Variable on Logstash


(Ricardo Augusto Santos) #1

Hello everyone!

I'm creating a Centralized Logs with Filebeat, Logstash, and Elasticsearch. My Beat and Elasticsearch work well.
I'm getting a problem in my logstash on output.

logstash.conf

input {
hits
port => 5044
}
}
filter {
if [type] == "t13_oms_log" {
grok {
patterns_dir => "./patterns"
match => ["message", "% {GREEDYDATA: message}"]
overwrite => ["message"]
}
}
}
filter {
if [type] == "t13_crm_log" {
grok {
patterns_dir => "./patterns"
match => ["message", "% {GREEDYDATA: message}"]
overwrite => ["message"]
}
}
}
output {
stdout {codec => rubydebug}
elasticsearch {
hosts => ["10.28.158.2:9200"]
index => "% {type} _indexer"
}
}

When logstash sends data to the elasticsearch, it sends it to:
green open% {type} _indexer QSvQEmSNTAmIGeJIyFI_dA 5 1 3617 0 1.7mb 460b

Logstash can not resolve variable '% {type}'

I tried use an if on output, but, not work. I need a static index name
What can be this?


(Ry Biesemeyer) #2

It looks like you have a superfluous spaces in your index pattern, which is causing the string replacement engine to not see the variable in the template:

  • Instead of: index => "% {type} _indexer",
  • please try: index => "%{type}_indexer"

(Ry Biesemeyer) #3

At second-glance, the superfluous spaces around your GROK patterns are going to cause similar problems, and will result in the events not matching the patterns.

I also can't really tell what you're attempting to do with your GROK plugin configurations; the following, if specified correctly without extra spaces in the pattern template, would essentially say:

  • load all of the patterns in the specified directory (and then don't use any of them)
  • match the contents of the message field, capturing everything into a single resulting field that we will call message, overwriting the contents of message with an identical copy of itself.
grok {
  patterns_dir => "./patterns"
  match => ["message", "%{GREEDYDATA: message}"]
  overwrite => ["message"]
}

(system) closed #4

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