Logstash Pipeline from 6.1 not working 6.2.1

wwalker · February 20, 2018, 2:36am

This is exhausting....

Creating a guide and started a new ElasticStack setup from scratch, new VMs and all. Installed ElasticStack 6.2.1 with each application on it's own VM. Started Logstash with my pipeline with no issue. Tried to ingest a file and it errors out with the following. The pipeline is a direct copy from a Logstash 6.1.1 installation that is working. I've even tried retyping the entire pipeline using Notepad++ ensuring UTF8 encoding is used.

[2018-02-19T20:30:43,161][ERROR][logstash.pipeline        ] Exception in pipelineworker, the pipeline stopped processing new events, please check your filter configuration and restart Logstash. {:pipeline_id=>"main", "exception"=>"ASCII-8BIT", "backtrace"=>["j
ava.nio.charset.Charset.forName(Charset.java:531)", "nokogiri.internals.SaveContextVisitor.encodeStringToHtmlEntity(SaveContextVisitor.java:758)", "nokogiri.internals.SaveContextVisitor.enter(SaveContextVisitor.java:750)", "nokogiri.XmlText.accept(XmlText.java
:92)", "nokogiri.XmlNode.native_write_to(XmlNode.java:1272)", "C_3a_.logstash.vendor.bundle.jruby.$2_dot_3_dot_0.gems.nokogiri_minus_1_dot_8_dot_2_minus_java.lib.nokogiri.xml.node.RUBY$method$write_to$0(C:/logstash/vendor/bundle/jruby/2.3.0/gems/nokogiri-1.8.2
-java/lib/nokogiri/xml/node.rb:697)", "org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:77)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:93)", "org.jruby.ir.targets.InvokeSite.invoke(InvokeSi
te.java:145)", "C_3a_.logstash.vendor.bundle.jruby.$2_dot_3_dot_0.gems.nokogiri_minus_1_dot_8_dot_2_minus_java.lib.nokogiri.xml.node.RUBY$method$serialize$0(C:/logstash/vendor/bundle/jruby/2.3.0/gems/nokogiri-1.8.2-java/lib/nokogiri/xml/node.rb:629)", "org.jru
by.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:77)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:93)", "org.jruby.ir.targets.InvokeSite.invoke(InvokeSite.java:145)", "C_3a_.logstash.vendor.bundle.j
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ubyHash.visitAll(RubyHash.java:647)", "org.jruby.RubyHash.iteratorVisitAll(RubyHash.java:1319)", "org.jruby.RubyHash.each_pairCommon(RubyHash.java:1354)", "org.jruby.RubyHash.each(RubyHash.java:1343)", "C_3a_.logstash.vendor.bundle.jruby.$2_dot_3_dot_0.gems.lo
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wwalker · February 20, 2018, 2:36am

tash_minus_filter_minus_xml_minus_4_dot_0_dot_5.lib.logstash.filters.xml.RUBY$method$filter$0$__VARARGS__(C:/logstash/vendor/bundle/jruby/2.3.0/gems/logstash-filter-xml-4.0.5/lib/logstash/filters/xml.rb)", "org.jruby.internal.runtime.methods.CompiledIRMethod.c
all(CompiledIRMethod.java:77)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:93)", "org.jruby.ir.targets.InvokeSite.invoke(InvokeSite.java:145)", "C_3a_.logstash.logstash_minus_core.lib.logstash.filters.base.RUBY$method$do_
filter$0(C:/logstash/logstash-core/lib/logstash/filters/base.rb:145)", "C_3a_.logstash.logstash_minus_core.lib.logstash.filters.base.RUBY$method$do_filter$0$__VARARGS__(C:/logstash/logstash-core/lib/logstash/filters/base.rb)", "org.jruby.internal.runtime.metho
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.base.RUBY$block$multi_filter$1(C:/logstash/logstash-core/lib/logstash/filters/base.rb:164)", "org.jruby.runtime.CompiledIRBlockBody.yieldDirect(CompiledIRBlockBody.java:156)", "org.jruby.runtime.BlockBody.yield(BlockBody.java:114)", "org.jruby.runtime.Block.y
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ruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:161)", "org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:314)", "org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)", "org.j
ruby.ir.interpreter.Interpreter.INTERPRET_BLOCK(Interpreter.java:132)", "org.jruby.runtime.MixedModeIRBlockBody.commonYieldPath(MixedModeIRBlockBody.java:148)", "org.jruby.runtime.IRBlockBody.call(IRBlockBody.java:73)", "org.jruby.runtime.Block.call(Block.java
:124)", "org.jruby.RubyProc.call(RubyProc.java:289)", "org.jruby.internal.runtime.methods.ProcMethod.call(ProcMethod.java:63)", "org.jruby.ir.targets.InvokeSite.invoke(InvokeSite.java:145)", "C_3a_.logstash.logstash_minus_core.lib.logstash.pipeline.RUBY$method
$filter_batch$0(C:/logstash/logstash-core/lib/logstash/pipeline.rb:447)", "C_3a_.logstash.logstash_minus_core.lib.logstash.pipeline.RUBY$method$filter_batch$0$__VARARGS__(C:/logstash/logstash-core/lib/logstash/pipeline.rb)", "org.jruby.internal.runtime.methods
.CompiledIRMethod.call(CompiledIRMethod.java:77)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:93)", "org.jruby.ir.targets.InvokeSite.invoke(InvokeSite.java:145)", "C_3a_.logstash.logstash_minus_core.lib.logstash.pipeline.
RUBY$method$worker_loop$0(C:/logstash/logstash-core/lib/logstash/pipeline.rb:426)", "C_3a_.logstash.logstash_minus_core.lib.logstash.pipeline.RUBY$method$worker_loop$0$__VARARGS__(C:/logstash/logstash-core/lib/logstash/pipeline.rb)", "org.jruby.internal.runtim
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pipeline.RUBY$block$start_workers$2(C:/logstash/logstash-core/lib/logstash/pipeline.rb:385)", "org.jruby.runtime.CompiledIRBlockBody.callDirect(CompiledIRBlockBody.java:145)", "org.jruby.runtime.IRBlockBody.call(IRBlockBody.java:71)", "org.jruby.runtime.Block.
call(Block.java:124)", "org.jruby.RubyProc.call(RubyProc.java:289)", "org.jruby.RubyProc.call(RubyProc.java:246)", "org.jruby.internal.runtime.RubyRunnable.run(RubyRunnable.java:104)", "java.lang.Thread.run(Thread.java:748)"], :thread=>"#<Thread:0x718b3138 sle
ep>"}

warkolm · February 20, 2018, 3:34am

Is that too long to fit into one post? Can you also post your config?

wwalker · February 20, 2018, 3:36am

It was.

Here's the pipeline:

input {
  file {
    id => "C:\DMARC\*.xml"
    path => "C:/DMARC/*.xml"
    discover_interval => 5
    codec => multiline {
      auto_flush_interval => 5
      negate => true
      pattern => "<record>"
      what => "previous"
    }
  }
}
filter {
  xml {
    id => "Field Extraction"
    force_array => true
    store_xml => false
    source => "message"
    xpath => [
      "record/report_metadata/org_name/text()", "report.org",
      "record/report_metadata/email/text()", "report.org_contact",
      "record/report_metadata/extra_contact_info/text()", "report.additional_contact",
      "record/report_metadata/report_id/text()", "report.id",
      "record/report_metadata/date_range/begin/text()", "report.start",
      "record/report_metadata/date_range/end/text()", "report.end",
      "record/policy_published/domain/text()", "policy.domain",
      "record/policy_published/aspf/text()", "policy.spf_mode",
      "record/policy_published/adkim/text()", "policy.dkim_mode",
      "record/policy_published/p/text()", "policy.dmarc.domain_action",
      "record/policy_published/sp/text()", "policy.dmarc.subdomain_action",
      "record/policy_published/pct/text()", "policy.percentage",
      "record/row/source_ip/text()", "email.source_ip",
      "record/row/count/text()", "email.count",
      "record/row/policy_evaluated/disposition/text()", "email.dmarc_action",
      "record/row/policy_evaluated/spf/text()", "email.spf_evaluation",
      "record/row/policy_evaluated/dkim/text()", "email.dkim_evaluation",
      "record/row/policy_evaluated/reason/type/text()", "dmarc.override_type",
      "record/row/policy_evaluated/reason/comment/text()", "dmarc.override_comment",
      "record/identifiers/envelope_to/text()", "email.envelope_to",
      "record/identifiers/envelope_from/text()", "email.envelope_from",
      "record/identifiers/header_from/text()", "email.header_from",
      "record/auth_results/dkim/domain/text()", "authresult.dkim_domain",
      "record/auth_results/dkim/result/text()", "authresult.dkim_result",
      "record/auth_results/spf/domain/text()", "authresult.spf_domain",
      "record/auth_results/spf/scope/text()", "authresult.spf_scope",
      "record/auth_results/spf/result/text()", "authresult.spf_result"
    # ]
  }
    geoip {
      id => "IP Geo-Mapping"
      source => "email.source_ip"
      add_field => {
        "[geoip][location][coordinates]" => "%{[geoip][location][lat]}, %{[geoip][location][lon]}"
      }
    }
}
output {
  elasticsearch {
    id => "Send to Elasticsearch"
    hosts => ["ElasticStack:9200"]
#    user => "elastic"
#    password => "elastic"
    http_compression => true
    template => "C:/logstash/templates/dmarcxmltemplate.json"
    template_name => "dmarcxml"
    index => "dmarcxml-%{+YYYY.MM.DD}"
  }
}

warkolm · February 20, 2018, 3:40am

Can you gist/pastebin/etc up the error, it's a bit mangled as is, and the continuity and formatting is important

wwalker · February 20, 2018, 3:42am

https://pastebin.com/VU6QHzaU

warkolm · February 20, 2018, 3:52am

Thanks for that.

What version of the XML filter plugin is installed? bin/logstash-plugin list '*xml*' should show that.

wwalker · February 20, 2018, 3:55am

C:\logstash\bin>logstash-plugin list *xml*
RegexpError: (RegexpError) target of repeat operator is not specified: /*xml*/i
  block in filtered_specs at C:/logstash/lib/pluginmanager/list.rb:35
                   select at org/jruby/RubyArray.java:2565
           filtered_specs at C:/logstash/lib/pluginmanager/list.rb:35
                  execute at C:/logstash/lib/pluginmanager/list.rb:19
                      run at C:/logstash/vendor/bundle/jruby/2.3.0/gems/clamp-0.6.5/lib/clamp/command.rb:67
                  execute at C:/logstash/vendor/bundle/jruby/2.3.0/gems/clamp-0.6.5/lib/clamp/subcommand/execution.rb:11
                      run at C:/logstash/vendor/bundle/jruby/2.3.0/gems/clamp-0.6.5/lib/clamp/command.rb:67
                      run at C:/logstash/vendor/bundle/jruby/2.3.0/gems/clamp-0.6.5/lib/clamp/command.rb:132
                   <main> at C:\logstash\lib\pluginmanager\main.rb:48

wwalker · February 20, 2018, 4:14am

Just realized I was missing a couple characters in that command you gave me, doesn't appear to make a difference though. BTW, I'm using the xml filter that came with the install.

C:\logstash\bin>logstash-plugin list '*xml*'
RegexpError: (RegexpError) target of repeat operator is not specified: /*xml*/i
  block in filtered_specs at C:/logstash/lib/pluginmanager/list.rb:35
                   select at org/jruby/RubyArray.java:2565
           filtered_specs at C:/logstash/lib/pluginmanager/list.rb:35
                  execute at C:/logstash/lib/pluginmanager/list.rb:19
                      run at C:/logstash/vendor/bundle/jruby/2.3.0/gems/clamp-0.6.5/lib/clamp/command.rb:67
                  execute at C:/logstash/vendor/bundle/jruby/2.3.0/gems/clamp-0.6.5/lib/clamp/subcommand/execution.rb:11
                      run at C:/logstash/vendor/bundle/jruby/2.3.0/gems/clamp-0.6.5/lib/clamp/command.rb:67
                      run at C:/logstash/vendor/bundle/jruby/2.3.0/gems/clamp-0.6.5/lib/clamp/command.rb:132
                   <main> at C:\logstash\lib\pluginmanager\main.rb:48

warkolm · February 20, 2018, 4:15am

What does just logstash-plugin list show?

wwalker · February 20, 2018, 4:27am

PS C:\logstash\bin> .\logstash-plugin list
logstash-codec-cef
logstash-codec-collectd
logstash-codec-dots
logstash-codec-edn
logstash-codec-edn_lines
logstash-codec-es_bulk
logstash-codec-fluent
logstash-codec-graphite
logstash-codec-json
logstash-codec-json_lines
logstash-codec-line
logstash-codec-msgpack
logstash-codec-multiline
logstash-codec-netflow
logstash-codec-plain
logstash-codec-rubydebug
logstash-filter-aggregate
logstash-filter-anonymize
logstash-filter-cidr
logstash-filter-clone
logstash-filter-csv
logstash-filter-date
logstash-filter-de_dot
logstash-filter-dissect
logstash-filter-dns
logstash-filter-drop
logstash-filter-elasticsearch
logstash-filter-fingerprint
logstash-filter-geoip
logstash-filter-grok
logstash-filter-jdbc_static
logstash-filter-jdbc_streaming
logstash-filter-json
logstash-filter-kv
logstash-filter-metrics
logstash-filter-mutate
logstash-filter-ruby
logstash-filter-sleep
logstash-filter-split
logstash-filter-syslog_pri
logstash-filter-throttle
logstash-filter-translate
logstash-filter-truncate
logstash-filter-urldecode
logstash-filter-useragent
logstash-filter-xml
logstash-input-beats
logstash-input-dead_letter_queue
logstash-input-elasticsearch
logstash-input-exec
logstash-input-file
logstash-input-ganglia
logstash-input-gelf
logstash-input-generator
logstash-input-graphite
logstash-input-heartbeat
logstash-input-http
logstash-input-http_poller
logstash-input-imap
logstash-input-jdbc
logstash-input-kafka
logstash-input-pipe
logstash-input-rabbitmq
logstash-input-redis
logstash-input-s3
logstash-input-snmptrap
logstash-input-sqs
logstash-input-stdin
logstash-input-syslog
logstash-input-tcp
logstash-input-twitter
logstash-input-udp
logstash-input-unix
logstash-output-cloudwatch
logstash-output-csv
logstash-output-elasticsearch
logstash-output-email
logstash-output-file
logstash-output-graphite
logstash-output-http
logstash-output-kafka
logstash-output-lumberjack
logstash-output-nagios
logstash-output-null
logstash-output-pagerduty
logstash-output-pipe
logstash-output-rabbitmq
logstash-output-redis
logstash-output-s3
logstash-output-sns
logstash-output-sqs
logstash-output-stdout
logstash-output-tcp
logstash-output-udp
logstash-output-webhdfs
logstash-patterns-core
PS C:\logstash\bin> ^Q

magnusbaeck · February 20, 2018, 5:26am

logstash-plugin list --verbose please.

wwalker · February 20, 2018, 5:27am

PS C:\logstash\bin> .\logstash-plugin list --verbose
logstash-codec-cef (5.0.2)
logstash-codec-collectd (3.0.8)
logstash-codec-dots (3.0.6)
logstash-codec-edn (3.0.6)
logstash-codec-edn_lines (3.0.6)
logstash-codec-es_bulk (3.0.6)
logstash-codec-fluent (3.1.5)
logstash-codec-graphite (3.0.5)
logstash-codec-json (3.0.5)
logstash-codec-json_lines (3.0.5)
logstash-codec-line (3.0.8)
logstash-codec-msgpack (3.0.7)
logstash-codec-multiline (3.0.9)
logstash-codec-netflow (3.10.0)
logstash-codec-plain (3.0.6)
logstash-codec-rubydebug (3.0.5)
logstash-filter-aggregate (2.7.2)
logstash-filter-anonymize (3.0.6)
logstash-filter-cidr (3.1.2)
logstash-filter-clone (3.0.5)
logstash-filter-csv (3.0.8)
logstash-filter-date (3.1.9)
logstash-filter-de_dot (1.0.3)
logstash-filter-dissect (1.1.3)
logstash-filter-dns (3.0.7)
logstash-filter-drop (3.0.5)
logstash-filter-elasticsearch (3.3.0)
logstash-filter-fingerprint (3.1.2)
logstash-filter-geoip (5.0.3)
logstash-filter-grok (4.0.2)
logstash-filter-jdbc_static (1.0.0)
logstash-filter-jdbc_streaming (1.0.3)
logstash-filter-json (3.0.5)
logstash-filter-kv (4.0.3)
logstash-filter-metrics (4.0.5)
logstash-filter-mutate (3.2.0)
logstash-filter-ruby (3.1.3)
logstash-filter-sleep (3.0.6)
logstash-filter-split (3.1.6)
logstash-filter-syslog_pri (3.0.5)
logstash-filter-throttle (4.0.4)
logstash-filter-translate (3.0.4)
logstash-filter-truncate (1.0.4)
logstash-filter-urldecode (3.0.6)
logstash-filter-useragent (3.2.2)
logstash-filter-xml (4.0.5)
logstash-input-beats (5.0.6)
logstash-input-dead_letter_queue (1.1.2)
logstash-input-elasticsearch (4.2.0)
logstash-input-exec (3.1.5)
logstash-input-file (4.0.3)
logstash-input-ganglia (3.1.3)
logstash-input-gelf (3.1.0)
logstash-input-generator (3.0.5)
logstash-input-graphite (3.0.4)
logstash-input-heartbeat (3.0.5)
logstash-input-http (3.0.8)
logstash-input-http_poller (4.0.4)
logstash-input-imap (3.0.5)
logstash-input-jdbc (4.3.3)
logstash-input-kafka (8.0.4)
logstash-input-pipe (3.0.6)
logstash-input-rabbitmq (6.0.2)
logstash-input-redis (3.1.6)
logstash-input-s3 (3.2.0)
logstash-input-snmptrap (3.0.5)
logstash-input-sqs (3.0.6)
logstash-input-stdin (3.2.5)
logstash-input-syslog (3.2.4)
logstash-input-tcp (5.0.3)
logstash-input-twitter (3.0.7)
logstash-input-udp (3.2.1)
logstash-input-unix (3.0.6)
logstash-output-cloudwatch (3.0.7)
logstash-output-csv (3.0.6)
logstash-output-elasticsearch (9.0.2)
logstash-output-email (4.1.0)
logstash-output-file (4.2.1)
logstash-output-graphite (3.1.4)
logstash-output-http (5.2.0)
logstash-output-kafka (7.0.8)
logstash-output-lumberjack (3.1.5)
logstash-output-nagios (3.0.5)
logstash-output-null (3.0.4)
logstash-output-pagerduty (3.0.6)
logstash-output-pipe (3.0.5)
logstash-output-rabbitmq (5.1.0)
logstash-output-redis (4.0.3)
logstash-output-s3 (4.0.13)
logstash-output-sns (4.0.6)
logstash-output-sqs (5.0.2)
logstash-output-stdout (3.1.3)
logstash-output-tcp (5.0.2)
logstash-output-udp (3.0.5)
logstash-output-webhdfs (3.0.5)
logstash-patterns-core (4.1.2)
PS C:\logstash\bin>

magnusbaeck · February 20, 2018, 5:44am

So,

github.com

logstash-plugins/logstash-filter-xml/blob/v4.0.5/lib/logstash/filters/xml.rb#L171


      # TODO: (colin) the return statement here feels like a bug and should probably be a next ?
      return if value.is_a?(Array) && value.length == 0


      if value
        matched = true
        # TODO: (colin) this can probably be optimized to avoid the Event get/set at every loop iteration anf
        # the array should probably be created once, filled in the loop and set at after the loop but the return
        # statement above screws this strategy and is likely a bug anyway so I will not touch this until I can
        # deep a big deeper and verify there is a sufficient test harness to refactor this.
        data = event.get(xpath_dest) || []
        data << value.to_s
        event.set(xpath_dest, data)
      end
    end
  end
end


if @store_xml
  begin
    xml_options = {"ForceArray" => @force_array, "ForceContent" => @force_content}
    xml_options["SuppressEmpty"] = true if @suppress_empty

is the last line in the Logstash code before we eventually reach

github.com

sparklemotion/nokogiri/blob/v1.8.2/ext/java/nokogiri/internals/SaveContextVisitor.java#L758


    }


    textContent = encodeStringToHtmlEntity(textContent);
    buffer.append(textContent);
    return true;
}


private CharSequence encodeStringToHtmlEntity(CharSequence text) {
    if (encoding == null) return text;


    CharsetEncoder encoder = Charset.forName(encoding).newEncoder();
    StringBuilder sb = new StringBuilder(text.length() + 16);
    // make sure we can handle code points that are higher than 2 bytes
    for ( int i = 0; i < text.length(); ) {
        int code = Character.codePointAt(text, i);
        // TODO not sure about bigger offset then 2 ?!
        int offset = code > 65535 ? 2 : 1;
        CharSequence substr = text.subSequence(i, i + offset);
        boolean canEncode = encoder.canEncode(substr);
        if (canEncode) {
            sb.append(substr);

which makes the fatal call to Charset.forName() that triggers the exception. The ASCII-8BIT charset name that it seems to dislike is taken from the Ruby-detected (?) charset of the input XML string:

github.com

logstash-plugins/logstash-filter-xml/blob/v4.0.5/lib/logstash/filters/xml.rb#L120-L144


value = event.get(@source)
return unless value


if value.is_a?(Array)
  if value.length != 1
    event.tag(XMLPARSEFAILURE_TAG)
    @logger.warn("XML filter expects single item array", :source => @source, :value => value)
    return
  end


  value = value.first
end


unless value.is_a?(String)
  event.tag(XMLPARSEFAILURE_TAG)
  @logger.warn("XML filter expects a string but received a #{value.class}", :source => @source, :value => value)
  return
end


# Do nothing with an empty string.

This file has been truncated. show original

My guess is that the input string isn't actually UTF-8 but some other charset that can't be detected, hence it falls back to the (bogus) ASCII-8BIT charset.

So, check your input file. Does it have any 8-bit characters? If so, is it really UTF-8?

wwalker · February 20, 2018, 5:45am

So it's not the pipeline, it's the file that's being parsed?

wwalker · February 20, 2018, 6:19am

I'm 100% certain it's not the file, unless something was changed between 6.1.1 and 6.2.1 in regards to how the XML filter works. I'm using the same ~200 xml files on both systems with the same pipeline. They work on 6.1.1 and not on 6.2.1.

I also ran through a couple different methods of changing the file encoding to UTF8 with same results in the logstash pipeline.

Notepad++, ensuring Encoding is set to UTF8
PowerShell Set-Content -Encoding UTF8
PowerShell Out-File -Encoding UTF8

magnusbaeck · February 20, 2018, 8:14am

The xml filter is unchanged between 6.1.1 and 6.2.1 but the Nokogiri XML library was bumped from 1.8.1 to 1.8.2, which contains a fix for https://github.com/sparklemotion/nokogiri/issues/1659 and that issue is clearly related to what you're seeing. However, it actually looks like that bugfix should've fixed the problem you're having, i.e. from the look of things it should've been 6.1.1 that was broken and 6.2.1 that was working. I clearly don't understand this so I won't dig any further.

warkolm · February 20, 2018, 8:23am

Thanks for that digging @magnusbaeck, seriously amazing stuff!

@wwalker would you be up to going back to the upstream library and raising this with them?

wwalker · February 20, 2018, 1:10pm

Haha, I definitely would be willing...if I understood anything you said. Is the upstream library Nokogiri and I'd submit the issue with them on github?

wwalker · February 23, 2018, 4:19am

Here's a fun twist, I found out how to make it work and what the difference was.

In my 6.1.1 implementation, I installed logstash as a service utilizing Non-Sucking Service Manager (NSSM) and then used -f pathtopipeline. If I remove the -f argument and try to load the config from pipelines.yml, it fails with the same error as above.

In 6.2.1, if I specify -f pathtopipeline, I still get the same error.

Topic		Replies	Views
XML LOGSTASH configuration Logstash	3	735	July 6, 2017
Logstash-6.5.2 filter worker crash with Exception in pipelineworker Logstash	1	881	January 4, 2019
Logstash 7.1.0 crashes occasionally (xml plugin) but v. 6.3.1 works fine Logstash	6	419	September 24, 2019
XML Filter Logstash 1.5.1 Logstash	1	708	July 6, 2017
Issue with logstash event feed Logstash	8	1389	February 11, 2018

Logstash Pipeline from 6.1 not working 6.2.1

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