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Elasticsearch 8.0 を docker-compose で起動する

fujimotoshinjifujimotoshinji

Elasticsearch をローカルでサクッと Docker で起動して、Kibana から操作したい時に Elasticsearch 7.x と同じ手順でできなかったのでそのメモ

TLDR

簡単にセキュリティ無効化で利用したい場合

version: "3"

services:
  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:8.0.0
    ports:
      - 9200:9200
    environment:
      - discovery.type=single-node
      - xpack.security.enabled=false
    ulimits:
      memlock:
        soft: -1
        hard: -1

  kibana:
    image: docker.elastic.co/kibana/kibana:8.0.0
    environment:
      ELASTICSEARCH_HOSTS: http://elasticsearch:9200
    ports:
       - 5601:5601

フル機能で利用したい場合

ユーザー名：elastic、パスワード：password でログイン。

version: "3"

services:
  setup:
    image: docker.elastic.co/elasticsearch/elasticsearch:8.0.0
    volumes:
      - certs:/usr/share/elasticsearch/config/certs
    user: "0"
    command: >
      bash -c '
        if [ ! -f config/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 config/certs/certs.zip ]; then
          echo "Creating certs";
          echo -ne \
          "instances:\n"\
          "  - name: elasticsearch\n"\
          "    dns:\n"\
          "      - elasticsearch\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://elasticsearch: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:password -H "Content-Type: application/json" https://elasticsearch:9200/_security/user/kibana_system/_password -d "{\"password\":\"password\"}" | grep -q "^{}"; do sleep 10; done;
        echo "All done!";
      '
    healthcheck:
      test: ["CMD-SHELL", "[ -f config/certs/elasticsearch/elasticsearch.crt ]"]
      interval: 10s
      timeout: 10s
      retries: 120

  elasticsearch:
    depends_on:
      setup:
        condition: service_healthy
    image: docker.elastic.co/elasticsearch/elasticsearch:8.0.0
    volumes:
      - certs:/usr/share/elasticsearch/config/certs
    ports:
      - 9200:9200
    environment:
      - ES_JAVA_OPTS="-Xms1g -Xmx1g"
      - ELASTIC_PASSWORD=password
      - bootstrap.memory_lock=true
      - xpack.security.enabled=true
      - xpack.security.http.ssl.enabled=true
      - xpack.security.http.ssl.key=certs/elasticsearch/elasticsearch.key
      - xpack.security.http.ssl.certificate=certs/elasticsearch/elasticsearch.crt
      - xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
      - xpack.security.http.ssl.verification_mode=certificate
      - discovery.type=single-node
    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:
      elasticsearch:
        condition: service_healthy
    image: docker.elastic.co/kibana/kibana:8.0.0
    volumes:
      - certs:/usr/share/kibana/config/certs
    ports:
      - 5601:5601
    environment:
      - ELASTICSEARCH_HOSTS=https://elasticsearch:9200
      - ELASTICSEARCH_USERNAME=kibana_system
      - ELASTICSEARCH_PASSWORD=password
      - ELASTICSEARCH_SSL_CERTIFICATEAUTHORITIES=config/certs/ca/ca.crt

volumes:
  certs:
    driver: local
fujimotoshinjifujimotoshinji

7.x の時につかっていた docker-compose.yml。kuromoji とか入れる時は別途 Dockerfile でビルドしてた

version: "3"

services:
  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.15.0
    ports:
      - 9200:9200
    environment:
      ES_JAVA_OPTS: -Xms1g -Xmx1g
      discovery.type: single-node

  kibana:
    image: docker.elastic.co/kibana/kibana:7.15.0
    environment:
      ELASTICSEARCH_HOSTS: http://elasticsearch:9200
    ports:
      - 5601:5601

このままイメージのタグを 8.0.0 にして起動すると、 Kibana にアクセスするとログイン画面が表示されるけどパスワードがわからない。
標準出力されるらしいけど Docker のログ表示しても表示されない。

single-node モードでもセキュリティが有効になるようになったっぽい。

fujimotoshinjifujimotoshinji

公式ドキュメントの Docker 起動のページも変わってた。

https://www.elastic.co/guide/en/elasticsearch/reference/8.0/docker.html

  1. Elasticsearch 起動
  2. 出力されるパスワード、エンロールトークン？を控える
  3. 生成された CA 証明書をダウンロード
  4. CA 証明書、elastic ユーザー、パスワードを指定してアクセス

エンロールトークンはクラスタにノードを追加する時に必要なトークン

fujimotoshinjifujimotoshinji

docker-compose.yml で 起動する（security 無効化）

7.x と同じようにユーザー認証も SSL 通信も不要な場合は Security を無効化すればいい

version: "3"

services:
  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:8.0.0
    ports:
      - 9200:9200
    environment:
      - discovery.type=single-node
      - xpack.security.enabled=false
    ulimits:
      memlock:
        soft: -1
        hard: -1

  kibana:
    image: docker.elastic.co/kibana/kibana:8.0.0
    environment:
      ELASTICSEARCH_HOSTS: http://elasticsearch:9200
    ports:
       - 5601:5601

fujimotoshinjifujimotoshinji

docker-compose.yml で 起動する（security 有効）

パスワード固定でいいので Security 有効化のままシングルノードで起動する場合。

version: "3"

services:
  setup:
    image: docker.elastic.co/elasticsearch/elasticsearch:8.0.0
    volumes:
      - certs:/usr/share/elasticsearch/config/certs
    user: "0"
    command: >
      bash -c '
        if [ ! -f config/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 config/certs/certs.zip ]; then
          echo "Creating certs";
          echo -ne \
          "instances:\n"\
          "  - name: elasticsearch\n"\
          "    dns:\n"\
          "      - elasticsearch\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://elasticsearch: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:password -H "Content-Type: application/json" https://elasticsearch:9200/_security/user/kibana_system/_password -d "{\"password\":\"password\"}" | grep -q "^{}"; do sleep 10; done;
        echo "All done!";
      '
    healthcheck:
      test: ["CMD-SHELL", "[ -f config/certs/elasticsearch/elasticsearch.crt ]"]
      interval: 10s
      timeout: 10s
      retries: 120

  elasticsearch:
    depends_on:
      setup:
        condition: service_healthy
    image: docker.elastic.co/elasticsearch/elasticsearch:8.0.0
    volumes:
      - certs:/usr/share/elasticsearch/config/certs
    ports:
      - 9200:9200
    environment:
      - ES_JAVA_OPTS="-Xms1g -Xmx1g"
      - ELASTIC_PASSWORD=password
      - bootstrap.memory_lock=true
      - xpack.security.enabled=true
      - xpack.security.http.ssl.enabled=true
      - xpack.security.http.ssl.key=certs/elasticsearch/elasticsearch.key
      - xpack.security.http.ssl.certificate=certs/elasticsearch/elasticsearch.crt
      - xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
      - xpack.security.http.ssl.verification_mode=certificate
      - discovery.type=single-node
    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:
      elasticsearch:
        condition: service_healthy
    image: docker.elastic.co/kibana/kibana:8.0.0
    volumes:
      - certs:/usr/share/kibana/config/certs
    ports:
      - 5601:5601
    environment:
      - ELASTICSEARCH_HOSTS=https://elasticsearch:9200
      - ELASTICSEARCH_USERNAME=kibana_system
      - ELASTICSEARCH_PASSWORD=password
      - ELASTICSEARCH_SSL_CERTIFICATEAUTHORITIES=config/certs/ca/ca.crt

volumes:
  certs:
    driver: local

このスクラップは2022/02/17にクローズされました