docker安装elasticsearch集群--verison:7.12.1

安装ES集群

下载ES镜像

官方dockerhub中最新的ES镜像为7.12.1版本，下载：

docker pull elasticsearch:7.12.1

创建ES目录

mkdir -p /mydata/elasticsearch/config
mkdir -p /mydata/elasticsearch/data
chmod -R 777 /mydata/elasticsearch/data

修改 /etc/sysctl.conf

vim /etc/sysctl.conf
vm.max_map_count = 262144
sysctl -p

修改es配置文件

配置文件如下所示：各个节点只需修改node.name即可
controller1:

vim /mydata/elasticsearch/config/elasticsearch.yml
node.name: controller1
network.host: 0.0.0.0
cluster.name: elasticsearch_cluster
node.master: true
node.data: true
discovery.zen.ping.unicast.hosts: ['192.168.10.190', '192.168.10.191', '192.168.10.192']
discovery.zen.minimum_master_nodes: 2
http.port: 9200
transport.tcp.port: 9300
cluster.initial_master_nodes: controller1

controller2:

vim /mydata/elasticsearch/config/elasticsearch.yml
node.name: controller2
network.host: 0.0.0.0
cluster.name: elasticsearch_cluster
node.master: true
node.data: true
discovery.zen.ping.unicast.hosts: ['192.168.10.190', '192.168.10.191', '192.168.10.192']
discovery.zen.minimum_master_nodes: 2
http.port: 9200
transport.tcp.port: 9300
cluster.initial_master_nodes: controller1

controller3:

vim /mydata/elasticsearch/config/elasticsearch.yml
node.name: controller3
network.host: 0.0.0.0
cluster.name: elasticsearch_cluster
node.master: true
node.data: true
discovery.zen.ping.unicast.hosts: ['192.168.10.190', '192.168.10.191', '192.168.10.192']
discovery.zen.minimum_master_nodes: 2
http.port: 9200
transport.tcp.port: 9300
cluster.initial_master_nodes: controller1

启动

docker run --name elasticsearch --net="host" -p 9200:9200 -p 9300:9300  -e ES_JAVA_OPTS="-Xms256m -Xmx256m" \
-v /mydata/elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml \
-v /mydata/elasticsearch/data:/usr/share/elasticsearch/data \
-v /mydata/elasticsearch/plugins:/usr/share/elasticsearch/plugins -d elasticsearch:7.12.1

启动完成，查看ES集群状态
浏览器访问：http://192.168.10.191:9200/_cat/health?v

查看ES node状态