こちらにやり方が書いてありました。
cat indices API | Elasticsearch Guide [8.0] | Elastic
次のHTTPリクエストで、取得できます。
GET /_cat/indices // レスポンス [ { "health": "green", "status": "open", "index": ".geoip_databases", "uuid": "eHBNIY2oQJee3w52alIHNA", "pri": "1", "rep": "0", "docs.count": "39", "docs.deleted": "39", "store.size": "37.5mb", "pri.store.size": "37.5mb" }, { "health": "yellow", "status": "open", "index": "demo-index", "uuid": "G8rwDsaRSpCMYayBfbfPdw", "pri": "1", "rep": "1", "docs.count": "2", "docs.deleted": "0", "store.size": "4.9kb", "pri.store.size": "4.9kb" }, { "health": "green", "status": "open", "index": ".apm-custom-link", // 以下略
ただこれだと、JSON形式で見づらいし、情報が多いです。
次のようにすると見やすくなります。インデックス名と、ヘルスの状態に絞り込み、YAML形式で取得できます。
GET /_cat/indices?h=index,health&format=yaml // レスポンス --- - index: ".geoip_databases" health: "green" - index: "demo-index" health: "yellow" - index: ".apm-custom-link" health: "green" - index: ".kibana_task_manager_7.16.2_001" health: "green" - index: ".kibana_7.16.2_001" health: "green" - index: ".apm-agent-configuration" health: "green" - index: "accesslog-2022" health: "yellow" - index: ".tasks" health: "green"