使用docker swarm搭建EFK（elasticsearch、filebeat、kibana)

elasticsearch安裝

elasticsearch.yml 參考官方文檔https://www.elastic.co/guide/en/elasticsearch/reference/current/docker.html

version: '3'

services: 
  elasticsearch:
    image: elasticsearch:7.4.2
    restart: always
    ulimits: 
      memlock:
        soft: -1
        hard: -1
    ports: 
      - 9200:9200
    networks: 
      - logging
    volumes: 
      - esdata1:/usr/share/elastcisearch/data
      - ./elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
    environment: 
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"

volumes: 
  esdata1:
    driver: local

networks: 
  logging:
    external: 
      name: logging

新版在安裝過程中遇到兩個問題

• 1 the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
  需要新建elasticsearch.yml文件（https://github.com/elastic/elasticsearch/blob/master/distribution/src/config/elasticsearch.yml）
  修改node.name和cluster.initial_master_nodes一致

  # ======================== Elasticsearch Configuration =========================
  #
  # NOTE: Elasticsearch comes with reasonable defaults for most settings.
  #       Before you set out to tweak and tune the configuration, make sure you
  #       understand what are you trying to accomplish and the consequences.
  #
  # The primary way of configuring a node is via this file. This template lists
  # the most important settings you may want to configure for a production cluster.
  #
  # Please consult the documentation for further information on configuration options:
  # https://www.elastic.co/guide/en/elasticsearch/reference/index.html
  #
  # ---------------------------------- Cluster -----------------------------------
  #
  # Use a descriptive name for your cluster:
  #
  cluster.name: es-cluster
  #
  # ------------------------------------ Node ------------------------------------
  #
  # Use a descriptive name for the node:
  #
  node.name: "es-master"
  #
  # Add custom attributes to the node:
  #
  #node.attr.rack: r1
  #
  # ----------------------------------- Paths ------------------------------------
  #
  # Path to directory where to store the data (separate multiple locations by comma):
  #
  #${path.data}
  #
  # Path to log files:
  #
  #${path.logs}
  #
  # ----------------------------------- Memory -----------------------------------
  #
  # Lock the memory on startup:
  #
  #bootstrap.memory_lock: true
  #
  # Make sure that the heap size is set to about half the memory available
  # on the system and that the owner of the process is allowed to use this
  # limit.
  #
  # Elasticsearch performs poorly when the system is swapping the memory.
  #
  # ---------------------------------- Network -----------------------------------
  #
  # Set the bind address to a specific IP (IPv4 or IPv6):
  #
  network.host: 0.0.0.0
  #
  # Set a custom port for HTTP:
  #
  #http.port: 9200
  #
  # For more information, consult the network module documentation.
  #
  # --------------------------------- Discovery ----------------------------------
  #
  # Pass an initial list of hosts to perform discovery when this node is started:
  # The default list of hosts is ["127.0.0.1", "[::1]"]
  #
  discovery.seed_hosts: ["127.0.0.1", "[::1]"]
  #
  # Bootstrap the cluster using an initial set of master-eligible nodes:
  #
  cluster.initial_master_nodes: ["es-master"]
  #
  # For more information, consult the discovery and cluster formation module documentation.
  #
  # ---------------------------------- Gateway -----------------------------------
  #
  # Block initial recovery after a full cluster restart until N nodes are started:
  #
  #gateway.recover_after_nodes: 3
  #
  # For more information, consult the gateway module documentation.
  #
  # ---------------------------------- Various -----------------------------------
  #
  # Require explicit names when deleting indices:
  #
  #action.destructive_requires_name: true
  http.cors.enabled: true
  http.cors.allow-origin: /.*/ 

• 2 max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
  在宿主機修改/etc/sysctl.conf,添加

  vm.max_map_count=262144

filebeat

filebeat 相對于flnent代碼ruqin小，無須修改已經開發的相關java項目，且內存占用小

docker-compose.yml

version: '3'

services: 
  filebeat:
    image: elastic/filebeat:7.4.2
    container_name: filebeat
    volumes: 
      - ./filebeat.yml:/usr/share/filebeat/filebeat.yml
    restart: always
    networks: 
      - logging
    deploy:
      replicas: 1

networks: 
  logging:
    external: 
      name: logging

filebeat.yml

filebeat.inputs:
- type: log
  paths:
    - /var/lib/docker/containers/*/*.log

output.elasticsearch:
  hosts: ["elasticsearch:9200"]

kibana

kibana沒有什么繁瑣的配置，指定ELASTICSEARCH_HOSTS即可

docker-compose.yml 配置如下

version: '3'

services: 
  kibana:
    image: kibana:7.4.2
    ports: 
      - 5601:5601
    networks: 
      - logging
    environment: 
      ELASTICSEARCH_HOSTS: http://elasticsearch:9200

networks: 
  logging: 
    external: 
      name: logging