Empty message with exec input plugin

Elastic Stack Logstash
1

The ls command returns empty message.

input {
  exec {
    command => "ls -l path/to/a/specific/file"
    interval => 30
  }
}

filter :

grok {
  match => { 
	"message" => "^%{DATA:permission}\s+%{NUMBER:links_nb}\s+%{DATA:owner_name}\s+%{DATA:owner_group}\s+%{NUMBER:filesize_o}.*"
  }
}

output :

file {
 codec => rubydebug
}

Tested with :
•Plugin version: v3.1.4
•Plugin version: v3.3.2

2

Anybody has an idea about this issue ?

3

there are several posts here with the same issue : no solution given.

any clue ?

4

any solution ?

5

any idea ?

6

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