VyOS flow-accounting not recognized by Elastiflow

[xomka686]

Hello Rob,

I recently set up Elastiflow 3.3.0 on ELK 6.3.0. All is working smooth, IPFIX and Netflow v9 from Cisco devices is collected and graphed like a charm. But I have an issue with collecting Netflow v5/v9 from VyOS devices. The VyOS version is 1.2.0 and flows are verified to reach the machine with Elastiflow on a correct UDP port. What logs can I collect from the Elastiflow machine to diagnose the problem?

[robcowart]

I use VyOS 1.1.8 without any issue, however I haven't tested 1.2.0. Can you provide me a PCAP of the flow records (please let it run long enough to get a template record as well as some flows) so that I can investigate.

[xomka686]

Hi Rob,

Sorry for the long delay, I recently sent you an e-mail with PCAP files for NetFlow v9 from VyOS 1.2.0 attached.

[xomka686]

Hi Rob,

Did you have a chance to take a look at it?

[xomka686]

Hi Rob,

Sorry for disturbing again. Did you receive .pcap files from me on the e-mail?

[robcowart]

I have was able to test using the data in the PCAP you provided and it works fine for me. What is the error that you see?

[robcowart]

The only thing I notice is the time in the flows as seen in the PCAP is July 2018. Logstash will assign this time from the flow record to @timestamp. Either your clock is set wrong, or the VyOS flow accounting daemon has a bug. If you look in the time period from summer 2018, you should see the data.

[xomka686]

Great thanks for coming back on this and clarifications about timestamps! I will check timestamps and let you know the results.

[xomka686]

I checked, after setting up a correct date and time on a VyOS machine I got Netflow v9 collected and graphed correctly. Thanks for the assistance in finding the root cause, Rob!

[sliddjur]

Hello @robcowart can I reopen this. I am using VyOS with latest elastiflow freshly installed today. I use ipfix and I am getting these messages:

[2019-12-19T14:35:06,059][WARN ][logstash.codecs.netflow  ][elastiflow] Can't (yet) decode flowset id 1024 from observation domain id 0, because no template to decode it with has been received. This message will usually go away after 1 minute.
[2019-12-19T14:35:06,067][WARN ][logstash.codecs.netflow  ][elastiflow] Can't (yet) decode flowset id 1024 from observation domain id 0, because no template to decode it with has been received. This message will usually go away after 1 minute.

I have a pcap file of the template file aswell. Where can I email you template and maybe you can have a look?

[robcowart]

elastiflow@gmail.com

[sliddjur]

Ok it is sent. I should add this is on a VyOS 1.2.3

[robcowart]

The log above mentions flowset id 1024, but the PCAP contains only 256, 257, 258 and 259. Is there perhaps another device sending flows?

[sliddjur]

my bad, I searched for the wrong file in my local system... I just re-sent you the correct one.

[sliddjur]

Will also add a long logmessage I got in logstash... Also I changed to send ipfix on port 4739 instead of 2055. Still same error message though

I added the elastiflow error that comes up once in a while aswell. Dont know if thats a error from template?

des. 19 15:55:03 server-app001 logstash[27041]: [2019-12-19T15:55:03,109][ERROR][logstash.inputs.udp      ][elastiflow] Exception in inputworker {"exception"=>java.lang.ClassCastException: org.jruby.gen.RubyObject4 cannot be cast to org.jruby.RubyFixnum, "backtrace"=>["org.jruby.runtime.invokedynamic.MathLinker.fixnum_op_gt(MathLinker.java:249)", "java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:627)", "org.jruby.runtime.invokedynamic.MathLinker.fixnumOperator(MathLinker.java:171)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_codec_minus_netflow_minus_4_dot_2_dot_1.lib.logstash.codecs.netflow.RUBY$block$decode_netflow9$3(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-codec-netflow-4.2.1/lib/logstash/codecs/netflow.rb:174)", "org.jruby.runtime.CompiledIRBlockBody.yieldDirect(CompiledIRBlockBody.java:146)", "org.jruby.runtime.BlockBody.yield(BlockBody.java:114)", "org.jruby.runtime.Block.yield(Block.java:170)", "org.jruby.ir.runtime.IRRuntimeHelpers.yield(IRRuntimeHelpers.java:477)", "org.jruby.ir.targets.YieldSite.yield(YieldSite.java:105)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$block$each$1(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:208)", "org.jruby.runtime.CompiledIRBlockBody.yieldDirect(CompiledIRBlockBody.java:146)", "org.jruby.runtime.BlockBody.yield(BlockBody.java:114)", "org.jruby.runtime.Block.yield(Block.java:170)", "org.jruby.RubyArray.each(RubyArray.java:1800)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$method$each$0(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:208)", 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des. 19 16:19:07 server-app001 logstash[27041]: [2019-12-19T16:19:07,513][WARN ][logstash.codecs.netflow  ][elastiflow] Can't (yet) decode flowset id 1024 from observation domain id 0, because no template to decode it with has been received. This message will usually go away after 1 minute.
des. 19 16:19:07 server-app001 logstash[27041]: [2019-12-19T16:19:07,514][WARN ][logstash.codecs.netflow  ][elastiflow] Can't (yet) decode flowset id 1024 from observation domain id 0, because no template to decode it with has been received. This message will usually go away after 1 minute.
des. 19 16:19:07 server-app001 logstash[27041]: [2019-12-19T16:19:07,530][ERROR][logstash.inputs.udp      ][elastiflow] Exception in inputworker {"exception"=>java.lang.NullPointerException, "backtrace"=>["org.jruby.runtime.invokedynamic.InvokeDynamicSupport.callMethodMissing(InvokeDynamicSupport.java:86)", "org.jruby.runtime.invokedynamic.MathLinker.callMethod(MathLinker.java:418)", "org.jruby.runtime.invokedynamic.MathLinker.fixnumOperatorFail(MathLinker.java:209)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_codec_minus_netflow_minus_4_dot_2_dot_1.lib.logstash.codecs.netflow.RUBY$method$uint_field$0(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-codec-netflow-4.2.1/lib/logstash/codecs/netflow.rb:391)", 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"usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$block$each$1(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:208)", "org.jruby.runtime.CompiledIRBlockBody.yieldDirect(CompiledIRBlockBody.java:146)", "org.jruby.runtime.BlockBody.yield(BlockBody.java:114)", "org.jruby.runtime.Block.yield(Block.java:170)", "org.jruby.RubyArray.each(RubyArray.java:1800)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$method$each$0(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:208)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$method$each$0$__VARARGS__(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb)", "org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:91)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:90)", "org.jruby.ir.targets.InvokeSite.fail(InvokeSite.java:223)", "org.jruby.ir.targets.InvokeSite.fail(InvokeSite.java:230)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_codec_minus_netflow_minus_4_dot_2_dot_1.lib.logstash.codecs.netflow.RUBY$method$decode$0(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-codec-netflow-4.2.1/lib/logstash/codecs/netflow.rb:104)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_input_minus_udp_minus_3_dot_3_dot_4.lib.logstash.inputs.udp.RUBY$method$inputworker$0(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-input-udp-3.3.4/lib/logstash/inputs/udp.rb:151)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_input_minus_udp_minus_3_dot_3_dot_4.lib.logstash.inputs.udp.RUBY$method$inputworker$0$__VARARGS__(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-input-udp-3.3.4/lib/logstash/inputs/udp.rb)", "org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:91)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:90)", "org.jruby.ir.targets.InvokeSite.invoke(InvokeSite.java:183)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_input_minus_udp_minus_3_dot_3_dot_4.lib.logstash.inputs.udp.RUBY$block$run$2(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-input-udp-3.3.4/lib/logstash/inputs/udp.rb:63)", "org.jruby.runtime.CompiledIRBlockBody.callDirect(CompiledIRBlockBody.java:136)", "org.jruby.runtime.IRBlockBody.call(IRBlockBody.java:77)", "org.jruby.runtime.Block.call(Block.java:129)", "org.jruby.RubyProc.call(RubyProc.java:295)", "org.jruby.RubyProc.call(RubyProc.java:274)", "org.jruby.RubyProc.call(RubyProc.java:270)", "org.jruby.internal.runtime.RubyRunnable.run(RubyRunnable.java:105)", "java.lang.Thread.run(Thread.java:748)"]}

[robcowart]

Fixed in 3.5.3.

[sliddjur]

Thanks for a quick update! However I am still getting the same error. Updated to 3.5.3 and restarted elasticsearch, logstash and kibana.

$ journalctl -fu logstash
des. 19 23:38:08 server-app001 logstash[29831]: [2019-12-19T23:38:08,655][ERROR][logstash.inputs.udp      ][elastiflow] Exception in inputworker {"exception"=>java.lang.NullPointerException, "backtrace"=>["org.jruby.runtime.invokedynamic.InvokeDynamicSupport.callMethodMissing(InvokeDynamicSupport.java:86)", "org.jruby.runtime.invokedynamic.MathLinker.callMethod(MathLinker.java:418)", "org.jruby.runtime.invokedynamic.MathLinker.fixnumOperatorFail(MathLinker.java:209)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_codec_minus_netflow_minus_4_dot_2_dot_1.lib.logstash.codecs.netflow.RUBY$method$uint_field$0(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-codec-netflow-4.2.1/lib/logstash/codecs/netflow.rb:391)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_codec_minus_netflow_minus_4_dot_2_dot_1.lib.logstash.codecs.netflow.RUBY$method$ipfix_field_for$0(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-codec-netflow-4.2.1/lib/logstash/codecs/netflow.rb:518)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_codec_minus_netflow_minus_4_dot_2_dot_1.lib.logstash.codecs.netflow.RUBY$block$decode_ipfix$3(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-codec-netflow-4.2.1/lib/logstash/codecs/netflow.rb:299)", "org.jruby.runtime.CompiledIRBlockBody.yieldDirect(CompiledIRBlockBody.java:146)", "org.jruby.runtime.BlockBody.yield(BlockBody.java:114)", "org.jruby.runtime.Block.yield(Block.java:170)", "org.jruby.ir.runtime.IRRuntimeHelpers.yield(IRRuntimeHelpers.java:477)", "org.jruby.ir.targets.YieldSite.yield(YieldSite.java:105)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$block$each$1(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:208)", "org.jruby.runtime.CompiledIRBlockBody.yieldDirect(CompiledIRBlockBody.java:146)", "org.jruby.runtime.BlockBody.yield(BlockBody.java:114)", "org.jruby.runtime.Block.yield(Block.java:170)", "org.jruby.RubyArray.each(RubyArray.java:1800)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$method$each$0(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:208)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$method$each$0$__VARARGS__(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb)", "org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:91)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:90)", "org.jruby.ir.targets.InvokeSite.invoke(InvokeSite.java:177)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_codec_minus_netflow_minus_4_dot_2_dot_1.lib.logstash.codecs.netflow.RUBY$block$decode_ipfix$2(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-codec-netflow-4.2.1/lib/logstash/codecs/netflow.rb:294)", "org.jruby.runtime.CompiledIRBlockBody.yieldDirect(CompiledIRBlockBody.java:146)", "org.jruby.runtime.BlockBody.yield(BlockBody.java:114)", "org.jruby.runtime.Block.yield(Block.java:170)", "org.jruby.exceptions.CatchThrow.enter(CatchThrow.java:32)", "org.jruby.RubyKernel.rbCatch19Common(RubyKernel.java:1197)", "org.jruby.RubyKernel.rbCatch19(RubyKernel.java:1193)", "org.jruby.RubyKernel$INVOKER$s$rbCatch19.call(RubyKernel$INVOKER$s$rbCatch19.gen)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_codec_minus_netflow_minus_4_dot_2_dot_1.lib.logstash.codecs.netflow.RUBY$block$decode_ipfix$1(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-codec-netflow-4.2.1/lib/logstash/codecs/netflow.rb:290)", "org.jruby.runtime.CompiledIRBlockBody.yieldDirect(CompiledIRBlockBody.java:146)", "org.jruby.runtime.BlockBody.yield(BlockBody.java:114)", "org.jruby.runtime.Block.yield(Block.java:170)", "org.jruby.ir.runtime.IRRuntimeHelpers.yield(IRRuntimeHelpers.java:477)", "org.jruby.ir.targets.YieldSite.yield(YieldSite.java:105)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$block$each$1(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:208)", "org.jruby.runtime.CompiledIRBlockBody.yieldDirect(CompiledIRBlockBody.java:146)", "org.jruby.runtime.BlockBody.yield(BlockBody.java:114)", "org.jruby.runtime.Block.yield(Block.java:170)", "org.jruby.RubyArray.each(RubyArray.java:1800)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$method$each$0(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:208)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$method$each$0$__VARARGS__(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb)", "org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:91)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:90)", "org.jruby.ir.targets.InvokeSite.invoke(InvokeSite.java:177)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_codec_minus_netflow_minus_4_dot_2_dot_1.lib.logstash.codecs.netflow.RUBY$method$decode_ipfix$0(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-codec-netflow-4.2.1/lib/logstash/codecs/netflow.rb:289)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_codec_minus_netflow_minus_4_dot_2_dot_1.lib.logstash.codecs.netflow.RUBY$block$decode$5(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-codec-netflow-4.2.1/lib/logstash/codecs/netflow.rb:105)", "org.jruby.runtime.CompiledIRBlockBody.yieldDirect(CompiledIRBlockBody.java:146)", "org.jruby.runtime.BlockBody.yield(BlockBody.java:114)", "org.jruby.runtime.Block.yield(Block.java:170)", "org.jruby.ir.runtime.IRRuntimeHelpers.yield(IRRuntimeHelpers.java:477)", "org.jruby.ir.targets.YieldSite.yield(YieldSite.java:105)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$block$each$1(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:208)", "org.jruby.runtime.CompiledIRBlockBody.yieldDirect(CompiledIRBlockBody.java:146)", "org.jruby.runtime.BlockBody.yield(BlockBody.java:114)", "org.jruby.runtime.Block.yield(Block.java:170)", "org.jruby.RubyArray.each(RubyArray.java:1800)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$method$each$0(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb:208)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.bindata_minus_2_dot_4_dot_4.lib.bindata.array.RUBY$method$each$0$__VARARGS__(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/bindata-2.4.4/lib/bindata/array.rb)", "org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:91)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:90)", "org.jruby.ir.targets.InvokeSite.fail(InvokeSite.java:223)", "org.jruby.ir.targets.InvokeSite.fail(InvokeSite.java:230)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_codec_minus_netflow_minus_4_dot_2_dot_1.lib.logstash.codecs.netflow.RUBY$method$decode$0(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-codec-netflow-4.2.1/lib/logstash/codecs/netflow.rb:104)", "org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:91)", "org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:114)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:156)", "org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:182)", "org.jruby.runtime.callsite.CachingCallSite.callIter(CachingCallSite.java:191)", "org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:337)", "org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:72)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:105)", "org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:92)", "org.jruby.ir.targets.InvokeSite.invoke(InvokeSite.java:183)", "usr.share.logstash.vendor.bundle.jruby.$2_dot_5_dot_0.gems.logstash_minus_input_minus_udp_minus_3_dot_3_dot_4.lib.logstash.inputs.udp.RUBY$block$run$2(/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/logstash-input-udp-3.3.4/lib/logstash/inputs/udp.rb:63)", "org.jruby.runtime.CompiledIRBlockBody.callDirect(CompiledIRBlockBody.java:136)", "org.jruby.runtime.IRBlockBody.call(IRBlockBody.java:77)", "org.jruby.runtime.Block.call(Block.java:129)", "org.jruby.RubyProc.call(RubyProc.java:295)", "org.jruby.RubyProc.call(RubyProc.java:274)", "org.jruby.RubyProc.call(RubyProc.java:270)", "org.jruby.internal.runtime.RubyRunnable.run(RubyRunnable.java:105)", "java.lang.Thread.run(Thread.java:748)"]}
des. 19 23:42:10 server-app001 logstash[29831]: [2019-12-19T23:42:10,074][WARN ][logstash.codecs.netflow  ][elastiflow] Can't (yet) decode flowset id 1024 from observation domain id 0, because no template to decode it with has been received. This message will usually go away after 1 minute.

[robcowart]

What version of Logstash?

[sliddjur]

:/usr/share/logstash/bin# ./logstash --version logstash 7.5.1

[robcowart]

You need to downgrade Logstash to 7.3.2 (ES and Kibana can stay 7.5.x).

https://github.com/robcowart/elastiflow/issues/427#issuecomment-548927460