# ELK Docker Install

ELK Docker 安裝步驟

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## 一、架構

Elastic stack架構圖如下


## 二、安裝步驟

透過Docker安裝，是很容易的，重點是所有的Container都要在同一個網路下面

> 此安裝步驟根據官方文件分享

1. 新增`docker-compose.yml`

    version: '2.2'
    services:
      es01:
        image: docker.elastic.co/elasticsearch/elasticsearch:7.12.0
        container_name: es01
        environment:
          - node.name=es01
          - cluster.name=es-docker-cluster
          - discovery.seed_hosts=es02,es03
          - cluster.initial_master_nodes=es01,es02,es03
          - bootstrap.memory_lock=true
          - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
        ulimits:
          memlock:
            soft: -1
            hard: -1
        volumes:
          - data01:/usr/share/elasticsearch/data
        ports:
          - 9200:9200
        networks:
          - elastic

    es02:
        image: docker.elastic.co/elasticsearch/elasticsearch:7.12.0
        container_name: es02
        environment:
          - node.name=es02
          - cluster.name=es-docker-cluster
          - discovery.seed_hosts=es01,es03
          - cluster.initial_master_nodes=es01,es02,es03
          - bootstrap.memory_lock=true
          - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
        ulimits:
          memlock:
            soft: -1
            hard: -1
        volumes:
          - data02:/usr/share/elasticsearch/data
        networks:
          - elastic

      es03:
        image: docker.elastic.co/elasticsearch/elasticsearch:7.12.0
        container_name: es03
        environment:
          - node.name=es03
          - cluster.name=es-docker-cluster
          - discovery.seed_hosts=es01,es02
          - cluster.initial_master_nodes=es01,es02,es03
          - bootstrap.memory_lock=true
          - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
        ulimits:
          memlock:
            soft: -1
            hard: -1
        volumes:
          - data03:/usr/share/elasticsearch/data
        networks:
          - elastic

      kib01:
        image: docker.elastic.co/kibana/kibana:7.12.0
        container_name: kib01
        ports:
          - 5601:5601
        environment:
          ELASTICSEARCH_URL: http://es01:9200
          ELASTICSEARCH_HOSTS: '["http://es01:9200","http://es02:9200","http://es03:9200"]'
        networks:
          - elastic

    volumes:
      data01:
        driver: local
      data02:
        driver: local
      data03:
        driver: local

    networks:
      elastic:
        driver: bridge

2. 確保Docker Engine 至少有4GB
3. Run docker-compose 以執行 Elasticsearch 三個節點，與 Kibana
`docker-compose up`
4. 開啟 kibana: [http://localhost:5601](http://localhost:5601)