# ES Test

Once the ES cluster is successfully created (refer to the operation guide for creation), you can perform a preliminary test for the availability of the cluster. Here is an example of testing via a uhost that can access ues by using the curl command.

## Cluster Status Test

```
curl -s -XGET 'http://<host>:9200/_cluster/health?pretty'
```

In normal circumstances, the system returns the result:

``` curl
{
  "cluster_name" : "ues-qwerty",
  "status" : "green",
  "timed_out" : false,
  "number_of_nodes" : 3,
  "number_of_data_nodes" : 3,
  "active_primary_shards" : 1,
  "active_shards" : 2,
  "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
}
```

This indicates that the cluster is in a normal operation state, and then proceed to test data entry.

## Index a Document

For example, the index is "test_index", the type is "information", and "1" is chosen as the ID number. At this time, the request is like this:

```
curl -X PUT \
http://<host>:9200/test_index/information/1 \
-H 'Content-Type: application/json' \
-d '{
    "name": "test_index",
    "age": 5,
    "about": "at shanghai",
    "interests": ["service"]
}'
```

Successful creation returns

``` curl
{"_index":"test_index","_type":"information","_id":"1","_version":1,"result":"created","_shards":{"total":2,"successful":2,"failed":0},"created":true}
```

## Retrieve Document

```
curl -X GET 'http://<host>:9200/test_index/information/1'
```

Returns

``` curl
{"_index":"test_index","_type":"information","_id":"1","_version":1,"found":true,"_source":{
    "name" : "test_index",
    "age": 5,
    "about": "at shanghai",
    "interests": ["service"]
}}
```

## Search Document

```
curl -X GET 'http://<host>:9200/_search'
curl -X GET 'http://<host>:9200/test_index/_search'
curl -X GET 'http://<host>:9200/test_index/information/_search'
curl -X GET "http://<host>:9200/_sql" -H 'Content-Type: application/json' -d'select * from test_index limit 10'
```

## Complex Search

Complex search requires the use of POST method, for details please refer to the Function Document API Document.

## Update Document

```
curl -X PUT \
http://<host>:9200/test_index/information/1 \
-H 'Content-Type: application/json' \
-d '{
    "name" : "test_index",
    "age": 5,
    "about": "at shanghai",
    "interests": ["service", "professional"]
}'
```

Successful update returns

``` curl
{"_index":"test_index","_type":"information","_id":"1","_version":2,"result":"updated","_shards":{"total":2,"successful":2,"failed":0},"created":false}
```

## Delete

Delete document

```
curl -X DELETE 'http://<host>:9200/test_index/information/1'
```

Delete specified type document

```
curl -X DELETE 'http://<host>:9200/test_index/information'
```

Delete index

```
curl -X DELETE 'http://<host>:9200/test_index'
```