Microsoft Active/Passive Cluster resource monitoring where agents are also required individually on the Cluster nodes.

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)

Issue/Introduction

We have a Microsoft cluster of two nodes.

We want to set up an agent on a cluster resource. This resource has its own IP address and DNS name (distinct from the two hosts). 

In this case, we want: 

• That the agents present on each node of the Cluster, listen only on the fixed and respective IP addresses to each of the nodes.
• That a third agent, installed on the cluster resource (disk resource), listen on the ip address of the resource.

Environment

• Release : 9.0.2
• Windows 2012R - SQL 2016
• Agent 7.97
• Hub 7.97

Resolution

We used the keys:

• robotip = {IP disk resource} 
• robotip_alias = {IP disk resource}
• local_ip_validation = no 
• strict_ip_binding = no
• validate_ip_suggestion = no

With this configuration, the probes listen well on the desired IP, and the "proxy_mode" of the agent works.

Additional Information

This configuration allows you to work around limitations of the cluster probe:

• More than 2 nodes can be supported with this configuration (4 hosts in our target + 2 hosts DR) .
• Cluster resources can have an "origin" different, and each resources can have there own "origin".
• The agent on the Cluster Resource allows to have a total compatibility with the MCS profiles.