curl https://localhost:9200/ nodes/status

curl https://localhost:9200/_nodes/status
{"_nodes":{"total":0,"successful":0,"failed":0},"cluster_name":"docker-cluster","nodes":{}}

kubectl -n your_namespace exec -ti your_elastic_pod1 -- /bin/sh -c "curl -k https://localhost:9200/_nodes/status" | jq .
{
  "error": {
    "root_cause": [
      {
        "type": "security_exception",
        "reason": "missing authentication credentials for REST request [/_nodes/status]",
        "header": {
          "WWW-Authenticate": [
            "Bearer realm=\"security\"",
            "ApiKey",
            "Basic realm=\"security\" charset=\"UTF-8\""
          ]
        }
      }
    ],
    "type": "security_exception",
    "reason": "missing authentication credentials for REST request [/_nodes/status]",
    "header": {
      "WWW-Authenticate": [
        "Bearer realm=\"security\"",
        "ApiKey",
        "Basic realm=\"security\" charset=\"UTF-8\""
      ]
    }
  },
  "status": 401
}

See also

• Elastic: ELK, Elasticsearch, Logstash, Kibana, Installation, AWS Elasticsearch, Elastic SIEM, Elastic Beats, metricbeat, filebeat, journalbeat, Elastisearch Service , Search guard, Elasticsearch logs, curator, ILM, Lumberjack protocol, aws_elasticsearch_domain, KQL, elasticsearch.yml, elasticsearch-plugin, elasticsearch-certutil, Elasticsearch release notes/changelog