Sun Cluster 3.1 Data Services Developer's Guide

Probe Overview

The probe runs in an infinite loop. It uses nslookup(1M) to verify that the proper DNS resource is running. If DNS is running, the probe sleeps for a prescribed interval (set by the Thorough_probe_interval system-defined property) and then checks again. If DNS is not running, this program attempts to restart it locally, or depending on the number of restart attempts, requests that the RGM relocate the data service to a different node.