# Java-Error after installing a new Logstash-server **URL:** \ **Category:** Logstash\ **Created:** [September 29, 2017, 11:42am UTC](https://discuss.elastic.co/t/java-error-after-installing-a-new-logstash-server/102253 "2017-09-29T11:42:42Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![JR\_FFM](https://avatars.discourse-cdn.com/v4/letter/j/d26b3c/32.png) [@JR\_FFM](https://discuss.elastic.co/u/JR_FFM)\ **Post date:** [September 29, 2017, 11:42am UTC](https://discuss.elastic.co/t/java-error-after-installing-a-new-logstash-server/102253/1 "2017-09-29T11:42:42Z")
Hello, today I've installed a new debian-server with logstash 5.6.2 out of the elasticsearch-apt-source. When I start logstash with debugging-logging, I get following error-message in /var/log/logstash/logstash-plain.log (because of the character-limitation I have shortened the output): [2017-09-29T13:27:33,926][ERROR][logstash.pipeline] Error registering plugin {:plugin=\>"#\"HttpClientBuilder not found in packages org.apache.http.client.methods, org.apache.http.client.entity, org.apache.http.client.config, org.apache.http.config, org.apache.http.conn.socket, org.apache.http.impl, org.apache.http.impl.client, org.apache.http.impl.conn, org.apache.http.impl.auth, org.apache.http.entity, org.apache.http.message, org.apache.http.params, org.apache.http.protocol, org.apache.http.auth, java.util.concurrent, org.apache.http.client.protocol, org.apache.http.conn.ssl, java.security.cert, java.security.spec, java.security, org.apache.http.client.utils; last error: cannot load Java class org.apache.http.client.utils.HttpClientBuilder"} [2017-09-29T13:27:33,934][ERROR][logstash.agent] Pipeline aborted due to error {:exception=\>#\"main"} [2017-09-29T13:27:46,500][ERROR][logstash.plugins.registry] Problems loading a plugin with {:type=\>"input", :name=\>"beats", :path=\>"logstash/inputs/beats", :error\_message=\>"cannot load Java class org.logstash.beats.MessageListener", :error\_class=\>NameError, ......"/usr/share/logstash/lib/bootstrap/environment.rb:71:in `(root)'"]} [2017-09-29T13:27:46,511][ERROR][logstash.agent] Cannot create pipeline {:reason=>"Couldn't find any input plugin named 'beats'. Are you sure this is correct? Trying to load the beats input plugin resulted in this error: Problems loading the requested plugin named beats of type input. Error: NameError cannot load Java class org.logstash.beats.MessageListener"} [2017-09-29T13:28:05,405][ERROR][logstash.pipeline] Error registering plugin {:plugin=>"#..., :error=>"cannot load Java class org.apache.http.ConnectionClosedException"} [2017-09-29T13:28:05,415][ERROR][logstash.agent] Pipeline aborted due to error {:exception=>#, :backtrace=>["org/jruby/javasupport/JavaClass.java:204:in`for\_name'", ...... "/usr/share/logstash/logstash-core/lib/logstash/agent.rb:398:in `start\_pipeline'"]} [2017-09-29T13:28:08,468][WARN][logstash.agent] stopping pipeline {:id=\>"main"} [2017-09-29T13:28:17,556][INFO][logstash.modules.scaffold] Initializing module {:module\_name=\>"netflow", :directory=\>"/usr/share/logstash/modules/netflow/configuration"} [2017-09-29T13:28:17,559][INFO][logstash.modules.scaffold] Initializing module {:module\_name=\>"fb\_apache", :directory=\>"/usr/share/logstash/modules/fb\_apache/configuration"} [2017-09-29T13:28:26,828][INFO][logstash.modules.scaffold] Initializing module {:module\_name=\>"netflow", :directory=\>"/usr/share/logstash/modules/netflow/configuration"} [2017-09-29T13:28:26,831][INFO][logstash.modules.scaffold] Initializing module {:module\_name=\>"fb\_apache", :directory=\>"/usr/share/logstash/modules/fb\_apache/configuration"} And here is the winlogbeat-logfile-output of one of my Winlogbeat-server which tries to connect to the Logstash-Server: 2017-09-29T13:29:30+02:00 ERR Connecting error publishing events (retrying): dial tcp yyy.yyy.yyy.yyy:5044: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. 2017-09-29T13:29:53+02:00 INFO Non-zero metrics in the last 30s: uptime={"server\_time":"2017-09-29T11:29:53.9154549Z","start\_time":"2017-09-29T09:56:53.9337395Z","uptime":"1h32m59.9817154s","uptime\_ms":"5579981715"} 2017-09-29T13:30:23+02:00 INFO Non-zero metrics in the last 30s: uptime={"server\_time":"2017-09-29T11:30:23.9160644Z","start\_time":"2017-09-29T09:56:53.9337395Z","uptime":"1h33m29.9823249s","uptime\_ms":"5609982324"} Network-connection between the logstash- and winlogbeat-server is configured properly. Furthermore I can see the connections at the logstash-server at the output from the command "netstat -a". Can anyone tell me what I have to configure so the winlogbeat-data is processed correctly by the logstash-system? THX! ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 27, 2017, 11:42am UTC](https://discuss.elastic.co/t/java-error-after-installing-a-new-logstash-server/102253/2 "2017-10-27T11:42:48Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.