CSS clusters have default plug-ins. You can view the default plugin information on the console or Kibana.
GET _cat/plugins?v
The following is an example of the response body:
name component version css-3657-ess-esn-1-1 analysis-dynamic-synonym 1.3.6 css-3657-ess-esn-1-1 analysis-icu 1.3.6 css-3657-ess-esn-1-1 analysis-ik 1.3.6 css-3657-ess-esn-1-1 analysis-kuromoji 1.3.6 css-3657-ess-esn-1-1 analysis-logtxt 1.0.0 css-3657-ess-esn-1-1 analysis-nori 1.3.6 css-3657-ess-esn-1-1 analysis-pinyin 1.3.6 css-3657-ess-esn-1-1 analysis-stconvert 1.3.6 css-3657-ess-esn-1-1 hpack 2.0.0 css-3657-ess-esn-1-1 ingest-attachment 1.3.6 css-3657-ess-esn-1-1 obs-store-plugin 1.3.6 css-3657-ess-esn-1-1 opensearch-alerting 1.3.6.0 css-3657-ess-esn-1-1 opensearch-anomaly-detection 1.3.6.0 css-3657-ess-esn-1-1 opensearch-asynchronous-search 1.3.6.0 css-3657-ess-esn-1-1 opensearch-cross-cluster-replication 1.3.6.0 css-3657-ess-esn-1-1 opensearch-index-management 1.3.6.0 css-3657-ess-esn-1-1 opensearch-job-scheduler 1.3.6.0 css-3657-ess-esn-1-1 opensearch-knn 1.3.6.0 css-3657-ess-esn-1-1 opensearch-ml 1.3.6.0 css-3657-ess-esn-1-1 opensearch-observability 1.3.6.0 css-3657-ess-esn-1-1 opensearch-performance-analyzer 1.3.6.0 css-3657-ess-esn-1-1 opensearch-reports-scheduler 1.3.6.0 css-3657-ess-esn-1-1 opensearch-security 1.3.6.0 css-3657-ess-esn-1-1 opensearch-sql 1.3.6.0 css-3657-ess-esn-1-1 repository-obs 1.3.6
name indicates the cluster node name, component indicates the plugin name, and version indicates the plugin version.