Empty /error log lines (a lot of them)

[Cabbar Duzayak]

Hi,

Upon further investigation, it turned out to be coming from chrome
browser actually... I could not find why it is doing that (it was not
shown in its network details page nor developer tools), but every once
in a while it is going crazy and sending 4-5 requests at a time. And,
it looked like these were generated from the browser right after a
facebook call. And number of requests varies as well, sometimes it is
just one request, sometimes it is 4 at a time.

BTW, FF is not doing this.

As Michael was saying, this is causing unnecessary I/O, disk space,
etc. And, wish there was a way of disabling this!

Can we at least tell Nginx not to log these? Something like, if there
is no http method / url, skip the log?

Thanks...


On Wed, Jan 4, 2012 at 3:55 AM, Michael Kliewe <m.kliewe at team.mail.de> wrote:
> Hi,
>
> I also have a lot of these lines in my logs on all nginx webservers, they
> are a result of loadbalancers or nagios/icinga or something that is checking
> your webservers port for availability, some kind of half open connection
> without a full http request. If there would be any configuration setting to
> disable these entries that would be great, would save I/O and disk space ;-)
>
> Michael
>
> Am 03.01.2012 14:32, schrieb Cabbar Duzayak:
>>
>> Hi,
>>
>> I am using NGINX 0.8.54 on Ubuntu 11.04, and I am getting a lot of
>> weird log entries in nginx access file. The structure is somewhat like
>> below, but as  you can see there is no method, URL, referer, user
>> agent, etc. And, I see bunch of entries for different IP addresses (3
>> to 30-40 entries per IP)
>>
>> It might be a browser issue, but since I am seeing a lot of these, I
>> just wanted to ask here if anyone has seen this before.
>>
>> Thanks...
>>
>>
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:11:22 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:11:22 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:11:52 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:11:52 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:11:52 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:11:52 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:11:52 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:12:32 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:12:32 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:12:32 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:12:32 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:12:32 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:13:22 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:13:22 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:13:22 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:13:22 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:13:22 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:13:22 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:17:52 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:17:52 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:17:52 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:17:52 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:20:02 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:20:02 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:20:02 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:45:56 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:45:56 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:45:56 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:45:56 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:45:56 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:46:16 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:46:16 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:46:16 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:46:16 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:46:16 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:46:56 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:46:56 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:46:56 +0300] "-" 400 0 "-" "-"
>> <USER_IP_ADDRESS>  - - [07/Oct/2011:17:49:46 +0300] "-" 400 0 "-" "-"
>>
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