# Logstash file input : read a file only once

**URL:** https://discuss.elastic.co/t/logstash-file-input-read-a-file-only-once/92637
**Category:** Logstash
**Created:** [July 11, 2017, 12:04pm UTC](https://discuss.elastic.co/t/logstash-file-input-read-a-file-only-once/92637 "2017-07-11T12:04:19Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![kottapar](https://avatars.discourse-cdn.com/v4/letter/k/a87d85/32.png) [@kottapar](https://discuss.elastic.co/u/kottapar)
#### Post date: [July 11, 2017, 12:04pm UTC](https://discuss.elastic.co/t/logstash-file-input-read-a-file-only-once/92637/1 "2017-07-11T12:04:20Z")

</div>

I'm sort of confused, probably on how to use file input for a CSV file. I have a CSV file which is copied over to a dir once every day. I want it to be read only once in a day.

So here's my conf. The issue is I restarted logstash yesterday and the records got indexed. Now today when I copied over the file and overwritten the file, the records were appended to yesterday's index instead of creating a new index.

Should I be using the close\_older? But then the default value of 1 hour should close it.

what should I do to ensure the file is read only once every day and a new index is created everyday?  
I can set the stat\_interval to 86400 to make it stat the file every 24 hours. But why is the new index not created?

```
input {
  file {
    path => "cat /infra/elk/unixtoelk_inv/inv_aix.csv"
    start_position => "beginning"
    type => invunix
    sincedb_path => "/dev/null"
  }
}

filter {
  if [type] == "invunix" {
    csv {
      separator => ","
      columns => ["Date","Location","HostName","IP_Address","OS","OS_Version"]
    }
    date {
      match => ["Date", "ddMMYYYYHHmmss"]
    }
    mutate {
      remove_field => ["Date", "path", "host", "message"]
    }
  }
}

output {
  if [type] == "invunix" {
    elasticsearch {
      index => "inv-unix-%{+dd-MM-YYYY}"
      hosts => ["10.15.13.84:9200"]     
    }
  }
# stdout { codec => rubydebug }
}
```

---

<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: [August 8, 2017, 12:04pm UTC](https://discuss.elastic.co/t/logstash-file-input-read-a-file-only-once/92637/2 "2017-08-08T12:04:43Z")

</div>

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