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.

Where is the dse.yaml file?

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

Installation Type Location

Package installations + Installer-Services installations

/etc/dse/dse.yaml

Tarball installations + Installer-No Services installations

<installation_location>/resources/dse/conf/dse.yaml

Procedure

To enable collecting cluster summary diagnostics using the DataStax Enterprise Performance Service:

  1. Edit the dse.yaml file.

  2. 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
  3. 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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