# LogStash won't bind to any port
**URL:** https://discuss.elastic.co/t/logstash-wont-bind-to-any-port/110886
**Category:** Logstash
**Created:** [December 8, 2017, 7:26pm UTC](https://discuss.elastic.co/t/logstash-wont-bind-to-any-port/110886 "2017-12-08T19:26:03Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@reswob](https://discuss.elastic.co/u/reswob)
#### Post date: [December 8, 2017, 7:26pm UTC](https://discuss.elastic.co/t/logstash-wont-bind-to-any-port/110886/1 "2017-12-08T19:26:03Z")
I'm running LS 5.4 on Ubuntu 16.04 LTS
It's been running happily tailing locally written bro files for several months. I stopped it to do some troubleshooting and testing to add some functionality, but I'm having trouble.
Currently, bro is stopped AND the LS service is stopped. I'm using the following LS conf file:
```
input {
udp {
port => 9999
}
}
output {
stdout { codec => rubydebug }
}
```
I then run the following command to start LS:
`/usr/share/logstash/bin/logstash -f test.conf`
I get the following (after a LONG wait, over 3 minutes for the java machine to start):
> 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
Then nothing. Nothing is listening on port 9999 and if I send anything to that port, I don't get any output.
Nothing is being written to the log... and when I mean nothing, I mean NOTHING.
I tried with the following command:
`/usr/share/logstash/bin/logstash -l /etc/logstash/testconf/logtest.log -f test.conf`
But that log was never written.
I tried with the modification of
```
input {
stdin { }
udp {
port => 9999
}
}
output {
stdout { codec => rubydebug }
}
```
and indeed I got:
> 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
> The stdin plugin is now waiting for input:
but I still never got anything for the udp port.
All the googles have found have answers for different errors, but with no errors and no feedback, I don't have any idea of what could be wrong. Any suggestions?
Why isn't this logging?
Why doesn't LS bind and connect to the port?
Thanks.
---
### Author:  [@reswob](https://discuss.elastic.co/u/reswob)
#### Post date: [December 8, 2017, 8:10pm UTC](https://discuss.elastic.co/t/logstash-wont-bind-to-any-port/110886/2 "2017-12-08T20:10:07Z")
OK, I rebooted, and started over.
This time I used this command line to start:
`/usr/share/logstash/bin/logstash -f test.conf --path.settings /etc/logstash/`
And I got the following in the log:
> [2017-12-08T20:01:59,279][INFO][logstash.modules.scaffold] Initializing module {:module\_name=\>"fb\_apache", :directory=\>"/usr/share/logstash/modules/fb\_apache/configuration"}
> [2017-12-08T20:01:59,379][INFO][logstash.modules.scaffold] Initializing module {:module\_name=\>"netflow", :directory=\>"/usr/share/logstash/modules/netflow/configuration"}
> [2017-12-08T20:02:01,025][INFO][logstash.pipeline] Starting pipeline {"id"=\>"main", "pipeline.workers"=\>1, "pipeline.batch.size"=\>125, "pipeline.batch.delay"=\>5, "pipeline.max\_inflight"=\>125}
> [2017-12-08T20:02:01,075][INFO][logstash.pipeline] Pipeline main started
> [2017-12-08T20:02:01,099][INFO][logstash.inputs.udp] Starting UDP listener {:address=\>"0.0.0.0:9999"}
> [2017-12-08T20:02:01,184][INFO][logstash.inputs.udp] UDP listener started {:address=\>"0.0.0.0:9999", :receive\_buffer\_bytes=\>"106496", :queue\_size=\>"2000"}
> [2017-12-08T20:02:01,473][INFO][logstash.agent] Successfully started Logstash API endpoint {:port=\>9600}
However, when I send data to port 9999, I still get no output. I DO get output with stdin.
```
The stdin plugin is now waiting for input:
l;kkjl;kj
{
"@version" => "1",
"host" => "server-01",
"@timestamp" => 2017-12-08T20:03:15.451Z,
"message" => "l;kkjl;kj"
}
```
very frustrating...
---
### Author:  [@reswob](https://discuss.elastic.co/u/reswob)
#### Post date: [December 8, 2017, 9:57pm UTC](https://discuss.elastic.co/t/logstash-wont-bind-to-any-port/110886/3 "2017-12-08T21:57:12Z")
Final info for the day: Running as the service the conf file works fine (service logstash start) but not from the command line. What's the difference I need to know?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [January 5, 2018, 9:57pm UTC](https://discuss.elastic.co/t/logstash-wont-bind-to-any-port/110886/4 "2018-01-05T21:57:21Z")
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