[elasticsearch] How to know elastic search installed version from kibana?

Currently I am getting these alerts:

Upgrade Required Your version of Elasticsearch is too old. Kibana requires Elasticsearch 0.90.9 or above.

Can someone tell me if there is a way I can find the exact installed version of ELS?

I would like to add which isn't mentioned in above answers.

From your kibana's dev console, hit following command:

GET /

This is similar to accessing localhost:9200 from browser.

Hope this will help someone.

If you have installed x-pack to secure elasticseach, the request should contains the valid credential details.

curl -XGET -u "elastic:passwordForElasticUser" 'localhost:9200'

Infact, if the security enabled all the subsequent requests should follow the same pattern (inline credentials should be provided).

You can check version of ElasticSearch by the following command. It returns some other information also:

curl -XGET 'localhost:9200'

{
  "name" : "Forgotten One",
  "cluster_name" : "elasticsearch",
  "version" : {
    "number" : "2.3.4",
    "build_hash" : "e455fd0c13dceca8dbbdbb1665d068ae55dabe3f",
    "build_timestamp" : "2016-06-30T11:24:31Z",
    "build_snapshot" : false,
    "lucene_version" : "5.5.0"
  },
  "tagline" : "You Know, for Search"
}

Here you can see the version number: 2.3.4

Typically Kibana is installed in /opt/logstash/bin/kibana . So you can get the kibana version as follows

/opt/kibana/bin/kibana --version

To check Version of Your Running Kibana,Try this:

Step1. Start your Kibana Service.

Step2. Open Browser and Type below line,

    localhost:5601

Step3. Go to settings->About

  You can See Version of Your Running kibana.

You can Try this, After starting Service of elasticsearch Type below line in your browser.

         localhost:9200

     It will give Output Something like that,

          {
           "status" : 200,
           "name" : "Hypnotia",
           "cluster_name" : "elasticsearch",
           "version" : {
           "number" : "1.7.1",
           "build_hash" : "b88f43fc40b0bcd7f173a1f9ee2e97816de80b19",
           "build_timestamp" : "2015-07-29T09:54:16Z",
           "build_snapshot" : false,
            "lucene_version" : "4.10.4"
                  },
            "tagline" : "You Know, for Search"
                  }

Another way to do it on Ubuntu 18.0.4

sudo /usr/share/kibana/bin/kibana --version

If you are logged into your Kibana, you can click on the Management tab and that will show your Kibana version. Alternatively, you can click on the small tube-like icon and that will show the version number.

The user @manoj has provided the correct answer to the question. From Kibana host, a request to http://localhost:9200/ will not be answered, unless ElasticSearch is also running on the same node. Kibana listens on port 5601 not 9200.

In most cases, except for DEV, ElasticSearch will not be on the same node as Kibana, for a number of reasons. Therefore, to get information about your ElasticSearch from Kibana, you should select the "Dev Tools" tab on the left and in the console issue the command: GET /

navigate to the folder where you have installed your kibana if you have used yum to install kibana it will be placed in following location by default

/usr/share/kibana

then use the following command

bin/kibana --version