Why doesn't logstash produce logs?

Question

i read below articles to understand logstash technology i established ELK environment. https://tpodolak.com/blog/tag/kibana/


input {
    file {
        path => ["C:/logs/*.log"]
        start_position => beginning
        ignore_older => 0

    }
}
filter {
    grok {
        match => { "message" => "TimeStamp=%{TIMESTAMP_ISO8601:logdate} CorrelationId=%{UUID:correlationId} Level=%{LOGLEVEL:logLevel} Message=%{GREEDYDATA:logMessage}" }
    }
    # set the event timestamp from the log
    # https://www.elastic.co/guide/en/logstash/current/plugins-filters-date.html
    date {
         match => [ "logdate", "yyyy-MM-dd HH:mm:ss.SSSS" ]
        target => "@timestamp"
    }
}
output {
    elasticsearch {
        hosts => "localhost:9200"
    }
    stdout {}
}

i added input path C/logs/*.log in logstash.conf. i have test.log file that is not empty, it has :


TimeStamp=2016-07-20 21:22:46.0079 CorrelationId=dc665fe7-9734-456a-92ba-3e1b522f5fd4 Level=INFO Message=About
TimeStamp=2016-07-20 21:22:46.0079 CorrelationId=dc665fe7-9734-456a-92ba-3e1b522f5fd4 Level=INFO Message=About
TimeStamp=2016-11-01 00:13:01.1669 CorrelationId=77530786-8e6b-45c2-bbc1-31837d911c14 Level=INFO Message=Request completed with status code: 200

According to above article. i have to see that my logs inside of the elasticsearch. (From "https://tpodolak.com/blog/tag/kibana/" sample result ) But my result if i write to my browser this adress: http://localhost:9200/_cat/indices?v i can not see logstash logs in elasticsearch? where is logstash logs stored in elastic search? logstash.conf looks ok. but there is no satisfied result. As a result. i want to get all logs from under C/logs/*.log TO elastic by logstash? but what is my error in my logstash.conf?

My LOGS (C:\monitoring\logstash\logs\C:\monitoring\logstash\logs.log):


[2017-03-13T10:47:17,849][INFO ][logstash.runner          ] Using config.test_and_exit mode. Config Validation Result: OK. Exiting Logstash
[2017-03-13T11:46:35,123][INFO ][logstash.runner          ] Using config.test_and_exit mode. Config Validation Result: OK. Exiting Logstash
[2017-03-13T11:48:20,023][INFO ][logstash.runner          ] Using config.test_and_exit mode. Config Validation Result: OK. Exiting Logstash
[2017-03-13T11:55:10,808][INFO ][logstash.pipeline        ] Starting pipeline {"id"=>"main", "pipeline.workers"=>4, "pipeline.batch.size"=>125, "pipeline.batch.delay"=>5, "pipeline.max_inflight"=>500}
[2017-03-13T11:55:10,871][INFO ][logstash.pipeline        ] Pipeline main started
[2017-03-13T11:55:11,316][INFO ][logstash.agent           ] Successfully started Logstash API endpoint {:port=>9600}
[2017-03-13T12:00:52,188][INFO ][logstash.runner          ] Using config.test_and_exit mode. Config Validation Result: OK. Exiting Logstash
[2017-03-13T12:02:48,309][INFO ][logstash.runner          ] Using config.test_and_exit mode. Config Validation Result: OK. Exiting Logstash
[2017-03-13T12:06:33,270][ERROR][logstash.agent           ] Cannot load an invalid configuration {:reason=>"Expected one of #, => at line 1, column 52 (byte 52) after output { elasticsearch { hosts "}
[2017-03-13T12:08:51,636][ERROR][logstash.agent           ] Cannot load an invalid configuration {:reason=>"Expected one of #, => at line 1, column 22 (byte 22) after input {  file { path "}
[2017-03-13T12:09:48,114][ERROR][logstash.agent           ] Cannot load an invalid configuration {:reason=>"Expected one of #, => at line 1, column 22 (byte 22) after input {  file { path "}
[2017-03-13T12:11:40,200][ERROR][logstash.agent           ] Cannot load an invalid configuration {:reason=>"Expected one of #, => at line 1, column 22 (byte 22) after input {  file { path "}
[2017-03-13T12:19:17,622][INFO ][logstash.runner          ] Using config.test_and_exit mode. Config Validation Result: OK. Exiting Logstash

@asettouf; my logstash out but is : output { elasticsearch { hosts => "localhost:9200" } stdout {} } — loki, Mar 13 '17 at 06:21
Sorry I meant the output on the console or in the logs of logstash — Adonis, Mar 13 '17 at 07:44
How can i see my logs on the console? http://localhost:9200/_cat/indices?v — loki, Mar 13 '17 at 08:15
My log file has : TimeStamp=2016-07-20 21:22:46.0079 CorrelationId=dc665fe7-9734-456a-92ba-3e1b522f5fd4 Level=INFO Message=About TimeStamp=2016-07-20 21:22:46.0079 CorrelationId=dc665fe7-9734-456a-92ba-3e1b522f5fd4 Level=INFO Message=About TimeStamp=2016-11-01 00:13:01.1669 CorrelationId=77530786-8e6b-45c2-bbc1-31837d911c14 Level=INFO Message=Request completed with status code: 200 — loki, Mar 13 '17 at 08:15
When you start logstash, it will write things on the console, same for elasticsearch, it might be interesting to see what's there — Adonis, Mar 13 '17 at 08:19
i added my logs in logstash. PLease check it . i need your help — loki, Mar 13 '17 at 10:29

score 3 · Accepted Answer · answered Mar 13 '17 at 11:34

First of all you have a few configuration issues:

Hosts in Elasticsearch should be an array (e.g hosts => ["myHost:myPort3]), see the doc
File on Windows using the wildcard should use forward slashes and not backward (see this issue)
Your date filter is looking for a field "logdate" when it should look for the field "TimeStamp" (given your log file)
One setting I would had for convenience is the sincedb_path as Logstash will not try to parse again a file it already parsed (it checks into a .sincedb to see if it already parsed a file, by default located at $HOME/.sincedb, you need to delete it in between parsing when you test with the same log file)

That's why after a few research (actually a lot, not being a windows user), I could come up with this config that works:

input {
    file {
        path => "C:/some/log/dir/*"
        start_position => beginning
        ignore_older => 0
        sincedb_path => "NIL" #easier to remove from the current directory, the file will be NIL.sincedb

    }
}
filter {
    grok {
        match => { "message" => "TimeStamp=%{TIMESTAMP_ISO8601:logdate} CorrelationId=%{UUID:correlationId} Level=%{LOGLEVEL:logLevel} Message=%{GREEDYDATA:logMessage}" }
    }
    # set the event timestamp from the log
    # https://www.elastic.co/guide/en/logstash/current/plugins-filters-date.html
    date {
         match => [ "TimeStamp", "yyyy-MM-dd HH:mm:ss.SSS" ]
        target => "@timestamp"
    }
}
output {
    elasticsearch {
        hosts => ["localhost:9200"]
    }
    stdout {}
}

The equivalent for windows, probably %HOMEPATH% (which should be by default C:\Users\MyUserName\) — Adonis, Mar 13 '17 at 14:07

Why doesn't logstash produce logs?

1 Answers1