# elasticsearch

## install

- [docker](https://registry.hub.docker.com/_/elasticsearch)

```bash
docker pull elasticsearch:tag
docker network create somenetwork
docker run -d --name es --net somenetwork -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" elasticsearch:tag
docker run -d --name es -p 9200:9200 -p 9300:9300 -e ES_JAVA_OPTS="-Xms512m -Xmx512m" -e "discovery.type=single-node" elasticsearch:7.14.2

# 修改配置
docker exec -it es bash
vi config/elasticsearch.yml

http.cors.enabled: true
http.cors.allow-origin: "*"
network.publish_host: 127.0.0.1


# 可视化
docker run -p 9800:9800 -d --link es:demo --name eshd containerize/elastichd
#docker run -p 1358:1358 -d appbaseio/dejavu
#docker pull mobz/elasticsearch-head:5
#docker run -d -p 9100:9100 mobz/elasticsearch-head:5
```





## goang sdk

```go
// https://github.com/elastic/go-elasticsearch
import (
	github.com/elastic/go-elasticsearch/v7
)

es, err := elasticsearch.NewClient(elasticsearch.Config{})

// create document
			req := esapi.IndexRequest{
				Index: "sample_edge",
				Body:  bytes.NewReader(body),
			}
			res, err := req.Do(context.Background(), es)
			if err != nil {
				return
			}
			defer res.Body.Close()

```