Top I.T./Datacenter Monitoring Mistakes, Part 4 in a series.

LogicMonitor Opinion post

Monitoring System Sprawl
This is often a corollary to the first point, not relying on manual processes.  The number of monitoring systems you have in place should approach 1.  You do not want one system to monitor windows servers; another for linux, another for MySQL, another for storage.  Even if they are all capable of automatic updates, filtering and classifying, having multiple systems still virtually guarantees suboptimal datacenter performance.  What happens when the DBA changes his pager address, and the contact information is updated in the escalation methods of 2 systems, but not the other 2?  What happens when scheduled maintenance is specified in one system, but not another that is tracking another component of the systems undergoing maintenance?

You will end up with alerts that are not routed correctly, and alert overload.  You may also end up with a system that notifies people about issues they have no ability to acknowledge, leading to “Oh…I turned my pager off…”
A variant of this problem is when your DBA’s, sysadmins or others ‘automate’ things by writing cron jobs or stored procedures to check and alert on things.  The first part is great – the checking. The alerting, however, should happen through your monitoring system.  Just have the monitoring system run the script and check the output, or call the stored procedure,or read the web page. You do not want yet another place to adjust thresholds, acknowledge alerts, deal with escalations, and so on – all things which your sysadmin’s scripts are unlikely to deal with.

Steve Francis


Steve is the founder of LogicMonitor.

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