# Logstash logs all inputs to syslog

**URL:** <https://discuss.elastic.co/t/logstash-logs-all-inputs-to-syslog/84499>\
**Category:** Logstash\
**Created:** [May 4, 2017, 7:57am UTC](https://discuss.elastic.co/t/logstash-logs-all-inputs-to-syslog/84499 "2017-05-04T07:57:13Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![nicklaw](https://avatars.discourse-cdn.com/v4/letter/n/87869e/32.png) [@nicklaw](https://discuss.elastic.co/u/nicklaw)\
**Post date:** [May 4, 2017, 7:57am UTC](https://discuss.elastic.co/t/logstash-logs-all-inputs-to-syslog/84499/1 "2017-05-04T07:57:13Z")

</div>

Logstash version: 5.3.2  
OS: Ubuntu 16.04

I have issue that sees anything that comes through the Logstash Input get appended to the system's syslog, even if I have `log.level: fatal` set in the configuration file. Is this a normal operation for Logstash?

Here is my configuration set:

**/etc/logstash/logstash.yml**

```
node.name: prod-elk-1
path.data: /var/lib/logstash
path.config: /etc/logstash/conf.d
path.data: /mnt/data/logstash
path.logs: /var/log/logstash
log.level: fatal

```

**/etc/logstash/conf.d/grok.conf**

```
input {
  beats {
    port => 5044
  }
}

# START FILTER #
filter {
  
  if [type] == "syslog" {
    grok {
      match => { "message" => "%{SYSLOG_UBUNTU}" }
      add_field => ["received_at", "%{@timestamp}"]
      add_field => ["received_from", "%{host}"]
    }
    date {
      match => ["syslog_timestamp", "MMM d HH:mm:ss", "MMM dd HH:mm:ss"]
    }
  }

  else if [type] == "nginx-access" {
    grok {
      patterns_dir => ["/usr/share/logstash/patterns"]
      match => { "message" => "%{NGINX_ACCESS}" }
      add_field => ["received_from", "%{host}"]
    }
    ruby {
      code => "
        event.set('request_time_ms', event.get('request_time') * 1000)
        event.set('upsteam_response_time_ms', event.get('upsteam_response_time') * 1000)
      "
    }
    mutate {
      remove_field => ["request_time", "upsteam_response_time"]
      convert => {
        "request_time_ms" => "integer"
        "upsteam_response_time_ms" => "integer"
      }
    }
    geoip {
      source => "client_ip"
    }
    useragent {
      source => "useragent_raw"
      target => "useragent"
    }
  }
}

output {
  elasticsearch { hosts => ["127.0.0.1:9200"] }
  stdout { codec => rubydebug }
}

```

**/var/log/syslog**

```
May 4 07:58:35 prod-elk-1 logstash[10852]: {
May 4 07:58:35 prod-elk-1 logstash[10852]: "syslog_pid" => "9339",
May 4 07:58:35 prod-elk-1 logstash[10852]: "offset" => 125237678,
May 4 07:58:35 prod-elk-1 logstash[10852]: "input_type" => "log",
May 4 07:58:35 prod-elk-1 logstash[10852]: "source" => "/var/log/syslog",
May 4 07:58:35 prod-elk-1 logstash[10852]: "syslog_program" => "logstash",
May 4 07:58:35 prod-elk-1 logstash[10852]: "message" => "May 4 07:29:45 prod-elk-1 logstash[9339]: \"syslog_hostname\" => \"prod-elk-1\",",
May 4 07:58:35 prod-elk-1 logstash[10852]: "type" => "syslog",
May 4 07:58:35 prod-elk-1 logstash[10852]: "syslog_message" => " \"syslog_hostname\" => \"prod-elk-1\",",
May 4 07:58:35 prod-elk-1 logstash[10852]: "tags" => [
May 4 07:58:35 prod-elk-1 logstash[10852]: [0] "beats_input_codec_plain_applied"
May 4 07:58:35 prod-elk-1 logstash[10852]: ],
May 4 07:58:35 prod-elk-1 logstash[10852]: "received_from" => "prod-elk-1",
May 4 07:58:35 prod-elk-1 logstash[10852]: "@timestamp" => 2017-05-04T07:58:29.228Z,
May 4 07:58:35 prod-elk-1 logstash[10852]: "syslog_hostname" => "prod-elk-1",
May 4 07:58:35 prod-elk-1 logstash[10852]: "received_at" => "2017-05-04T07:58:29.228Z",
May 4 07:58:35 prod-elk-1 logstash[10852]: "@version" => "1",
May 4 07:58:35 prod-elk-1 logstash[10852]: "beat" => {
May 4 07:58:35 prod-elk-1 logstash[10852]: "hostname" => "prod-elk-1",
May 4 07:58:35 prod-elk-1 logstash[10852]: "name" => "prod-elk-1",
May 4 07:58:35 prod-elk-1 logstash[10852]: "version" => "5.3.2"
May 4 07:58:35 prod-elk-1 logstash[10852]: },
May 4 07:58:35 prod-elk-1 logstash[10852]: "host" => "prod-elk-1"
May 4 07:58:35 prod-elk-1 logstash[10852]: }
May 4 07:58:35 prod-elk-1 logstash[10852]: {
May 4 07:58:35 prod-elk-1 logstash[10852]: "syslog_pid" => "9339",
May 4 07:58:35 prod-elk-1 logstash[10852]: "offset" => 125237774,
May 4 07:58:35 prod-elk-1 logstash[10852]: "input_type" => "log",
May 4 07:58:35 prod-elk-1 logstash[10852]: "source" => "/var/log/syslog",
May 4 07:58:35 prod-elk-1 logstash[10852]: "syslog_program" => "logstash",
May 4 07:58:35 prod-elk-1 logstash[10852]: "message" => "May 4 07:29:45 prod-elk-1 logstash[9339]: \"received_at\" => \"2017-05-04T07:29:37.503Z\",",
May 4 07:58:35 prod-elk-1 logstash[10852]: "type" => "syslog",
May 4 07:58:35 prod-elk-1 logstash[10852]: "syslog_message" => " \"received_at\" => \"2017-05-04T07:29:37.503Z\",",
May 4 07:58:35 prod-elk-1 logstash[10852]: "tags" => [
May 4 07:58:35 prod-elk-1 logstash[10852]: [0] "beats_input_codec_plain_applied"
May 4 07:58:35 prod-elk-1 logstash[10852]: ],
May 4 07:58:35 prod-elk-1 logstash[10852]: "received_from" => "prod-elk-1",
May 4 07:58:35 prod-elk-1 logstash[10852]: "@timestamp" => 2017-05-04T07:58:29.228Z,
May 4 07:58:35 prod-elk-1 logstash[10852]: "syslog_hostname" => "prod-elk-1",
May 4 07:58:35 prod-elk-1 logstash[10852]: "received_at" => "2017-05-04T07:58:29.228Z",
May 4 07:58:35 prod-elk-1 logstash[10852]: "@version" => "1",
May 4 07:58:35 prod-elk-1 logstash[10852]: "beat" => {
May 4 07:58:35 prod-elk-1 logstash[10852]: "hostname" => "prod-elk-1",
May 4 07:58:35 prod-elk-1 logstash[10852]: "name" => "prod-elk-1",
May 4 07:58:35 prod-elk-1 logstash[10852]: "version" => "5.3.2"
May 4 07:58:35 prod-elk-1 logstash[10852]: },
May 4 07:58:35 prod-elk-1 logstash[10852]: "host" => "prod-elk-1"
May 4 07:58:35 prod-elk-1 logstash[10852]: }
```

---

<div class="post-metadata">

**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [May 6, 2017, 7:21pm UTC](https://discuss.elastic.co/t/logstash-logs-all-inputs-to-syslog/84499/2 "2017-05-06T19:21:50Z")

</div>

It's normal and expected if you have a `stdout { codec => rubydebug }` output in your configuration. Remove it.

---

<div class="post-metadata">

**Author:** ![nicklaw](https://avatars.discourse-cdn.com/v4/letter/n/87869e/32.png) [@nicklaw](https://discuss.elastic.co/u/nicklaw)\
**Post date:** [May 8, 2017, 1:27am UTC](https://discuss.elastic.co/t/logstash-logs-all-inputs-to-syslog/84499/3 "2017-05-08T01:27:18Z")

</div>

@magnusbaeck Thanks for point that out. Appreciate you help 👍

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [June 5, 2017, 1:34am UTC](https://discuss.elastic.co/t/logstash-logs-all-inputs-to-syslog/84499/4 "2017-06-05T01:34:23Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.