Maintenance mode

Written by Ingmar Verheij on October 20th, 2010. Posted in Nagios / GroundWork, Operations Manager

Monitoring servers, services and connections is great. It enables pro-active management, notification and escalation and improves root cause analysis.

One big challenge is the number of notifications being sent and the relevance of those notifications. A well set-up environment sents notifications when problems raise or a negative trend is detected. Signals for the Administrator to get out of his lazy chair.
Most environments, however, sent more notifications then needed and are often irrelevant. This causes a negative effect, the mailbox fills up rapidly and the value of the message decrease.

An example of a not well-planned monitoring environment is a reboot schedule. Especially when terminal servers are periodically rebooted, or re-deployed, servers maybe be unreachable once in a while. The monitoring software assumes the server is in trouble and would cause an alert and sent notifications.