1、环境介绍
Linux:~ # cat /etc/redhat-release CentOS Linux release 7.6.1810 (Core)
2、拉取 elasticserach 镜像
Linux:~ # docker pull elasticsearch "不加版本，表示拉取最新版本"
3、创建 elasticsearch 数据目录
Linux:~ # mkdir -p /opt/elasticsearch/{es1,es2,es3}/{config,data,logs} Linux:~ # tree /opt/elasticsearch/ /opt/elasticsearch/ |-- es1 | |-- config | |-- data | `-- logs |-- es2 | |-- config | |-- data | `-- logs `-- es3 |-- config |-- data `-- logs 12 directories, 0 files
4、创建 elasticsearch 配置文件
- 注意将下列内容中的
本机IP字段，替换成自己机器的IP地址
Linux:~ # cat > /opt/elasticsearch/es1/config/elasticsearch.yml <<EOF cluster.name: elasticsearch-cluster node.name: es-node1 network.bind_host: 0.0.0.0 network.publish_host: 本机IP http.port: 9200 transport.tcp.port: 9300 http.cors.enabled: true http.cors.allow-origin: "*" node.master: true node.data: true discovery.zen.ping.unicast.hosts: ["本机IP:9300","本机IP:9301","本机IP:9302"] discovery.zen.minimum_master_nodes: 1 EOF Linux:~ # cat > /opt/elasticsearch/es2/config/elasticsearch.yml <<EOF cluster.name: elasticsearch-cluster node.name: es-node2 network.bind_host: 0.0.0.0 network.publish_host: 本机IP http.port: 9201 transport.tcp.port: 9301 http.cors.enabled: true http.cors.allow-origin: "*" node.master: true node.data: true discovery.zen.ping.unicast.hosts: ["本机IP:9300","本机IP:9301","本机IP:9302"] discovery.zen.minimum_master_nodes: 1 EOF Linux:~ # cat > /opt/elasticsearch/es3/config/elasticsearch.yml <<EOF cluster.name: elasticsearch-cluster node.name: es-node3 network.bind_host: 0.0.0.0 network.publish_host: 本机IP http.port: 9202 transport.tcp.port: 9302 http.cors.enabled: true http.cors.allow-origin: "*" node.master: true node.data: true discovery.zen.ping.unicast.hosts: ["本机IP:9300","本机IP:9301","本机IP:9302"] discovery.zen.minimum_master_nodes: 1 EOF
5、配置JVM线程数量限制
Linux:~ # echo "vm.max_map_count=262144" >> /etc/sysctl.conf Linux:~ # sysctl -p
注：这一步是为了防止启动容器时，报出如下错误：
bootstrap checks failed max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]*
6、启动 elasticsearch docker 集群
#!/bin/bash xms='-Xms256m' xmx='-Xmx256m' portes=( 9200 9201 9202 ) portcluster=( 9300 9301 9302 ) espath='/opt/elasticsearch' dockerespath='/usr/share/elasticsearch' image='elasticsearch:latest' num=1 portc=0 for port in ${portes[*]} do portc=$(( ${num} - 1 )) docker run -d -e ES_JAVA_OPTS=""${xms}" "${xmx}"" \ -p ${port}:${port} \ -p ${portcluster[$portc]}:${portcluster[$portc]} \ -v ${espath}/es${num}/config/elasticsearch.yml:${dockerespath}/config/elasticsearch.yml \ -v ${espath}/es${num}/data:${dockerespath}/data \ -v ${espath}/es${num}/logs:${dockerespath}/logs \ --name es-0${num} ${image} let num++ done
7、验证 elasticsearch 集群
"因为是在公有云服务器上部署的，ip不方便透露，就用localhostip代替了" Linux:~ # curl "http://localhostip:9200/_cat/nodes" localhostip 31 96 2 0.15 1.12 1.06 mdi - es-node2 localhostip 36 96 2 0.15 1.12 1.06 mdi - es-node1 localhostip 32 96 2 0.15 1.12 1.06 mdi * es-node3 Linux:~ # curl "http://localhostip:9200/_cluster/health?pretty" { "cluster_name" : "elasticsearch-cluster", "status" : "green", "timed_out" : false, "number_of_nodes" : 3, "number_of_data_nodes" : 3, "active_primary_shards" : 0, "active_shards" : 0, "relocating_shards" : 0, "initializing_shards" : 0, "unassigned_shards" : 0, "delayed_unassigned_shards" : 0, "number_of_pending_tasks" : 0, "number_of_in_flight_fetch" : 0, "task_max_waiting_in_queue_millis" : 0, "active_shards_percent_as_number" : 100.0 }
8、插入以及查看 elasticsearch 索引信息
"插入索引" Linux:~ # curl -XPUT "http://localhostip:9200/2021-01-21/myelasticsearch/1?pretty" -H "Content-type: application/json" -d '{"name": "bandian", "country": "China", "age": "25", "birthday": "1995-03-20", "sex": "gentleman", "style":"tie han han"}' { "_index" : "2021-01-21", "_type" : "myelasticsearch", "_id" : "1", "_version" : 1, "result" : "created", "_shards" : { "total" : 2, "successful" : 2, "failed" : 0 }, "created" : true }
"查看索引" Linux:~ # curl -XGET "http://localhostip:9200/2021-01-21/myelasticsearch/1?pretty" -H "Content-type: application/json" { "_index" : "2021-01-21", "_type" : "myelasticsearch", "_id" : "1", "_version" : 1, "found" : true, "_source" : { "name" : "bandian", "country" : "China", "age" : "25", "birthday" : "1995-03-20", "sex" : "gentleman", "style" : "tie han han" } } "从这里可以看出，索引的创建模板格式：_index，_type，_id，_version，found，_source"
