# Logstash error instability \[logstash.inputs.udp\]

**URL:** <https://discuss.elastic.co/t/logstash-error-instability-logstash-inputs-udp/246944>\
**Category:** Logstash\
**Created:** [August 31, 2020, 11:41am UTC](https://discuss.elastic.co/t/logstash-error-instability-logstash-inputs-udp/246944 "2020-08-31T11:41:33Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![bluelight](https://avatars.discourse-cdn.com/v4/letter/b/4af34b/32.png) [@bluelight](https://discuss.elastic.co/u/bluelight)\
**Post date:** [August 31, 2020, 11:41am UTC](https://discuss.elastic.co/t/logstash-error-instability-logstash-inputs-udp/246944/1 "2020-08-31T11:41:33Z")

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Hello Folks,  
I face many problems really big problems I was receiving logs fine before 2months ago. there is no stability in logstash it's doing self crashing. and I'm no more receive TCP Packets only UDP packets.

Here is my journalctl logs of logstash service:

```auto
août 31 13:34:40 Trait1 logstash[30947]: 2020-08-31 13:34:40,393 [main]<tcp ERROR Recovering from StringBuilderEncoder.encode('[2020-08-31T13:34:40,363][INFO][logstash.inputs.tcp][main] Starting tcp input listener {:address=>"0.0.0.0:1514", :ssl_enable=>"false"}
août 31 13:34:40 Trait1 logstash[30947]: 2020-08-31 13:34:40,406 [main]<tcp ERROR Recovering from StringBuilderEncoder.encode('[2020-08-31T13:34:40,371][INFO][logstash.inputs.tcp][main] Starting tcp input listener {:address=>"0.0.0.0:10514", :ssl_enable=>"false"}
août 31 13:34:40 Trait1 logstash[30947]: 2020-08-31 13:34:40,528 Agent thread ERROR Recovering from StringBuilderEncoder.encode('[2020-08-31T13:34:40,503][INFO][logstash.agent] Pipelines running {:count=>1, :running_pipelines=>[:main], :non_running_pipelines=>[]}
août 31 13:34:40 Trait1 logstash[30947]: [2020-08-31T13:34:40,542][ERROR][logstash.inputs.udp][main] UDP listener died {:exception=>#<SocketError: bind: name or service not known>, :backtrace=>["org/jruby/ext/socket/RubyUDPSocket.java:216:in `bind'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-input-udp-3.3.4/lib/logstash/inputs/udp.rb:116:in `udp_listener'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-input-udp-3.3.4/lib/logstash/inputs/udp.rb:68:in `run'", "/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:322:in `inputworker'", "/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:314:in `block in start_input'"]}
août 31 13:34:40 Trait1 logstash[30947]: 2020-08-31 13:34:40,545 [main]<udp ERROR Recovering from StringBuilderEncoder.encode('[2020-08-31T13:34:40,542][ERROR][logstash.inputs.udp][main] UDP listener died {:exception=>#<SocketError: bind: name or service not known>, :backtrace=>["org/jruby/ext/socket/RubyUDPSocket.java:216:in `bind'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-input-udp-3.3.4/lib/logstash/inputs/udp.rb:116:in `udp_listener'", "/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-input-udp-3.3.4/lib/logstash/inputs/udp.rb:68:in `run'", "/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:322:in `inputworker'", "/usr/share/logstash/logstash-core/lib/logstash/java_pipeline.rb:314:in `block in start_input'"]}
août 31 13:34:40 Trait1 logstash[30947]: [2020-08-31T13:34:40,548][ERROR][logstash.javapipeline][main] A plugin had an unrecoverable error. Will restart this plugin.
août 31 13:34:40 Trait1 logstash[30947]: 2020-08-31 13:34:40,554 [main]<tcp ERROR Recovering from StringBuilderEncoder.encode('[2020-08-31T13:34:40,548][ERROR][logstash.javapipeline][main] A plugin had an unrecoverable error. Will restart this plugin.

```

I hope this will be helpful to get only an idea of what I'm facing.

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<div class="post-metadata">

**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [August 31, 2020, 3:05pm UTC](https://discuss.elastic.co/t/logstash-error-instability-logstash-inputs-udp/246944/2 "2020-08-31T15:05:46Z")

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> [@bluelight](#):
>
> `exception=>#<SocketError: bind: name or service not known>`

That suggests that you have configured the udp input to listen on a hostname that does not exist.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [September 28, 2020, 3:06pm UTC](https://discuss.elastic.co/t/logstash-error-instability-logstash-inputs-udp/246944/3 "2020-09-28T15:06:03Z")

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