# Elasticsearch Unable to revive connection **URL:** \ **Category:** Kibana\ **Created:** [November 24, 2017, 4:09pm UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055 "2017-11-24T16:09:59Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![AskingBoy](https://avatars.discourse-cdn.com/v4/letter/a/2bfe46/32.png) [@AskingBoy](https://discuss.elastic.co/u/AskingBoy)\ **Post date:** [November 24, 2017, 4:10pm UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/1 "2017-11-24T16:10:00Z")
Here the hole is what i am running into 1. i tried to resolve the issue with "elasticsearch plugin is red". Then i thought the index .kibana still there, so i remove it by "curl -XDELETE [http://localhost:9200/.kibana](http://localhost:9200/.kibana)". i thought it may work. 2. then i restart kibana. that is how i get unable to revive connection. log [15:34:56.681] [info][status][plugin:kibana@6.0.0] Status changed from uninitialized to green - Ready log [15:34:56.733] [info][status][plugin:elasticsearch@6.0.0] Status changed from uninitialized to yellow - Waiting for Elasticsearch log [15:34:56.764] [error][admin][elasticsearch] Request error, retrying HEAD [http://xxx.xxx.xxx.0:9200/](http://xxx.xxx.xxx.0:9200/) =\> connect ECONNREFUSED xxx.xxx.xxx.0:9200 log [15:34:56.770] [warning][admin][elasticsearch] Unable to revive connection: [http://xxx.xxx.xxx.0:9200/](http://xxx.xxx.xxx.0:9200/) log [15:34:56.771] [warning][admin][elasticsearch] No living connections log [15:34:56.774] [info][status][plugin:console@6.0.0] Status changed from uninitialized to green - Ready log [15:34:56.778] [error][status][plugin:elasticsearch@6.0.0] Status changed from yellow to red - Unable to connect to Elasticsearch at [http://xxx.xxx.xxx.0:9200](http://xxx.xxx.xxx.0:9200). log [15:34:56.789] [info][status][plugin:metrics@6.0.0] Status changed from uninitialized to green - Ready log [15:34:56.976] [info][status][plugin:timelion@6.0.0] Status changed from uninitialized to green - Ready log [15:34:56.981] [info][listening] Server running at [http://xxx.xxx.xxx.0:5600](http://xxx.xxx.xxx.0:5600) log [15:34:56.982] [error][status][ui settings] Status changed from uninitialized to red - Elasticsearch plugin is red log [15:34:59.285] [warning][admin][elasticsearch] Unable to revive connection: [http://xxx.xxx.xxx.0:9200/](http://xxx.xxx.xxx.0:9200/) log [15:34:59.285] [warning][admin][elasticsearch] No living connections log [15:35:01.790] [warning][admin][elasticsearch] Unable to revive connection: [http://xxx.xxx.xxx.0:9200/](http://xxx.xxx.xxx.0:9200/) log [15:35:01.792] [warning][admin][elasticsearch] No living connections log [15:35:04.302] [warning][admin][elasticsearch] Unable to revive connection: [http://xxx.xxx.xxx.0:9200/](http://xxx.xxx.xxx.0:9200/) log [15:35:04.303] [warning][admin][elasticsearch] No living connections log [15:35:06.808] [warning][admin][elasticsearch] Unable to revive connection: [http://xxx.xxx.xxx.0:9200/](http://xxx.xxx.xxx.0:9200/) log [15:35:06.809] [warning][admin][elasticsearch] No living connections 3. i tried to solve the stuff. then i tested if es is running normally, "curl [http://localhost:9200](http://localhost:9200)" gave me a positive result showing it's running good. However, the url with ip:port is what i hvnt tried. Interesting thing happened that "curl [http://xxx.xxx.xxx.0:9200](http://xxx.xxx.xxx.0:9200)" showed "couldn't connect to host" 4. here r my configs es config: cluster.name=myes [node.name](http://node.name): mynode-1 path.data:/data/es network.host:127.0.0.1 http.port: 9200 discovery.zen.ping.unicast.hosts: ["127.0.0.1", "xxx.xx.xx.xx"] discovery.zen.minimum\_master\_nodes: 1 kibana config: server.port: 5600 server.host: "localhost" elasticsearch.preserveHost: true kibana.index: ".kibana" kibana.defaultAppId: "discover" elasticsearch.username: "es" elasticsearch.password: "es123" pid.file: /var/run/kibana.pid 1. how can i get kibana and es to run and cooperate perfectly? Do appreciate any help from u masters....... ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [November 25, 2017, 2:46pm UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/2 "2017-11-25T14:46:47Z")
What is the full output of the Elasticsearch [cluster health API](https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-health.html)? ---
**Author:** ![AskingBoy](https://avatars.discourse-cdn.com/v4/letter/a/2bfe46/32.png) [@AskingBoy](https://discuss.elastic.co/u/AskingBoy)\ **Post date:** [November 26, 2017, 10:00am UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/3 "2017-11-26T10:00:18Z")
this should be the output { "cluster\_name":"my-es", "status":"red", "timed\_out":false, "number\_of\_nodes":1, "number\_of\_data\_nodes":1, "active\_primary\_shards":0, "active\_shards":0, "relocating\_shards":0, "initializing\_shards":0, "unassigned\_shards":2, "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":0 } ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [November 26, 2017, 10:10am UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/4 "2017-11-26T10:10:14Z")
You do not have any shards assigned, which is why the cluster is red. Check the Elasticsearch logs and/or use the [cluster allocation explain API](https://www.elastic.co/guide/en/elasticsearch/reference/6.0/cluster-allocation-explain.html) to see why the shards have not been allocated. ---
**Author:** ![AskingBoy](https://avatars.discourse-cdn.com/v4/letter/a/2bfe46/32.png) [@AskingBoy](https://discuss.elastic.co/u/AskingBoy)\ **Post date:** [November 26, 2017, 10:26am UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/5 "2017-11-26T10:26:56Z")
{ "index":".kibana", "shard":0, "primary":true, "current\_state":"unassigned", "unassigned\_info":{ "reason":"CLUSTER\_RECOVERED", "at":"2017-11-24T18:42:04.346Z", "last\_allocation\_status":"no\_valid\_shard\_copy" }, "can\_allocate":"no\_valid\_shard\_copy", "allocate\_explanation":"cannot allocate because a previous copy of the primary shard existed but can no longer be found on the nodes in the cluster", "node\_allocation\_decisions":[ { "node\_id":"\_9ho5poZR5Kg143d0QIoHg", "node\_name":"my-node-1", "transport\_address":"xxx.xxx.xxx.0:9300", "node\_decision":"no", "store":{ "found":false } } ] } ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [November 26, 2017, 10:29am UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/6 "2017-11-26T10:29:45Z")
You might try deleting the `.kibana` index and see if that helps, as Kibana will create a new one. ---
**Author:** ![AskingBoy](https://avatars.discourse-cdn.com/v4/letter/a/2bfe46/32.png) [@AskingBoy](https://discuss.elastic.co/u/AskingBoy)\ **Post date:** [November 26, 2017, 10:40am UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/7 "2017-11-26T10:40:48Z")
{ "error":{ "root\_cause":[ { "type":"security\_exception", "reason":"missing authentication token for REST request [/\_cluster/health]", "header":{ "WWW-Authenticate":"Basic realm="security" charset="UTF-8"" } } ], "type":"security\_exception", "reason":"missing authentication token for REST request [/\_cluster/health]", "header":{ "WWW-Authenticate":"Basic realm="security" charset="UTF-8"" } }, "status":401 } this is right after i delete .kibana and restart elasticsearch, then i check health again... ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [November 26, 2017, 10:43am UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/8 "2017-11-26T10:43:10Z")
How have you set up the cluster? How are you securing it? ---
**Author:** ![AskingBoy](https://avatars.discourse-cdn.com/v4/letter/a/2bfe46/32.png) [@AskingBoy](https://discuss.elastic.co/u/AskingBoy)\ **Post date:** [November 26, 2017, 10:45am UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/9 "2017-11-26T10:45:22Z")
i just followed the instruction to install es. hvnt noticed if i set up the cluster yet. Was it with config file elasticsearch.yml? if that, i already hv done that. Otherwise, hv no idea how to do so ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [November 26, 2017, 10:55am UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/10 "2017-11-26T10:55:24Z")
Which guide did you follow? Is Kibana deployed on the same host as Elasticsearch? ---
**Author:** ![AskingBoy](https://avatars.discourse-cdn.com/v4/letter/a/2bfe46/32.png) [@AskingBoy](https://discuss.elastic.co/u/AskingBoy)\ **Post date:** [November 26, 2017, 10:56am UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/11 "2017-11-26T10:56:51Z")
yes sir. this should be the official instruction to follow. ---
**Author:** ![AskingBoy](https://avatars.discourse-cdn.com/v4/letter/a/2bfe46/32.png) [@AskingBoy](https://discuss.elastic.co/u/AskingBoy)\ **Post date:** [November 26, 2017, 10:59am UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/12 "2017-11-26T10:59:21Z")
my ultimate purpose is to be familiar with ELK. ^\_\_\_\_^ ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [December 24, 2017, 10:59am UTC](https://discuss.elastic.co/t/elasticsearch-unable-to-revive-connection/109055/13 "2017-12-24T10:59:38Z")
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