This functionality is in beta and is subject to change. The design and code is less mature than official GA features and is being provided as-is with no warranties. Beta features are not subject to the support SLA of official GA features.
replication metriset contains information about the replicas. Note that you won’t see any data if you don’t have any replicas configured on your Couchbase buckets.
For a description of each field in the metricset, see the exported fields section.
Intro to Kibana
ELK for Logs & Metrics