Logstash : Codec multi line problem | failed to parse field [time] of type [date] in document

I think that there is a problem in my multi line pattern but I don't understand where :frowning:

Here is my codec :

  file {
    path => "/var/log/all_logs/**/serverlogs/localhost.*.log"
    start_position => "beginning"
    sincedb_path => "/dev/null"
	codec => multiline {
	  pattern => "^\d{2}-\d{3}-\d{4}"
	  negate => true
	  what => "previous"
    type => "localhost"

Here are my date format :

"time": {
          "type": "date",
          "format": "yyyy-MM-dd HH:mm:ss.SSS||yyyy-MM-dd HH:mm:ss||dd-MMM-yyyy HH:mm:ss.SSS",
          "fields": {
            "keyword": {
              "type": "keyword",
              "ignore_above": 256

I can't send the full error because the message of the log is MASSIVE (like the log that I must send took thousand of line )

here is the start of the error :

[2023-04-20T13:55:33,562][WARN ][logstash.outputs.elasticsearch][main][619efc3cfdee97950b75b845b14a813a73e06f3ce7b8760276b342dbcaa01169] Could not index event to Elasticsearch. status: 400, action: ["index", {:_id=>nil, :_index=>"test_index2", :routing=>nil}, {"event"=>{"original"=>"\t\tat org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)\n\t\tat org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)\n\t\tat org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)\n\t\tat org.springframework.beans.factory.support.AbstractBeanFactory.getTypeForFactoryBean(AbstractBeanFactory.java:1469)\n\t\tat org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getTypeForFactoryBean(AbstractAutowireCapableBeanFactory.java:808)\n\t\tat org.springframework.beans.factory.support.AbstractBeanFactory.isTypeMatch(AbstractBeanFactory.java:544)\n\t\tat org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:447)\n\t\t

But in the docker container of logstash here is the end of it :

 "log"=>{"file"=>{"path"=>"/var/log/all_logs/eures-batch/serverlogs/localhost.2023-02-23.log"}}, "@version"=>"1", "type"=>"localhost", "@timestamp"=>2023-04-20T13:35:34.037120292Z}], response: {"index"=>{"_index"=>"test_index2", "_id"=>"aaHgnocB-zc9hc34owwj", "status"=>400, "error"=>{"type"=>"mapper_parsing_exception", "reason"=>"failed to parse field [time] of type [date] in document with id 'aaHgnocB-zc9hc34owwj'. Preview of field's value: '%{day_localhost}-%{month_localhost}-%{year_localhost} %{time_localhost}'", "caused_by"=>{"type"=>"illegal_argument_exception", "reason"=>"failed to parse date field [%{day_localhost}-%{month_localhost}-%{year_localhost} %{time_localhost}] with format [yyyy-MM-dd HH:mm:ss.SSS||yyyy-MM-dd HH:mm:ss||dd-MMM-yyyy HH:mm:ss.SSS]", "caused_by"=>{"type"=>"date_time_parse_exception", "reason"=>"Failed to parse with all enclosed parsers"}}}}}

And the problem if from the start of the message that doesn't start with the date but it should normally be the case because of the multi line pattern no ? Is there a limit for the size of the logs because this one is realllyyyyyyyyy long

I do not see anything in your log that matches that ("Feb" does not match \d{3}, you could try \w{3}), so the multiline codec will keep combining lines until it hits max_bytes or max_lines.

I got the same error even after changing the pattern

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