Collecting cluster summary diagnostics

Steps to enable collecting cluster summary diagnostics using the DataStax Enterprise Performance Service.

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.

dse.yaml

The location of the dse.yaml file depends on the type of installation:
Package installations /etc/dse/dse.yaml
Tarball 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 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.