Nagios Support Forum

Hi!
After "org.elasticsearch.client.transport.NoNodeAvailableException" the syslog didn't save the logs.
We have just one Nagios Syslog Server (not in a cluster).
All the service are UP.

When I restart the logstash service, the syslog begin to save logs again.
This happend to my several times (1 time per week arpox).

Append the logstash log complente line:
{
: timestamp = > "2017-04-06T03:54:23.373000-0300",
: message = > "Failed to flush outgoing items",
: outgoing_count = > 6,
: exception = > org.elasticsearch.client.transport.NoNodeAvailableException : None of the configured nodes are available : [],
: backtrace = > ["org.elasticsearch.client.transport.TransportClientNodesService.ensureNodesAreAvailable(org/elasticsearch/client/transport/TransportClientNodesService.java:279)", "org.elasticsearch.client.transport.TransportClientNodesService.execute(org/elasticsearch/client/transport/TransportClientNodesService.java:198)", "org.elasticsearch.client.transport.support.InternalTransportClient.execute(org/elasticsearch/client/transport/support/InternalTransportClient.java:106)", "org.elasticsearch.client.support.AbstractClient.bulk(org/elasticsearch/client/support/AbstractClient.java:163)", "org.elasticsearch.client.transport.TransportClient.bulk(org/elasticsearch/client/transport/TransportClient.java:356)", "org.elasticsearch.action.bulk.BulkRequestBuilder.doExecute(org/elasticsearch/action/bulk/BulkRequestBuilder.java:164)", "org.elasticsearch.action.ActionRequestBuilder.execute(org/elasticsearch/action/ActionRequestBuilder.java:91)", "org.elasticsearch.action.ActionRequestBuilder.execute(org/elasticsearch/action/ActionRequestBuilder.java:65)", "java.lang.reflect.Method.invoke(java/lang/reflect/Method.java:606)", "LogStash::Outputs::Elasticsearch::Protocols::NodeClient.bulk(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-0.2.8-java/lib/logstash/outputs/elasticsearch/protocol.rb:224)", "LogStash::Outputs::Elasticsearch::Protocols::NodeClient.bulk(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-0.2.8-java/lib/logstash/outputs/elasticsearch/protocol.rb:224)", "LogStash::Outputs::ElasticSearch.submit(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-0.2.8-java/lib/logstash/outputs/elasticsearch.rb:466)", "LogStash::Outputs::ElasticSearch.submit(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-0.2.8-java/lib/logstash/outputs/elasticsearch.rb:466)", "LogStash::Outputs::ElasticSearch.submit(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-0.2.8-java/lib/logstash/outputs/elasticsearch.rb:465)", "LogStash::Outputs::ElasticSearch.submit(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-0.2.8-java/lib/logstash/outputs/elasticsearch.rb:465)", "LogStash::Outputs::ElasticSearch.flush(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-0.2.8-java/lib/logstash/outputs/elasticsearch.rb:490)", "LogStash::Outputs::ElasticSearch.flush(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-0.2.8-java/lib/logstash/outputs/elasticsearch.rb:490)", "LogStash::Outputs::ElasticSearch.flush(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-0.2.8-java/lib/logstash/outputs/elasticsearch.rb:489)", "LogStash::Outputs::ElasticSearch.flush(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/logstash-output-elasticsearch-0.2.8-java/lib/logstash/outputs/elasticsearch.rb:489)", "Stud::Buffer.buffer_flush(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.19/lib/stud/buffer.rb:219)", "Stud::Buffer.buffer_flush(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.19/lib/stud/buffer.rb:219)", "org.jruby.RubyHash.each(org/jruby/RubyHash.java:1341)", "Stud::Buffer.buffer_flush(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.19/lib/stud/buffer.rb:216)", "Stud::Buffer.buffer_flush(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.19/lib/stud/buffer.rb:216)", "Stud::Buffer.buffer_flush(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.19/lib/stud/buffer.rb:193)", "Stud::Buffer.buffer_flush(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.19/lib/stud/buffer.rb:193)", "RUBY.buffer_initialize(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.19/lib/stud/buffer.rb:112)", "org.jruby.RubyKernel.loop(org/jruby/RubyKernel.java:1511)", "RUBY.buffer_initialize(/usr/local/nagioslogserver/logstash/vendor/bundle/jruby/1.9/gems/stud-0.0.19/lib/stud/buffer.rb:110)", "java.lang.Thread.run(java/lang/Thread.java:745)"],
: level = > : warn
}

Can you share the contents of your Elasticsearch logs? This command should put them all in the /tmp/43268_1.tar file:

Uploaded!
In the log appears a localhost fail. This problem was fixed.

THKS!

check your hard drives it looks like you're running low space.

Thanks for sharing your solution!

As @tacolover101 pointed out, you might want to free up some space on this machine's disk. I'm seeing a lot of this in the Elasticsearch logs: Otherwise, you can refer to the "Increase The Low Watermark" section of this article:
https://support.nagios.com/kb/article.php?id=469