# Logstash-tcp-input having unrecoverable error when logstash is used in systemd **URL:** \ **Category:** Logstash\ **Created:** [March 12, 2021, 11:53am UTC](https://discuss.elastic.co/t/logstash-tcp-input-having-unrecoverable-error-when-logstash-is-used-in-systemd/267079 "2021-03-12T11:53:53Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Arvind\_Ks](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/arvind_ks/32/77463_2.png) [@Arvind\_Ks](https://discuss.elastic.co/u/Arvind_Ks)\ **Post date:** [March 12, 2021, 11:53am UTC](https://discuss.elastic.co/t/logstash-tcp-input-having-unrecoverable-error-when-logstash-is-used-in-systemd/267079/1 "2021-03-12T11:53:53Z")
Hi Team, I am trying to use tcp plugin in logstash. When i run the config file related to this using logstash cli command , i am able to start it without any issues. However when i try starting it as a systemd service i am getting below error. There are no port conflicts , i've verified that. This issue is somewhat similar to `https://discuss.elastic.co/t/logstash-http-input-having-unrecoverable-error-when-logstash-is-used-in-systemd/199161/5` . While running as systemd service , logstash starts but not tcp port [ash@ logstash] netstat -tnpl | egrep "9600|514" (No info could be read for "-p": geteuid()=5842 but you should be root.) tcp6 0 0 :::9600 :::\* LISTEN - [ash@logstash] Error [2021-03-12T03:47:15,698][ERROR][logstash.javapipeline] A plugin had an unrecoverable error. Will restart this plugin. Pipeline\_id:network-logs Plugin: \"syslog", port=\>514, id=\>"1a47f26295ff147be386caec8bb103df7d4141d6fc554c06d6505431672abb97", enable\_metric=\>true, codec=\>\"line\_e8d6b675-53de-4d2c-9dc1-c14fcae3d0d5", enable\_metric=\>true, charset=\>"UTF-8", delimiter=\>"\n"\>, host=\>"0.0.0.0", mode=\>"server", proxy\_protocol=\>false, ssl\_enable=\>false, ssl\_verify=\>true, ssl\_key\_passphrase=\>, tcp\_keep\_alive=\>false, dns\_reverse\_lookup\_enabled=\>true\> Error: event executor terminated Exception: Java::JavaUtilConcurrent::RejectedExecutionException Stack: io.netty.util.concurrent.SingleThreadEventExecutor.reject(io/netty/util/concurrent/SingleThreadEventExecutor.java:821) io.netty.util.concurrent.SingleThreadEventExecutor.offerTask(io/netty/util/concurrent/SingleThreadEventExecutor.java:327) io.netty.util.concurrent.SingleThreadEventExecutor.addTask(io/netty/util/concurrent/SingleThreadEventExecutor.java:320) io.netty.util.concurrent.SingleThreadEventExecutor.execute(io/netty/util/concurrent/SingleThreadEventExecutor.java:746) io.netty.channel.AbstractChannel$AbstractUnsafe.register(io/netty/channel/AbstractChannel.java:479) io.netty.channel.SingleThreadEventLoop.register(io/netty/channel/SingleThreadEventLoop.java:80) [2021-03-12T03:41:38,595][WARN][io.netty.channel.AbstractChannel] Force-closing a channel whose registration task was not accepted by an event loop: [id: 0xd45cde14] java.util.concurrent.RejectedExecutionException: event executor terminated at io.netty.util.concurrent.SingleThreadEventExecutor.reject(SingleThreadEventExecutor.java:821) ~[logstash-input-tcp-6.0.5.jar:?] at io.netty.util.concurrent.SingleThreadEventExecutor.offerTask(SingleThreadEventExecutor.java:327) ~[logstash-input-tcp-6.0.5.jar:?] at io.netty.util.concurrent.SingleThreadEventExecutor.addTask(SingleThreadEventExecutor.java:320) ~[logstash-input-tcp-6.0.5.jar:?] at io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:746) ~[logstash-input-tcp-6.0.5.jar:?] Config File: more /etc/logstash/conf.d/network-logs.conf input { tcp { port =\> 514 type =\> syslog } } But if i run it from CLI using logstash command, there are no issues. Plz help sudo /usr/share/logstash/bin/logstash -f /etc/logstash/conf.d/network-logs.conf Thread.exclusive is deprecated, use Thread::Mutex WARNING: Could not find logstash.yml which is typically located in $LS\_HOME/config or /etc/logstash. You can specify the path using --path.settings. Continuing using the defaults Could not find log4j2 configuration at path /usr/share/logstash/config/log4j2.properties. Using default config which logs errors to the console [WARN] 2021-03-12 03:52:09.760 [LogStash::Runner] multilocal - Ignoring the 'pipelines.yml' file because modules or command line options are specified [INFO] 2021-03-12 03:52:09.773 [LogStash::Runner] runner - Starting Logstash {"logstash.version"=\>"7.3.0"} [INFO] 2021-03-12 03:52:14.105 [[main]-pipeline-manager] javapipeline - Pipeline started {"pipeline.id"=\>"main"} [INFO] 2021-03-12 03:52:14.130 [[main]\"0.0.0.0:514", :ssl\_enable=\>"false"} [INFO] 2021-03-12 03:52:14.229 [Ruby-0-Thread-2: /usr/share/logstash/lib/bootstrap/environment.rb:6] agent - Pipelines running {:count=\>1, :running\_pipelines=\>[:main], :non\_running\_pipelines=\>} [INFO] 2021-03-12 03:52:14.548 [Api Webserver] agent - Successfully started Logstash API endpoint {:port=\>9600} ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [April 9, 2021, 11:53am UTC](https://discuss.elastic.co/t/logstash-tcp-input-having-unrecoverable-error-when-logstash-is-used-in-systemd/267079/2 "2021-04-09T11:53:55Z")
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