# My elasticsearch doesn't work **URL:** \ **Category:** Elasticsearch\ **Created:** [October 26, 2015, 4:05pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997 "2015-10-26T16:05:41Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![billy6](https://avatars.discourse-cdn.com/v4/letter/b/cab0a1/32.png) [@billy6](https://discuss.elastic.co/u/billy6)\ **Post date:** [October 26, 2015, 4:05pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/1 "2015-10-26T16:05:41Z")
Hello, this morning I have seen that suddenly kibana didn't represent any message. I have seen that the problem is in elasticsearch but the cluster health is yellow (it seems to be OK), however everytime I want to send a message I'm not able to see it, I have to restart the service to start seeing the messages. What could I do? ---
**Author:** ![lwintergerst](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lwintergerst/32/18164_2.png) [@lwintergerst](https://discuss.elastic.co/u/lwintergerst)\ **Post date:** [October 26, 2015, 4:12pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/2 "2015-10-26T16:12:08Z")
Can you acces any kind of ES API? for example these: $ curl -XGET '[http://localhost:9200/\_cluster/health?pretty=true](http://localhost:9200/_cluster/health?pretty=true)' $ curl -XGET '[http://localhost:9200](http://localhost:9200)' ---
**Author:** ![billy6](https://avatars.discourse-cdn.com/v4/letter/b/cab0a1/32.png) [@billy6](https://discuss.elastic.co/u/billy6)\ **Post date:** [October 26, 2015, 4:14pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/3 "2015-10-26T16:14:10Z")
Yes, this is what I get: { "cluster\_name" : "logstash", "status" : "yellow", "timed\_out" : false, "number\_of\_nodes" : 2, "number\_of\_data\_nodes" : 1, "active\_primary\_shards" : 221, "active\_shards" : 221, "relocating\_shards" : 0, "initializing\_shards" : 0, "unassigned\_shards" : 221, "delayed\_unassigned\_shards" : 0, "number\_of\_pending\_tasks" : 0, "number\_of\_in\_flight\_fetch" : 0 } ---
**Author:** ![lwintergerst](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lwintergerst/32/18164_2.png) [@lwintergerst](https://discuss.elastic.co/u/lwintergerst)\ **Post date:** [October 26, 2015, 4:20pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/4 "2015-10-26T16:20:25Z")
Can you also give me the output of just $ curl -XGET '[http://localhost:9200](http://localhost:9200)'? Did you restart it already? Or is it still in this odd state? ---
**Author:** ![billy6](https://avatars.discourse-cdn.com/v4/letter/b/cab0a1/32.png) [@billy6](https://discuss.elastic.co/u/billy6)\ **Post date:** [October 26, 2015, 4:21pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/5 "2015-10-26T16:21:29Z")
{ "status" : 200, "name" : "Loggy", "cluster\_name" : "logstash", "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" } ---
**Author:** ![lwintergerst](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lwintergerst/32/18164_2.png) [@lwintergerst](https://discuss.elastic.co/u/lwintergerst)\ **Post date:** [October 26, 2015, 4:29pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/6 "2015-10-26T16:29:09Z")
Okay, this looks as good as it can get.. What exactly do you mean when you say "everytime I want to send a message I'm not able to see it"? ---
**Author:** ![billy6](https://avatars.discourse-cdn.com/v4/letter/b/cab0a1/32.png) [@billy6](https://discuss.elastic.co/u/billy6)\ **Post date:** [October 26, 2015, 4:32pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/7 "2015-10-26T16:32:11Z")
I sent UDP messages to logstash (port 30000) but I'm not able to see them in Kibana. I tried to delete some indexes I'm not using from EShead and the ack is false. What can be happening? ---
**Author:** ![lwintergerst](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lwintergerst/32/18164_2.png) [@lwintergerst](https://discuss.elastic.co/u/lwintergerst)\ **Post date:** [October 26, 2015, 4:41pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/8 "2015-10-26T16:41:59Z")
Oh, okay. Can you set logging to debug and check the logs located at $ES-HOME/logs ? PUT /\_cluster/settings {"transient":{"logger.\_root":"DEBUG"}} ---
**Author:** ![billy6](https://avatars.discourse-cdn.com/v4/letter/b/cab0a1/32.png) [@billy6](https://discuss.elastic.co/u/billy6)\ **Post date:** [October 26, 2015, 5:11pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/9 "2015-10-26T17:11:13Z")
I think that this is the problem: [2015-10-26 11:36:26,748][WARN][index.engine] [Loggy] [logstash-syslog-2015.10.26][0] failed engine [out of memory (source: [maybe\_merge])] java.lang.OutOfMemoryError: unable to create new native thread at java.lang.Thread.start0(Native Method) at java.lang.Thread.start(Thread.java:714) at org.apache.lucene.index.ConcurrentMergeScheduler.merge(ConcurrentMergeScheduler.java:391) at org.elasticsearch.index.merge.EnableMergeScheduler.merge(EnableMergeScheduler.java:50) at org.apache.lucene.index.IndexWriter.maybeMerge(IndexWriter.java:1985) at org.apache.lucene.index.IndexWriter.maybeMerge(IndexWriter.java:1979) at org.elasticsearch.index.engine.InternalEngine.maybeMerge(InternalEngine.java:778) at org.elasticsearch.index.shard.IndexShard$EngineMerger$1.run(IndexShard.java:1241) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [October 27, 2015, 12:58am UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/10 "2015-10-27T00:58:27Z")
> [@billy6](#): > > java.lang.OutOfMemoryError: unable to create new native thread Yeah, you need to check your heap size and, ideally, increase it. ---
**Author:** ![billy6](https://avatars.discourse-cdn.com/v4/letter/b/cab0a1/32.png) [@billy6](https://discuss.elastic.co/u/billy6)\ **Post date:** [October 27, 2015, 1:28pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/11 "2015-10-27T13:28:05Z")
I had 3 GB, but with the previous version (elasticsearch 1.1.1 and Kibana4) we had only 1,5 GB for ES\_MAX\_MEM and it worked fine. What could be the reason? thank you ---
**Author:** ![billy6](https://avatars.discourse-cdn.com/v4/letter/b/cab0a1/32.png) [@billy6](https://discuss.elastic.co/u/billy6)\ **Post date:** [October 27, 2015, 1:51pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/12 "2015-10-27T13:51:51Z")
I have increased ES\_HEAP\_SIZE=4g but I have tried sending 100 messages and it get stuck...(same problem) How could this be possible? ---
**Author:** ![lwintergerst](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lwintergerst/32/18164_2.png) [@lwintergerst](https://discuss.elastic.co/u/lwintergerst)\ **Post date:** [October 27, 2015, 5:20pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/13 "2015-10-27T17:20:21Z")
How much memory does your host machine have? ---
**Author:** ![billy6](https://avatars.discourse-cdn.com/v4/letter/b/cab0a1/32.png) [@billy6](https://discuss.elastic.co/u/billy6)\ **Post date:** [October 27, 2015, 5:21pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/14 "2015-10-27T17:21:06Z")
8GB, for this reason I can't increase it more. ---
**Author:** ![lwintergerst](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lwintergerst/32/18164_2.png) [@lwintergerst](https://discuss.elastic.co/u/lwintergerst)\ **Post date:** [October 27, 2015, 5:23pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/15 "2015-10-27T17:23:09Z")
Can you tell me a little more about the data in your ES? How many documents, how much total in GB, how many indices, what kind of messages you are trying to send ---
**Author:** ![billy6](https://avatars.discourse-cdn.com/v4/letter/b/cab0a1/32.png) [@billy6](https://discuss.elastic.co/u/billy6)\ **Post date:** [October 27, 2015, 5:29pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/16 "2015-10-27T17:29:42Z")
I have 44 indexes, here I have a copy from the elasticsearch head ![](https://us1.discourse-cdn.com/elastic/original/2X/0/0bf76b6b54c6fcef0ab8765f97e9167415aa4b9a.PNG) I made a migration from another machine and in order to have the same indexes I moved the directory /var/lib/elasticsearch/NAMEOFtHECLUSTER to another directory and there I have now the past indexes (from the other machine) and the new indexes... ---
**Author:** ![lwintergerst](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lwintergerst/32/18164_2.png) [@lwintergerst](https://discuss.elastic.co/u/lwintergerst)\ **Post date:** [October 27, 2015, 5:48pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/17 "2015-10-27T17:48:15Z")
This looks fine. Should not be a problem 😕 So you still get the outofMemory if you try to index new data? ---
**Author:** ![billy6](https://avatars.discourse-cdn.com/v4/letter/b/cab0a1/32.png) [@billy6](https://discuss.elastic.co/u/billy6)\ **Post date:** [October 27, 2015, 5:52pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/18 "2015-10-27T17:52:44Z")
yes, when I send a big amount of data. ---
**Author:** ![lwintergerst](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lwintergerst/32/18164_2.png) [@lwintergerst](https://discuss.elastic.co/u/lwintergerst)\ **Post date:** [October 27, 2015, 5:53pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/19 "2015-10-27T17:53:42Z")
I dont know what else to do. Im sorry. Maybe @warkolm can help you out ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [October 27, 2015, 9:41pm UTC](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997/20 "2015-10-27T21:41:18Z")
You should reduce your shard count, that's likely causing the heap pressure. [Next page](https://discuss.elastic.co/t/my-elasticsearch-doesnt-work/32997.md?page=2)