# Logstash output file plugin adds automatically hostname
**URL:** https://discuss.elastic.co/t/logstash-output-file-plugin-adds-automatically-hostname/306113
**Category:** Logstash
**Created:** [June 1, 2022, 10:48am UTC](https://discuss.elastic.co/t/logstash-output-file-plugin-adds-automatically-hostname/306113 "2022-06-01T10:48:18Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@tusharnemade](https://discuss.elastic.co/u/tusharnemade)
#### Post date: [June 1, 2022, 10:48am UTC](https://discuss.elastic.co/t/logstash-output-file-plugin-adds-automatically-hostname/306113/1 "2022-06-01T10:48:18Z")
Hello
I am using Logstash version 7.8.0.
I am having my configuration as input is logstash-plain.log file which is its logfile.
It does not contain hostname , on its line, while logstash when processing data to output file , it adds hostname from where its running. I want to avoid this hostname in output file.
```auto
input {
file {
path => "/usrdata/logstash/logs/logstash-plain.log"
start_position => "beginning"
sincedb_path => "/dev/null"
mode => ["tail"]
}
}
filter {
mutate {
remove_field => ["host" , "@version", "@timestamp", "path"]
}
}
output {
if "ERROR" in [message] {
file {
codec => "line"
path => "/usrdata/logstash/logs/chk_logstash_alertlog.log"
}
}
}
```
The output of the above config is
```auto
my-dbvm-for-poc-01 [2022-06-01T08:12:36,889][ERROR][org.logstash.execution.WorkerLoop][check_logstash_logfile_for_errors] Exception in pipelineworker, the pipeline stopped processing new events, please check your filter configuration and restart Logstash.
```
Output contains hostname "my-dbvm-for-poc-01" . I do not want this hostname to come ..
Could you please help me .
---
### Author:  [@tusharnemade](https://discuss.elastic.co/u/tusharnemade)
#### Post date: [June 1, 2022, 11:33am UTC](https://discuss.elastic.co/t/logstash-output-file-plugin-adds-automatically-hostname/306113/2 "2022-06-01T11:33:07Z")
sometime it comes as
```auto
%{host} [2022-06-01T08:12:36,889][ERROR][org.logstash.execution.WorkerLoop][check_logstash_logfile_for_errors] Exception in pipelineworker, the pipeline stopped processing new events, please check your filter configuration and restart Logstash.
```
---
### Author:  [@tusharnemade](https://discuss.elastic.co/u/tusharnemade)
#### Post date: [June 1, 2022, 4:51pm UTC](https://discuss.elastic.co/t/logstash-output-file-plugin-adds-automatically-hostname/306113/3 "2022-06-01T16:51:31Z")
Okay , I was able to achieve same using
```auto
output {
if "ERROR" in [message] {
file {
codec => line { format => "%{message}" }
path => "/usrdata/logstash/logs/chk_logstash_alertlog.log"
}
}
}
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [June 29, 2022, 4:51pm UTC](https://discuss.elastic.co/t/logstash-output-file-plugin-adds-automatically-hostname/306113/4 "2022-06-29T16:51:57Z")
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