Collecting cluster summary diagnostics

The following cluster summary diagnostic tables collect statistics for DataStax Enterprise (DSE) at a cluster-wide level:

cluster_snapshot

Per node system metrics.
dc_snapshot

Aggregates node_snapshot data at the datacenter level.
node_snapshot

Aggregates node_snapshot data for the whole cluster.

Procedure

To enable collecting cluster summary diagnostics using the DSE Performance Service:
Edit the dse.yaml file.

In the dse.yaml file, set the enabled option for cluster_summary_stats_options to true.

# Cluster summary stats options
cluster_summary_stats_options:
    enabled: true
    refresh_rate_ms: 10000

(Optional) To control how often the statistics are refreshed, increase or decrease the refresh_rate_ms option in dse.yaml.

The refresh_rate_ms specifies the length of the sampling period, that is, the frequency with which this data is updated.

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