创建es集群

编写一个docker-compose.yaml文件，内容如下

version: '2.2'
services:es01:image: elasticsearch:7.12.1container_name: es01environment:- node.name=es01- cluster.name=es-docker-cluster- discovery.seed_hosts=es02,es03- cluster.initial_master_nodes=es01,es02,es03- "ES_JAVA_OPTS=-Xms512m -Xmx512m"volumes:- data01:/usr/share/elasticsearch/dataports:- 9200:9200networks:- elastices02:image: elasticsearch:7.12.1container_name: es02environment:- node.name=es02- cluster.name=es-docker-cluster- discovery.seed_hosts=es01,es03- cluster.initial_master_nodes=es01,es02,es03- "ES_JAVA_OPTS=-Xms512m -Xmx512m"volumes:- data02:/usr/share/elasticsearch/dataports:- 9201:9200networks:- elastices03:image: elasticsearch:7.12.1container_name: es03environment:- node.name=es03- cluster.name=es-docker-cluster- discovery.seed_hosts=es01,es02- cluster.initial_master_nodes=es01,es02,es03- "ES_JAVA_OPTS=-Xms512m -Xmx512m"volumes:- data03:/usr/share/elasticsearch/datanetworks:- elasticports:- 9202:9200
volumes:data01:driver: localdata02:driver: localdata03:driver: localnetworks:elastic:driver: bridge

修改/etc/sysctl.conf文件         

vi /etc/sysctl.conf

添加下面的内容

vm.max_map_count=262144

然后执行命令，让配置生效

sysctl -p

通过docker-compose启动集群

docker-compose up -d

集群状态监控

拉取镜像

docker pull lmenezes/cerebro:0.9.4

运行

docker run -d --name cerebro -p 9000:9000 lmenezes/cerebro:0.9.4

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