[jira] [Created] (NIFI-14304) Expand ElasticSearchClientService HTTP HOST Instructions

["Bob Paulin (Jira)" <ji...@apache.org>]

Bob Paulin created NIFI-14304:
---------------------------------

             Summary: Expand ElasticSearchClientService HTTP HOST Instructions
                 Key: NIFI-14304
                 URL: https://issues.apache.org/jira/browse/NIFI-14304
             Project: Apache NiFi
          Issue Type: Task
          Components: Extensions
    Affects Versions: 2.3.0
            Reporter: Bob Paulin


The note about HTTP Host that says 

```
{color:#000000}{color:#2a00ff}Note that the Host is included in requests as a header (typically including domain and port, e.g. elasticsearch:9200).{color}{color}

```

The intent appears to inform the user that the Host header will also be modified. However this often this leads the user to specify only host and port.  This incorrect configuration does trigger a validation message however the user is not provided a suggestion of the proper format without reviewing the code to see the URI based validation.

Suggest adding a bit more information to this error to improve the experience.

EX

```
{color:#2a00ff}The HTTP Hosts should be valid URIs including protocol, domain and port for each entry. {color}

{color:#2a00ff}For example "https://elasticsearch1:9200,https://elasticsearch2:9200"
```{color}



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