Infrastructure statistics & HPA statistics come from the NFVI layer.

Since Prometheus is chosen as stats aggregation service, it is important to ensure that exporters compatible with Prometheus are part of the NFVI.  Following exports are expected to be present.

• Node exporter
• Collectd - Barometer

In Casablanca, scope is to export following. Hence following configuration is needed at NFVI level.

Node exporter:

• CPU
• DISK stats
• file system
• loadavg
• meminfo
• memstat_numa

Collectd:

• hugepages (if it is not available from meminfo of node-exporter)
• RDT
• IPMI
• NUMA (if memstat_numa does not have enough information)