Figure 4-2 demonstrates the logical and hierarchy infrastructure connectivity of CSM and  xCAT. The management nodes are managing the CSM PostgreSQL DB, and all compute  nodes are connected to a primary and backup service nodes. Figure 4-3 demonstrates how CSM uses the lightweight daemons running on every node to  integrate and correlate different logs, events, and information from cluster entities that are  ingested into the BSD cluster and the CSM DB to get in-depth insights about the cluster. Figure 4-2 The logical and hierarchy infrastructure connectivity of CSM and xCAT Figure 4-3 Cluster Systems Management architecture Chapter 4. Reference architecture  39