# Filebeat6.6.1 start up failed

**URL:** <https://discuss.elastic.co/t/filebeat6-6-1-start-up-failed/171236>\
**Category:** Beats\
**Tags:** filebeat\
**Created:** [March 7, 2019, 6:33am UTC](https://discuss.elastic.co/t/filebeat6-6-1-start-up-failed/171236 "2019-03-07T06:33:15Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ly217](https://avatars.discourse-cdn.com/v4/letter/l/41988e/32.png) [@ly217](https://discuss.elastic.co/u/ly217)\
**Post date:** [March 7, 2019, 6:33am UTC](https://discuss.elastic.co/t/filebeat6-6-1-start-up-failed/171236/1 "2019-03-07T06:33:15Z")

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the filebeat version is 6.6.1,the os version Red Hat Enterprise Linux Server release 5.7,when start up filebeat ,it failed.the log showed:  
runtime: epollwait on fd 4 failed with 38  
fatal error: runtime: netpoll failed

runtime stack:  
runtime.throw(0x1795cdd, 0x17)  
/usr/local/go/src/runtime/panic.go:616 +0x81  
runtime.netpoll(0x12a7cef4ee0000, 0x0)  
/usr/local/go/src/runtime/netpoll\_epoll.go:75 +0x216  
runtime.sysmon()  
/usr/local/go/src/runtime/proc.go:4265 +0x424  
runtime.mstart1(0x0)  
/usr/local/go/src/runtime/proc.go:1227 +0xe7  
runtime.mstart()  
/usr/local/go/src/runtime/proc.go:1193 +0x76

goroutine 1 [runnable, locked to thread]:  
io.init()  
:1 +0x2e5

goroutine 6 [runnable]:  
os/signal.loop()  
/usr/local/go/src/os/signal/signal\_unix.go:20  
created by os/signal.init.0  
/usr/local/go/src/os/signal/signal\_unix.go:28 +0x41

I need some help,thanks.

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**Author:** ![Wolfram\_Haussig](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wolfram_haussig/32/70528_2.png) [@Wolfram\_Haussig](https://discuss.elastic.co/u/Wolfram_Haussig)\
**Post date:** [March 7, 2019, 6:39am UTC](https://discuss.elastic.co/t/filebeat6-6-1-start-up-failed/171236/2 "2019-03-07T06:39:22Z")

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Hi,

We had the same problem - as RHEL 5.x is not supported by the Go language anymore the Beats won't work. You need at least RHEL 6.x: [https://www.elastic.co/de/support/matrix](https://www.elastic.co/de/support/matrix)

If for any reason you have to still work with RHEL 5.x you might want to check out LogStash and its file-input.

Best regards  
Wolfram

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<div class="post-metadata">

**Author:** ![ly217](https://avatars.discourse-cdn.com/v4/letter/l/41988e/32.png) [@ly217](https://discuss.elastic.co/u/ly217)\
**Post date:** [March 7, 2019, 6:47am UTC](https://discuss.elastic.co/t/filebeat6-6-1-start-up-failed/171236/3 "2019-03-07T06:47:18Z")

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thanks,but if i start up filebeat 6.2.3.It can work. Just the version 6.6.1,it is not worked!

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<div class="post-metadata">

**Author:** ![Wolfram\_Haussig](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wolfram_haussig/32/70528_2.png) [@Wolfram\_Haussig](https://discuss.elastic.co/u/Wolfram_Haussig)\
**Post date:** [March 7, 2019, 6:54am UTC](https://discuss.elastic.co/t/filebeat6-6-1-start-up-failed/171236/4 "2019-03-07T06:54:02Z")

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I guess this is because Beats 6.3 upgraded go to version 1.9.4: [https://www.elastic.co/guide/en/beats/libbeat/current/release-notes-6.3.0.html#\_added\_8](https://www.elastic.co/guide/en/beats/libbeat/current/release-notes-6.3.0.html#_added_8)

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<div class="post-metadata">

**Author:** ![ly217](https://avatars.discourse-cdn.com/v4/letter/l/41988e/32.png) [@ly217](https://discuss.elastic.co/u/ly217)\
**Post date:** [March 7, 2019, 6:55am UTC](https://discuss.elastic.co/t/filebeat6-6-1-start-up-failed/171236/5 "2019-03-07T06:55:38Z")

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ok ,thanks!

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 4, 2019, 6:55am UTC](https://discuss.elastic.co/t/filebeat6-6-1-start-up-failed/171236/6 "2019-04-04T06:55:41Z")

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