Elaticsearch，简称为es， es是一个开源的高扩展的分布式全文检索引擎，它可以近乎实时的存储、检索数据；本身扩展性很好，可以扩展到上百台服务器，处理PB级别的数据。es也使用Java开发并使用Lucene作为其核心来实现所有索引和搜索的功能，但是它的目的是通过简单的RESTful API来隐藏Lucene的复杂性，从而让全文搜索变得简单。

docker network create es

• 创建目录

这个路径和ES路径没啥关系，有尝试直接对应，但启动总是报文件错误就放弃了。

mkdir /app/elasticsearch

• 在该目录下创建配置文件

cluster.name: "docker-cluster"
network.host: 0.0.0.0

#----------------------- BEGIN SECURITY AUTO CONFIGURATION -----------------------
#
# The following settings, TLS certificates, and keys have been automatically
# generated to configure Elasticsearch security features on 20-06-2022 07:34:02
#
# --------------------------------------------------------------------------------

# Enable security features
xpack.security.enabled: false

xpack.security.enrollment.enabled: true

# Enable encryption for HTTP API client connections, such as Kibana, Logstash, and Agents
xpack.security.http.ssl:
  enabled: false
  keystore.path: certs/http.p12

# Enable encryption and mutual authentication between cluster nodes
xpack.security.transport.ssl:
  enabled: true
  verification_mode: certificate
  keystore.path: certs/transport.p12
  truststore.path: certs/transport.p12
# Create a new cluster with the current node only
# Additional nodes can still join the cluster later
cluster.initial_master_nodes: ["246f39b02d6b"]

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

#----------------------- END SECURITY AUTO CONFIGURATION -------------------------

• 创建ES

docker run --name search -it -d -v /app/elasticsearch:/usr/share/elasticsearch/conf -p 9200:9200 -p 9300:9300 --net es elasticsearch:8.2.3

• 进入ES并修改配置文件

ES里面的vi会乱码，这个很奇葩

docker exec -it search sh
cp conf/* config
docker restart search

你可理解这就是一个Web客户端，只是感觉有点过于老了，5年前的东西了。

docker run -p 9100:9100 --net es mobz/elasticsearch-head:5

创建一个名为hello的索引，注意不同的ES版本格式有不同的要求。

curl -X PUT -H "Content-Type: application/json" -d '{
    "settings": {
        "number_of_shards": 3,
        "number_of_replicas": 1
    },
    "mappings": {
        "properties": {
            "name": {
                "type": "text"
            },
            "country": {
                "type": "keyword"
            },
            "age": {
                "type": "integer"
            },
            "date": {
                "type": "date",
                "format": "yyyy-MM-dd HH:mm:ss||yyyy-MM-dd||epoch_millis"
            }
        }
    }
}' http://localhost:9200/hello

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