Docker安装Elasticsearch8详细步骤

前面讲了Elasticsearch7的安装步骤，今天讲讲Elasticsearch8的安装，大同小异。

1、配置环境变量

.env 文件设置运行 docker-compose.yml 配置文件时使用的环境变量。 确保使用 ELASTIC_PASSWORD 和 KIBANA_PASSWORD 变量为 elastic 和 kibana_system 用户指定密码。 这些变量由 docker-compose.yml 文件引用。

vim .env

######
# Password for the 'elastic' user (at least 6 characters)
ELASTIC_PASSWORD=password
 
# Password for the 'kibana_system' user (at least 6 characters)
KIBANA_PASSWORD=password
 
# Version of Elastic products
STACK_VERSION=8.9.1
 
# Set the cluster name
CLUSTER_NAME=docker-cluster
 
# Set to 'basic' or 'trial' to automatically start the 30-day trial
LICENSE=basic
#LICENSE=trial
 
# Port to expose Elasticsearch HTTP API to the host
ES_PORT=9200
#ES_PORT=127.0.0.1:9200
 
# Port to expose Kibana to the host
KIBANA_PORT=5601
#KIBANA_PORT=80
 
# Increase or decrease based on the available host memory (in bytes)
MEM_LIMIT=1073741824
 
# Project namespace (defaults to the current folder name if not set)
#COMPOSE_PROJECT_NAME=myproject

2、配置compose文件

这个 docker-compose.yml 文件创建了一个启用了身份验证和网络加密的安全 Elasticsearch 集群，节点数根据实际情况配置，以及一个安全连接到它的 Kibana 实例，如果不需要可直接去掉。

暴露端口：

此配置在所有网络接口上公开端口 9200。 由于 Docker 处理端口的方式，未绑定到 localhost 的端口使你的 Elasticsearch 集群可公开访问，可能会忽略任何防火墙设置。 如果您不想将端口 9200 暴露给外部主机，请将 .env 文件中的 ES_PORT 的值设置为 127.0.0.1:9200 之类的值。 Elasticsearch 将只能从主机本身访问。

docker-compose.yml 内容如下：

version: "2.2"
 
services:
  setup:
    image: docker.elastic.co/elasticsearch/elasticsearch:${STACK_VERSION}
    volumes:
      - certs:/usr/share/elasticsearch/config/certs
    user: "0"
    command: >
      bash -c '
        if [ x${ELASTIC_PASSWORD} == x ]; then
          echo "Set the ELASTIC_PASSWORD environment variable in the .env file";
          exit 1;
        elif [ x${KIBANA_PASSWORD} == x ]; then
          echo "Set the KIBANA_PASSWORD environment variable in the .env file";
          exit 1;
        fi;
        if [ ! -f certs/ca.zip ]; then
          echo "Creating CA";
          bin/elasticsearch-certutil ca --silent --pem -out config/certs/ca.zip;
          unzip config/certs/ca.zip -d config/certs;
        fi;
        if [ ! -f certs/certs.zip ]; then
          echo "Creating certs";
          echo -ne \
          "instances:\n"\
          "  - name: es01\n"\
          "    dns:\n"\
          "      - es01\n"\
          "      - localhost\n"\
          "    ip:\n"\
          "      - 127.0.0.1\n"\
          > config/certs/instances.yml;
          bin/elasticsearch-certutil cert --silent --pem -out config/certs/certs.zip --in config/certs/instances.yml --ca-cert config/certs/ca/ca.crt --ca-key config/certs/ca/ca.key;
          unzip config/certs/certs.zip -d config/certs;
        fi;
        echo "Setting file permissions"
        chown -R root:root config/certs;
        find . -type d -exec chmod 750 \{\} \;;
        find . -type f -exec chmod 640 \{\} \;;
        echo "Waiting for Elasticsearch availability";
        until curl -s --cacert config/certs/ca/ca.crt https://es01:9200 | grep -q "missing authentication credentials"; do sleep 30; done;
        echo "Setting kibana_system password";
        until curl -s -X POST --cacert config/certs/ca/ca.crt -u elastic:${ELASTIC_PASSWORD} -H "Content-Type: application/json" https://es01:9200/_security/user/kibana_system/_password -d "{\"password\":\"${KIBANA_PASSWORD}\"}" | grep -q "^{}"; do sleep 10; done;
        echo "All done!";
      '
    healthcheck:
      test: ["CMD-SHELL", "[ -f config/certs/es01/es01.crt ]"]
      interval: 1s
      timeout: 5s
      retries: 120
 
  es01:
    depends_on:
      setup:
        condition: service_healthy
    image: docker.elastic.co/elasticsearch/elasticsearch:${STACK_VERSION}
    volumes:
      - certs:/usr/share/elasticsearch/config/certs
      - esdata01:/usr/share/elasticsearch/data
    ports:
      - ${ES_PORT}:9200
    environment:
      - node.name=es01
      - cluster.name=${CLUSTER_NAME}
      - cluster.initial_master_nodes=es01
      #- discovery.seed_hosts=es02
      - ELASTIC_PASSWORD=${ELASTIC_PASSWORD}
      - bootstrap.memory_lock=true
      - xpack.security.enabled=true
      - xpack.security.http.ssl.enabled=true
      - xpack.security.http.ssl.key=certs/es01/es01.key
      - xpack.security.http.ssl.certificate=certs/es01/es01.crt
      - xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
      - xpack.security.http.ssl.verification_mode=certificate
      - xpack.security.transport.ssl.enabled=true
      - xpack.security.transport.ssl.key=certs/es01/es01.key
      - xpack.security.transport.ssl.certificate=certs/es01/es01.crt
      - xpack.security.transport.ssl.certificate_authorities=certs/ca/ca.crt
      - xpack.security.transport.ssl.verification_mode=certificate
      - xpack.license.self_generated.type=${LICENSE}
    mem_limit: ${MEM_LIMIT}
    ulimits:
      memlock:
        soft: -1
        hard: -1
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "curl -s --cacert config/certs/ca/ca.crt https://localhost:9200 | grep -q 'missing authentication credentials'",
        ]
      interval: 10s
      timeout: 10s
      retries: 120
 
  kibana:
    depends_on:
      es01:
        condition: service_healthy
    image: docker.elastic.co/kibana/kibana:${STACK_VERSION}
    volumes:
      - certs:/usr/share/kibana/config/certs
      - kibanadata:/usr/share/kibana/data
    ports:
      - ${KIBANA_PORT}:5601
    environment:
      - SERVERNAME=kibana
      - ELASTICSEARCH_HOSTS=https://es01:9200
      - ELASTICSEARCH_USERNAME=kibana_system
      - ELASTICSEARCH_PASSWORD=${KIBANA_PASSWORD}
      - ELASTICSEARCH_SSL_CERTIFICATEAUTHORITIES=config/certs/ca/ca.crt
    mem_limit: ${MEM_LIMIT}
    healthcheck:
      test:
        [
          "CMD-SHELL",
          "curl -s -I http://localhost:5601 | grep -q 'HTTP/1.1 302 Found'",
        ]
      interval: 10s
      timeout: 10s
      retries: 120
 
volumes:
  certs:
    driver: local
  esdata01:
    driver: local
  kibanadata:
    driver: local

networks:
  app-tier:
    name: app-tier
    driver: bridge

3、启动

docker-compose up -d

4、停止及删除部署

完成实验后，你可以删除网络、容器和 volumes：

docker-compose down -v
docker-compose -f docker-compose-es8.yaml down -v

5、挂载配置

先拷贝配置出来

docker cp kibana:/usr/share/kibana/config/ /usr/local/docker/everything-docker/es8/kibana
docker cp es:/usr/share/elasticsearch/config/ /usr/local/docker/everything-docker/es8/es