docker-compose 上的 ElasticSearch 运行状况检查失败

Question

docker-compose 上的 Elasticsearch healthcheck 会停止任何依赖的服务，因为容器始终不健康。我跑步时看到这个docker ps -a --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"

NAMES           IMAGE                  STATUS
elasticsearch   elasticsearch:7.12.1   Up 26 seconds (unhealthy)

我正在尝试启动 metricbeat，以便启动 elasticsearch、kibana 和logstash：

metricbeat:
  image: elastic/metricbeat:7.12.1
  user: root
  depends_on:
    elasticsearch:
      condition: service_healthy
    kibana:
      condition: service_healthy
    logstash:
      condition: service_healthy
    redis:
      condition: service_healthy

如何确保 Elasticsearch（和其他容器运行正常）并允许 metricbeat 以所有可用资源启动？

除非绝对需要，否则我会避免为其中任何一个创建 Docker 映像。

我的 docker-compose 配置如下所示：

version: '3.7'
services:
  elasticsearch:
    # specifying discovery.type='single-node' bypasses bootstrapping checks.
    image: elasticsearch:7.12.1
    container_name: elasticsearch
    healthcheck:
      test: [ "CMD", "curl",  "--fail" , "http://elasticsearch:9200/_cluster/health?wait_for_status=green&timeout=1s", "||", "exit", "1" ]
      interval: 5s
      timeout: 3s
          
    volumes:
      - elasticsearch-data:/usr/share/elasticsearch/data
    networks:
      - elastic
    ports:
      - 9200:9200
      - 9300:9300
    labels:
      co.elastic.metrics/module: "elasticsearch"
      co.elastic.metrics/hosts: "http://elasticsearch:9200"
      co.elastic.metrics/metricsets: "node_stats,node"
      co.elastic.metrics/xpack.enabled: "true"
    environment:
      - node.name=elasticsearch
      - cluster.name=cluster-7
      - discovery.type=single-node
      - 'ES_JAVA_OPTS=-Xms512m -Xmx512m'
      - xpack.monitoring.enabled=true
      - xpack.monitoring.elasticsearch.collection.enabled=true
      
    ulimits:
      memlock:
        soft: -1
        hard: -1
      nofile:
        soft: 65536
        hard: 65536
    cap_add:
      - IPC_LOCK

Answer 1

根据弹性版本的不同，该方法可能有所不同。另外，如果您使用 OpenSearch，您还需要使用其他东西，它们的健康输出有所不同（但仅供参考）

我正在添加我在 docker-compose 中使用的内容

healthcheck:
  interval: 10s
  retries: 80
  test: curl --write-out 'HTTP %{http_code}' --fail --silent --output /dev/null http://localhost:8200/

或者

healthcheck:
   test: curl -s http://elasticsearch01:9200 >/dev/null || exit 1
   interval: 30s
   timeout: 10s
   retries: 50