# Input start fail

**URL:** <https://community.graylog.org/t/input-start-fail/6106>\
**Category:** Graylog Central (peer support)\
**Created:** [July 25, 2018, 3:48am UTC](https://community.graylog.org/t/input-start-fail/6106 "2018-07-25T03:48:03Z")\
**Posts on this page:** 10\
**Page:** 1

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**Author:** ![cherawich](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@cherawich](https://community.graylog.org/u/cherawich)\
**Post date:** [July 25, 2018, 3:48am UTC](https://community.graylog.org/t/input-start-fail/6106/1 "2018-07-25T03:48:03Z")

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![image](https://us1.discourse-cdn.com/flex016/uploads/graylog/original/2X/0/05545b559093a612187df8b4db325f80195768d8.png)  
 ![image](https://us1.discourse-cdn.com/flex016/uploads/graylog/original/2X/0/05545b559093a612187df8b4db325f80195768d8.png)

I have error input start failure but our environment still can sent log to Graylog.

Please explant to me

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**Author:** ![cherawich](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@cherawich](https://community.graylog.org/u/cherawich)\
**Post date:** [July 25, 2018, 3:48am UTC](https://community.graylog.org/t/input-start-fail/6106/2 "2018-07-25T03:48:28Z")

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![image](https://us1.discourse-cdn.com/flex016/uploads/graylog/original/2X/7/7bc0ce044f78a6f02dd66f274cd67d9903278cf9.jpg)

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**Author:** ![fjavier07](https://avatars.discourse-cdn.com/v4/letter/f/8797f3/32.png) [@fjavier07](https://community.graylog.org/u/fjavier07)\
**Post date:** [July 25, 2018, 6:46am UTC](https://community.graylog.org/t/input-start-fail/6106/3 "2018-07-25T06:46:39Z")

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Hi;

Once I had the same problem as you. In my case,the network interface associated with a particular input was down 😅.

On the other hand, do you have any other input configured to listen for the same port tcp/udp? (two inputs can not listen on the same port tcp/udp ). If this is not the case … have you tried restarting the graylog service? (on another occasion, the same thing happened to me, an input did not start and I resolved it by restarting the service)

I hope this helps.

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**Author:** ![cherawich](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@cherawich](https://community.graylog.org/u/cherawich)\
**Post date:** [July 25, 2018, 6:55am UTC](https://community.graylog.org/t/input-start-fail/6106/4 "2018-07-25T06:55:46Z")

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In this case use 514 port only.

I will try restart graylog service.

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**Author:** ![cherawich](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@cherawich](https://community.graylog.org/u/cherawich)\
**Post date:** [July 25, 2018, 6:58am UTC](https://community.graylog.org/t/input-start-fail/6106/5 "2018-07-25T06:58:45Z")

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I restart Graylog service by graylog-ctl reconfigure already but input still fail.

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**Author:** ![fjavier07](https://avatars.discourse-cdn.com/v4/letter/f/8797f3/32.png) [@fjavier07](https://community.graylog.org/u/fjavier07)\
**Post date:** [July 25, 2018, 7:15am UTC](https://community.graylog.org/t/input-start-fail/6106/6 "2018-07-25T07:15:03Z")

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Hi Chreawich;

How many inputs do you have ? What address, ports and protocol use each one ?

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**Author:** ![jan](https://sea2.discourse-cdn.com/flex016/user_avatar/community.graylog.org/jan/32/11_2.png) [@jan](https://community.graylog.org/u/jan)\
**Post date:** [July 25, 2018, 7:21am UTC](https://community.graylog.org/t/input-start-fail/6106/7 "2018-07-25T07:21:38Z")

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Does it show `fail` on the `System > Inputs` page or is this only the Warning you have? The Warning will not remove themself after resolve. You would need to `x` the message away.

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**Author:** ![cherawich](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@cherawich](https://community.graylog.org/u/cherawich)\
**Post date:** [July 25, 2018, 7:23am UTC](https://community.graylog.org/t/input-start-fail/6106/8 "2018-07-25T07:23:56Z")

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FYI

![image](https://us1.discourse-cdn.com/flex016/uploads/graylog/original/2X/6/6dc8d5b66399308084b60fa2b82f72fca4953f66.jpg)

 ![image](https://us1.discourse-cdn.com/flex016/uploads/graylog/original/2X/0/0c735d1a57e8ae2bfbc33048c2eb038a2c325c53.jpg)

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<div class="post-metadata">

**Author:** ![jan](https://sea2.discourse-cdn.com/flex016/user_avatar/community.graylog.org/jan/32/11_2.png) [@jan](https://community.graylog.org/u/jan)\
**Post date:** [July 25, 2018, 7:31am UTC](https://community.graylog.org/t/input-start-fail/6106/9 "2018-07-25T07:31:42Z")

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“low ports” does not work - please see this Part in the FAQ

[http://docs.graylog.org/en/2.4/pages/faq.html#how-can-i-start-an-input-on-a-port-below-1024](http://docs.graylog.org/en/2.4/pages/faq.html#how-can-i-start-an-input-on-a-port-below-1024)

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/graylog/original/3X/c/7/c7c09c6b5099570133d6502b83f50ba4430de5b6.png) [@system](https://community.graylog.org/u/system)\
**Post date:** [August 8, 2018, 7:31am UTC](https://community.graylog.org/t/input-start-fail/6106/10 "2018-08-08T07:31:42Z")

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Closed on August 8, 2018, 7:31am UTC

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