Elasticsearch 7.2 伪集群搭建

平时需要测试的时候没有那么多虚拟机做多台机器的集群搭建，所以就在一台机器上部署 elasticsearch 的集群搭建。本次我的测试环境是三个节点，使用 elasticsearch 7.2 版本。

#### 方法一： 直接使用docker-compose启动

**注意**：挂载目录需要先给777权限，不然会报错，错误没截图，忘记了

```
chmod 777 -R /data/{els,els-slave,els-slave-2}/
```

**docker-compose.yml**

```
version: '3'
services:
  es-master:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.2.0
    container_name: master
    environment:
      - cluster.name=myels
      - node.name=master
      - network.publish_host=es-master
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
      - cluster.initial_master_nodes=master,node1,node2
      - discovery.seed_hosts=master,node1,node2
    volumes:
      - /data/els/data:/usr/share/elasticsearch/data
      - /data/els/logs:/usr/share/elasticsearch/logs
    ports:
      - 9200:9200
      - 9300:9300
    networks:
      - es7net
  es-node1:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.2.0
    container_name: node1
    environment:
      - cluster.name=myels
      - node.name=node1
      - network.publish_host=es-node1
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
      - cluster.initial_master_nodes=master,node1,node2
      - discovery.seed_hosts=master,node1,node2
    volumes:
      - /data/els-slave/data:/usr/share/elasticsearch/data
      - /data/els-slave/logs:/usr/share/elasticsearch/logs
    networks:
      - es7net
  es-node2:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.2.0
    container_name: node2
    environment:
      - cluster.name=myels
      - node.name=node2
      - network.publish_host=es-node2
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
      - cluster.initial_master_nodes=master,node1,node2
      - discovery.seed_hosts=master,node1,node2
    volumes:
      - /data/els-slave-2/data:/usr/share/elasticsearch/data
      - /data/els-slave-2/logs:/usr/share/elasticsearch/logs
    networks:
      - es7net

networks:
  es7net:
    driver: bridge
```

#### 方法二：docker-compose启动，挂载配置文件

**目录结构**

```
/data/elk/es7-cluster
├── docker-compose.yml
├── master
│   └── elasticsearch.yml
├── node-1
│   └── elasticsearch.yml
└── node-2
    └── elasticsearch.yml
```

**docker-compose.yml**

```
version: '3'
services:
  es-master:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.2.0
    container_name: master
    environment:
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    volumes:
      - /data/els/data:/usr/share/elasticsearch/data
      - /data/els/logs:/usr/share/elasticsearch/logs
      - ./master/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
    ports:
      - 9200:9200
      - 9300:9300
    networks:
      - es7net
  es-node1:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.2.0
    container_name: node1
    environment:
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    volumes:
      - /data/els-slave/data:/usr/share/elasticsearch/data
      - /data/els-slave/logs:/usr/share/elasticsearch/logs
      - ./slave-1/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
    ports:
      - 9201:9201
      - 9301:9301
    networks:
      - es7net
  es-node2:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.2.0
    container_name: node2
    environment:
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    volumes:
      - /data/els-slave-2/data:/usr/share/elasticsearch/data
      - /data/els-slave-2/logs:/usr/share/elasticsearch/logs
      - ./slave-2/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml
    ports:
      - 9202:9202
      - 9302:9302
    networks:
      - es7net

networks:
  es7net:
    driver: bridge
```

#### **es-master节点**

```
cluster.name: myels
node.name: es-master
node.master: true
node.data: true
network.host: 0.0.0.0
network.publish_host: 192.168.0.3
http.port: 9200
transport.tcp.port: 9300
cluster.initial_master_nodes:
  - es-master
  - es-node1
  - es-node2

discovery.seed_hosts:
  - 192.168.0.3:9301
  - 192.168.0.3:9302

http.cors.enabled: true
http.cors.allow-origin: "*"
```

**es-node1节点**

```
cluster.name: myels
node.name: es-node1
node.master: true
node.data: true
network.host: 0.0.0.0
http.port: 9201
transport.tcp.port: 9301
network.publish_host: 192.168.0.3
cluster.initial_master_nodes:
  - es-master
  - es-node1
  - es-node2
discovery.seed_hosts:
  - 192.168.0.3:9300
  - 192.168.0.3:9302
http.cors.enabled: true
http.cors.allow-origin: "*"
```

**es-node2 节点**

```
cluster.name: myels
node.name: es-node2
node.master: true
node.data: true
network.host: 0.0.0.0
network.publish_host: 192.168.0.3
http.port: 9202
transport.tcp.port: 9302
cluster.initial_master_nodes:
  - es-master
  - es-node1
  - es-node2
discovery.seed_hosts:
  - 192.168.0.3:9300
  - 192.168.0.3:9302
http.cors.enabled: true
http.cors.allow-origin: "*"
```
#### 参考
```
https://www.cnblogs.com/zenan/p/10983580.html
```

Elasticsearch 7.2 伪集群搭建

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