docker上的ElasticSearch运行状况检查-合成失败

Question

docker-compose上的Elasticsearch healthcheck会停止任何依赖的服务，因为容器总是不健康的。我在运行docker ps -a --format "table {{.Names}}\t{{.Image}}\t{{.Status}}"时看到了这一点

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

我如何确保elasticsearch (和其他容器是健康的)，并允许metricbeat启动所有可用的资源？

除非绝对必要，否则我会避免为其中任何一个创建Docker镜像。

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

用于d-c文件版本。3.7我使用这个结构：

healthcheck:
  test: curl -u elastic:elastic -s -f elasticsearch:9200/_cat/health >/dev/null || exit 1
  interval: 30s
  timeout: 10s
  retries: 5

Answer 2

根据弹性版本的不同，方法可能会有所不同。此外，如果您使用OpenSearch，您还需要使用其他工具，它们的健康输出略有不同(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

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