jboss-as-7.1.1.Final/standalone/tmp folder. With each restart of EDM (and thus the JBoss container) the temp files are created anew, in new folders. Over time, this can become a large consumption of space, many gigabytes. During a maintenance window, we recommend stopping the JBoss service and deleting all folders under the jboss-as-7.1.1.Final/standalone/tmp folder. The files needed by JBoss will be re-created on the next JBoss start. We recommend doing this periodically to keep the space used by JBoss to a minimum.

Using the VM Count metric from vCenter

1201_aWe’re often asked about the metrics we collect, whether we collect certain information, or how we would represent a specific situation. An interesting metric collected from vCenter is VM Count. Do you know exactly how many VMs you have? Do you know which ESX host they reside on? Look at VM Count. Consider the two charts below. On the left, the sum of all VMs in an environment. As you can see, it’s fairly consistent at about 52 for the last six weeks.

But that’s not the whole story. At the beginning of September, there were three ESX instances in the environment, but a fourth was added on September 14. The total VM Count stayed the same, but some VMs were moved from Angkor (the metric in blue) to Avaris (the metric in green). Using the information collected from Sightline, you can show both the high-level view and the details, too.

Is there a metric that you’re interested in? Let us know, and we’ll investigate!

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