Logstash error

I'm trying o use with elastic and got this error:

    at org.elasticsearch.discovery.zen.ZenDiscovery$JoinThreadControl$1.run(ZenDiscovery.java:1384)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

Caused by: org.elasticsearch.transport.NodeNotConnectedException: [][inet[localhost/127.0.0.1:9300]] Node not connected
at org.elasticsearch.transport.netty.NettyTransport.nodeChannel(NettyTransport.java:964)
at org.elasticsearch.transport.netty.NettyTransport.sendRequest(NettyTransport.java:656)
at org.elasticsearch.transport.TransportService.sendRequest(TransportService.java:276)
... 12 more

jul 24, 2015 10:50:04 AM org.elasticsearch.discovery.zen.ping.unicast.UnicastZenPing$4 handleException
ADVERT╩NCIA: [logstash-LumeraEbner-8640-11622] failed to send ping to [[#zen_unicast_1#][LumeraEbner][inet[localhost/127.0.0.1:9300]]]
org.elasticsearch.transport.SendRequestTransportException: [][inet[localhost/127.0.0.1:9300]][internal:discovery/zen/unicast_gte_1_4]
at org.elasticsearch.transport.TransportService.sendRequest(TransportService.java:286)
at org.elasticsearch.discovery.zen.ping.unicast.UnicastZenPing.sendPingRequestTo14NodeWithFallback(UnicastZenPing.java:431)
at org.elasticsearch.discovery.zen.ping.unicast.UnicastZenPing.sendPings(UnicastZenPing.java:413)
at org.elasticsearch.discovery.zen.ping.unicast.UnicastZenPing.ping(UnicastZenPing.java:219)
at org.elasticsearch.discovery.zen.ping.ZenPingService.ping(ZenPingService.java:146)
at org.elasticsearch.discovery.zen.ping.ZenPingService.pingAndWait(ZenPingService.java:124)
at org.elasticsearch.discovery.zen.ZenDiscovery.findMaster(ZenDiscovery.java:1007)
at org.elasticsearch.discovery.zen.ZenDiscovery.innerJoinCluster(ZenDiscovery.java:361)
at org.elasticsearch.discovery.zen.ZenDiscovery.access$6100(ZenDiscovery.java:86)
at org.elasticsearch.discovery.zen.ZenDiscovery$JoinThreadControl$1.run(ZenDiscovery.java:1384)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.elasticsearch.transport.NodeNotConnectedException: [][inet[localhost/127.0.0.1:9300]] Node not connected
at org.elasticsearch.transport.netty.NettyTransport.nodeChannel(NettyTransport.java:964)
at org.elasticsearch.transport.netty.NettyTransport.sendRequest(NettyTransport.java:656)
at org.elasticsearch.transport.TransportService.sendRequest(TransportService.java:276)
... 12 more

Failed to install template: waited for [30s] {:level=>:error}
Logstash startup completed

Logstash cannot contact Elasticsearch, I'd make sure your ES instance is up.