Sentinel has been tested and certified to work in a high availability environment, and it supports disaster recovery architectures. NetIQ Consulting and NetIQ partners can help you implement Sentinel high availability and disaster recovery.
To enable the Sentinel servers for high availability, you need the following:
Redundant, clustered Sentinel nodes.
Access to shared data storage.
Virtual IP addresses that can be used to transparently shift from a failed node to another node.
Scripts to start, stop, and monitor the application based on policies defined in your cluster solutions. You can use cluster solutions such as Cluster Resource Agents or LSB init scripts on Linux Enterprise High Availability systems.
There are many packages in the market that enable high availability. Testing for Sentinel was performed with the SUSE Linux Enterprise High Availability (HA) Extension, shared storage RAID drives, and custom scripts. This architecture can be replicated across data centers to ensure availability of everything from the Sentinel server to the Collector Managers and Collectors.
High availability for event sources should be considered on a case-by-case basis because of the wide variety of devices that can be used.