Collecting cluster summary diagnostics

The following cluster summary diagnostic tables collect statistics 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.

The location of the dse.yaml file depends on the type of installation:

Package installations and Installer-Services installations: /etc/dse/dse.yaml
Tarball installations and Installer-No Services installations: <installation_location>/resources/dse/conf/dse.yaml

Procedure

To enable collecting cluster summary diagnostics using the DataStax Enterprise 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 parameter.

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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