Understanding Sun Cluster HA for DHCP Fault Monitor

Use the information in this section to understand Sun Cluster HA for DHCP fault monitor. This section describes the Sun Cluster HA for DHCP fault monitor's probing algorithm or functionality, states the conditions, messages, and recovery actions associated with unsuccessful probing.

For conceptual information on fault monitors, see the Sun Cluster Concepts Guide.

Resource Properties

Sun Cluster HA for DHCP fault monitor uses the same resource properties as resource type SUNW.gds. Refer to the SUNW.gds(5) man page for a complete list of resource properties used.

Probing Algorithm and Functionality

• DHCP

  • Sleeps for Thorough_probe_interval

  • Checks that the in.dhcpd daemon is still running. If this fails then the probe will restart the DHCP resource.

  • Checks if PNM (Public Network Monitoring) or IPMP (IP Multi Pathing) has changed the active interface for the network that DHCP is using. If this fails then the probe will restart the DHCP resource.