# Logstash-output-syslog **URL:** \ **Category:** Logstash\ **Created:** [April 3, 2018, 2:30am UTC](https://discuss.elastic.co/t/logstash-output-syslog/126490 "2018-04-03T02:30:47Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![mun](https://avatars.discourse-cdn.com/v4/letter/m/35a633/32.png) [@mun](https://discuss.elastic.co/u/mun)\ **Post date:** [April 3, 2018, 2:30am UTC](https://discuss.elastic.co/t/logstash-output-syslog/126490/1 "2018-04-03T02:30:47Z")
Hi, I installed logstash-output-syslog plugin, and once i have done the configuration part, I try to restart but it fails with this error below: my /var/log/logstash/logstash-plain.log [2018-04-03T10:03:12,662][INFO][org.logstash.beats.Server] Starting server on port: 5044 [2018-04-03T10:03:12,824][INFO][logstash.agent] Successfully started Logstash API endpoint {:port=\>9600} [2018-04-03T10:03:13,406][WARN][logstash.agent] stopping pipeline {:id=\>"main"} [2018-04-03T10:03:28,518][WARN][io.netty.channel.AbstractChannel] Force-closing a channel whose registration task was not accepted by an event loop: [id: 0x27c73fbf] java.util.concurrent.RejectedExecutionException: event executor terminated at io.netty.util.concurrent.SingleThreadEventExecutor.reject(SingleThreadEventExecutor.java:840) ~[netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.util.concurrent.SingleThreadEventExecutor.offerTask(SingleThreadEventExecutor.java:342) ~[netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.util.concurrent.SingleThreadEventExecutor.addTask(SingleThreadEventExecutor.java:335) ~[netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:765) ~[netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.AbstractChannel$AbstractUnsafe.register(AbstractChannel.java:475) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.SingleThreadEventLoop.register(SingleThreadEventLoop.java:80) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.SingleThreadEventLoop.register(SingleThreadEventLoop.java:74) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.MultithreadEventLoopGroup.register(MultithreadEventLoopGroup.java:85) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.bootstrap.AbstractBootstrap.initAndRegister(AbstractBootstrap.java:330) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.bootstrap.AbstractBootstrap.doBind(AbstractBootstrap.java:281) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.bootstrap.AbstractBootstrap.bind(AbstractBootstrap.java:277) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.bootstrap.AbstractBootstrap.bind(AbstractBootstrap.java:259) [netty-all-4.1.3.Final.jar:4.1.3.Final] at org.logstash.beats.Server.listen(Server.java:68) [logstash-input-beats-3.1.26.jar:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0\_131] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0\_131] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0\_131] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0\_131] at org.jruby.javasupport.JavaMethod.invokeDirectWithExceptionHandling(JavaMethod.java:436) [?:?] at org.jruby.javasupport.JavaMethod.invokeDirect(JavaMethod.java:300) [?:?] at org.jruby.java.invokers.InstanceMethodInvoker.call(InstanceMethodInvoker.java:35) [?:?] at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:306) [?:?] at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:136) [?:?] at org.jruby.ast.CallNoArgNode.interpret(CallNoArgNode.java:60) [?:?] at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105) [?:?] at org.jruby.ast.BlockNode.interpret(BlockNode.java:71) [?:?] at org.jruby.evaluator.ASTInterpreter.INTERPRET\_METHOD(ASTInterpreter.java:74) [?:?] at org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:182) [?:?] at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:203) [?:?] at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:326) [?:?] at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:170) [?:?] at org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57) [?:?] at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105) [?:?] at org.jruby.ast.BlockNode.interpret(BlockNode.java:71) [?:?] at org.jruby.ast.RescueNode.executeBody(RescueNode.java:221) [?:?] at org.jruby.ast.RescueNode.interpret(RescueNode.java:116) [?:?] at org.jruby.ast.EnsureNode.interpret(EnsureNode.java:96) [?:?] at org.jruby.ast.BeginNode.interpret(BeginNode.java:83) [?:?] at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105) [?:?] at org.jruby.ast.BlockNode.interpret(BlockNode.java:71) [?:?] at org.jruby.evaluator.ASTInterpreter.INTERPRET\_METHOD(ASTInterpreter.java:74) [?:?] at org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:182) [?:?] at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:203) [?:?] at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:326) [?:?] at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:170) [?:?] at org.jruby.ast.FCallOneArgNode.interpret(FCallOneArgNode.java:36) [?:?] at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105) [?:?] at org.jruby.evaluator.ASTInterpreter.INTERPRET\_BLOCK(ASTInterpreter.java:112) [?:?] at org.jruby.runtime.Interpreted19Block.evalBlockBody(Interpreted19Block.java:206) [?:?] at org.jruby.runtime.Interpreted19Block.yield(Interpreted19Block.java:194) [?:?] at org.jruby.runtime.Interpreted19Block.call(Interpreted19Block.java:125) [?:?] at org.jruby.runtime.Block.call(Block.java:101) [?:?] at org.jruby.RubyProc.call(RubyProc.java:300) [?:?] at org.jruby.RubyProc.call(RubyProc.java:230) [?:?] at org.jruby.internal.runtime.RubyRunnable.run(RubyRunnable.java:103) [?:?] at java.lang.Thread.run(Thread.java:748) [?:1.8.0\_131] [2018-04-03T10:03:32,779][ERROR][io.netty.util.concurrent.DefaultPromise.rejectedExecution] Failed to submit a listener notification task. Event loop shut down? java.util.concurrent.RejectedExecutionException: event executor terminated Anyone can help me on this? Thanks. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [May 1, 2018, 2:30am UTC](https://discuss.elastic.co/t/logstash-output-syslog/126490/2 "2018-05-01T02:30:49Z")
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