# Nginx Warn Log

**URL:** <https://www.ruby-forum.com/t/nginx-warn-log/200928>\
**Category:** NGINX\
**Created:** [December 25, 2010, 9:10am UTC](https://www.ruby-forum.com/t/nginx-warn-log/200928 "2010-12-25T09:10:31Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![nikuSESS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/f17d59/32.png) [@nikuSESS](https://www.ruby-forum.com/u/nikuSESS)\
**Post date:** [December 25, 2010, 9:10am UTC](https://www.ruby-forum.com/t/nginx-warn-log/200928/1 "2010-12-25T09:10:31Z")

</div>

Hi;  
I’m Installing (reverse proxy) Nginx on CentOS, running CPanel / WHM. I  
get the following error for a continuous domain. This domain name is  
parked.

Log  
2010/12/24 02:06:36 [warn] 31794#0: \*6387 an upstream response is  
buffered to a temporary file /usr/local/nginx/proxy\_temp/8/00/0000000008  
while reading upstream, client: 80.99.162.219, server: [domainparked.com](http://domainparked.com),  
request: “GET /download/file.exe HTTP/1.1”, upstream:  
“[http://serverip:81/download/file.exe](http://serverip:81/download/file.exe)”, host: “[domainparked.com](http://domainparked.com)”,  
referrer: “[http://domainparked.com/download.htm](http://domainparked.com/download.htm)”

Posted at Nginx Forum:

> **[Nginx Warn Log](https://forum.nginx.org/read.php?2,161001,161001#msg-161001)**
>
> Hi; I'm Installing (reverse proxy) Nginx on CentOS, running CPanel / WHM. I get the following error for a continuous domain. This domain name is parked. Log 2010/12/24 02:06:36 \[warn\] 31794#0: \*6387 an upstream response is buffered to a temporary...

---

<div class="post-metadata">

**Author:** ![codetr](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/71c47a/32.png) [@codetr](https://www.ruby-forum.com/u/codetr)\
**Post date:** [December 25, 2010, 1:16pm UTC](https://www.ruby-forum.com/t/nginx-warn-log/200928/2 "2010-12-25T13:16:30Z")

</div>

Hello!

On Sat, Dec 25, 2010 at 03:09:37AM -0500, codetr wrote:

> “[http://serverip:81/download/file.exe](http://serverip:81/download/file.exe)”, host: “[domainparked.com](http://domainparked.com)”,  
> referrer: “[http://domainparked.com/download.htm](http://domainparked.com/download.htm)”

nginx logs warning as long as it buffers upstream response to  
disk. You may want to tune proxy\_buffers to avoid disk buffering,  
see docs for details. Or just ignore it if disk buffering is  
expected.

Maxim D.

---

<div class="post-metadata">

**Author:** ![codetr](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/71c47a/32.png) [@codetr](https://www.ruby-forum.com/u/codetr)\
**Post date:** [December 25, 2010, 3:47pm UTC](https://www.ruby-forum.com/t/nginx-warn-log/200928/3 "2010-12-25T15:47:28Z")

</div>

I added the line `
proxy_buffering off;
`  
for parkeddomain and problem seems solved… recommended for performance  
or stability can have a different setting vhost.conf and nginx.conf  
thanks.

my vhost.conf

```auto
server {
access_log off;

error_log /var/log/nginx/error.log warn;
listen 80;
server_name maindomain.com www.maindomain.com;

# uncomment location below to make nginx serve static files instead of
Apache
# NOTE this will cause issues with bandwidth accounting as files wont be
logged
location ~* \.(gif|jpg|jpeg|png|ico|js|css|exe|zip|rar)$ {
root /home/user/public_html;
}

location / {
proxy_send_timeout 90;
proxy_read_timeout 90;

proxy_buffer_size 4k;
# you can increase proxy_buffers here to suppress "an upstream response
# is buffered to a temporary file" warning
proxy_buffers 16 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;

proxy_connect_timeout 30s;

proxy_redirect http://www.maindomain.com:81 http://www.maindomain.com;
proxy_redirect http://maindomain.com:81 http://maindomain.com;

proxy_pass http://serverip:81/;

proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
server {
access_log off;

error_log /var/log/nginx/error.log warn;
listen 80;
server_name forum.maindomain.com www.forum.maindomain.com;

# uncomment location below to make nginx serve static files instead of
Apache
# NOTE this will cause issues with bandwidth accounting as files wont be
logged
location ~* \.(gif|jpg|jpeg|ico|png|js|css)$ {
root /home/user/public_html/community;
}

location / {
proxy_send_timeout 90;
proxy_read_timeout 90;

proxy_buffer_size 4k;
# you can increase proxy_buffers here to suppress "an upstream response
# is buffered to a temporary file" warning
proxy_buffers 16 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;

proxy_connect_timeout 30s;

proxy_redirect http://www.forum.maindomain.com:81
http://www.forum.maindomain.com;
proxy_redirect http://forum.maindomain.com:81
http://forum.maindomain.com;

proxy_pass http://serverip:81/;

proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
server {
access_log off;

error_log /var/log/nginx/error.log warn;
listen 80;
server_name domainparked.com www.domainparked.com;

# uncomment location below to make nginx serve static files instead of
Apache
# NOTE this will cause issues with bandwidth accounting as files wont be
logged
#location ~* \.(gif|jpg|jpeg|png|ico|js|css|exe|zip|rar)$ {
#root /home/user/public_html;
#}

location / {
proxy_send_timeout 90;
proxy_read_timeout 90;

proxy_buffering off; #add this line
#proxy_buffer_size 4k;
# you can increase proxy_buffers here to suppress "an upstream response
# is buffered to a temporary file" warning
#proxy_buffers 16 32k;
#proxy_busy_buffers_size 64k;
#proxy_temp_file_write_size 64k;

proxy_connect_timeout 30s;

proxy_redirect http://www.domainparked.com:81
http://www.domainparked.com;
proxy_redirect http://domainparked.com:81 http://domainparked.com;

proxy_pass http://serverip:81/;

proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
```

Posted at Nginx Forum:

> **[Re: Nginx Warn Log](https://forum.nginx.org/read.php?2,161001,161013#msg-161013)**
>
> Hi; I'm Installing (reverse proxy) Nginx on CentOS, running CPanel / WHM. I get the following error for a continuous domain. This domain name is parked. Log 2010/12/24 02:06:36 \[warn\] 31794#0: \*6387 an upstream response is buffered to a temporary...

---

<div class="post-metadata">

**Author:** ![codetr](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/71c47a/32.png) [@codetr](https://www.ruby-forum.com/u/codetr)\
**Post date:** [December 25, 2010, 5:31pm UTC](https://www.ruby-forum.com/t/nginx-warn-log/200928/4 "2010-12-25T17:31:30Z")

</div>

Hello!

On Sat, Dec 25, 2010 at 09:46:14AM -0500, codetr wrote:

> I added the line `
> proxy_buffering off;
> `  
> for parkeddomain and problem seems solved.. recommended for performance  
> or stability can have a different setting vhost.conf and nginx.conf  
> thanks.

Switching off proxy\_buffering just to suppress warning about disk  
buffering is bad idea. If you want to disable disk buffering  
completely - use

```
proxy_max_temp_file_size 0;

```

instead.

Maxim D.