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Posted to users@httpd.apache.org by Scott Chapman <sc...@mischko.com> on 2009/11/25 00:27:39 UTC
[users@httpd] proxy 502 problem uploading a large file
I have Apache 2.2.11 and a web server behind it (CherryPy).
When I upload a large file to the CherryPy server, I see the file in
/tmp/modrproxy.tmp.FOO
It uploads completely.
Then Apache returns a 502 error without ever hitting the backend (the
first line of code in the handler is to spit out a log line saying it
was reached).
The access and error logs are below and my virtual host config.
I can't think what else to try. I was using RewriteRules for this.
Same situation.
This is a production server and it's having problems. Any help would be
greatly appreciated.
Scott
access log
<IPADDRESS> - - [24/Nov/2009:16:13:46 -0500] "POST
/lertwfm/addFileToCase HTTP/1.1" 502 422
error log
[Tue Nov 24 16:18:23 2009] [error] [client <IPADDRESS>] (70014)End of
file found: proxy: error reading status line from remote server
127.0.0.1, referer:
http://lertwfmdev.odc.vzwcorp.com/lertwfm/detail_edit_case?case_id=6667
[Tue Nov 24 16:18:23 2009] [error] [client <IPADDRESS>] proxy: Error
reading from remote server returned by /lertwfm/addFileToCase, referer:
http://lertwfmdev.odc.vzwcorp.com/lertwfm/detail_edit_case?case_id=6667
<VirtualHost *>
DocumentRoot "/opt/webapp/wfm"
ServerName foo.bar.com
ErrorLog "|/usr/local/apache2/bin/rotatelogs
/usr/local/apache2/logs/lert_wfm-error_log 86400"
CustomLog "|/usr/local/apache2/bin/rotatelogs
/usr/local/apache2/logs/lert_wfm-access_log 86400" common
<Location ~ "^/static/.*$">
FileETag None
ExpiresActive On
ExpiresDefault "access plus 2 hours"
Order allow,deny
allow from all
SetHandler default-handler
</Location>
ProxyPass /static/ !
ProxyPass /lertwfm/static/js/ !
ProxyPass /fax/ http://127.0.0.1:9010/fax/
ProxyPass / http://127.0.0.1:9000/ connectiontimeout=900 timeout=900
<Location ~ "^(?!/static/).*$">
Order allow,deny
allow from all
</Location>
</VirtualHost>
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RE: [users@httpd] proxy 502 problem uploading a large file
Posted by Prigge Scott <Pr...@JohnDeere.com>.
:D
I just saved you about a month worth of work...
Try adding this directive to your SM policy:
LegacyStreamingBehavior = YES
> -----Original Message-----
> From: Scott Chapman [mailto:schapman@mischko.com]
> Sent: Wednesday, November 25, 2009 8:46 AM
> To: users@httpd.apache.org
> Subject: Re: [users@httpd] proxy 502 problem uploading a large file
>
> Your post has the same stuff mine does. I'm using SiteMinder
> for enterprise single sign on via Apache. I turned it off
> and the upload worked.
>
> Thanks!
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Re: [users@httpd] proxy 502 problem uploading a large file
Posted by Scott Chapman <sc...@mischko.com>.
Your post has the same stuff mine does. I'm using SiteMinder for
enterprise single sign on via Apache. I turned it off and the upload
worked.
Thanks!
Prigge Scott wrote:
> Hi Scott, I recently posted a message to the group about a 502 error I was getting:
>
> http://mail-archives.apache.org/mod_mbox/httpd-users/200911.mbox/%3c9A7D6213F32E30428D8C94E8441C8AC85C8A8F3B@edxmb25.jdnet.deere.com%3e
>
> Given the description of your environment, it's not clear if my situation relates. But consider a possible TCP timeout with your back-end server. In my case, I was able to adjust a Linux parameter to increase the number of SYN-ACK packets the OS sent to keep the TCP connection alive - not a great solution, but a verified workaround.
>
>
>> -----Original Message-----
>> From: Scott Chapman [mailto:schapman@mischko.com]
>> Sent: Tuesday, November 24, 2009 5:28 PM
>> To: users@httpd.apache.org
>> Subject: [users@httpd] proxy 502 problem uploading a large file
>>
>> I have Apache 2.2.11 and a web server behind it (CherryPy).
>> When I upload a large file to the CherryPy server, I see the
>> file in /tmp/modrproxy.tmp.FOO It uploads completely.
>> Then Apache returns a 502 error without ever hitting the
>> backend (the first line of code in the handler is to spit out
>> a log line saying it was reached).
>>
>> The access and error logs are below and my virtual host config.
>> I can't think what else to try. I was using RewriteRules for this.
>> Same situation.
>>
>> This is a production server and it's having problems. Any
>> help would be greatly appreciated.
>>
>> Scott
>>
>
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>
>
>
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RE: [users@httpd] proxy 502 problem uploading a large file
Posted by Prigge Scott <Pr...@JohnDeere.com>.
Hi Scott, I recently posted a message to the group about a 502 error I was getting:
http://mail-archives.apache.org/mod_mbox/httpd-users/200911.mbox/%3c9A7D6213F32E30428D8C94E8441C8AC85C8A8F3B@edxmb25.jdnet.deere.com%3e
Given the description of your environment, it's not clear if my situation relates. But consider a possible TCP timeout with your back-end server. In my case, I was able to adjust a Linux parameter to increase the number of SYN-ACK packets the OS sent to keep the TCP connection alive - not a great solution, but a verified workaround.
> -----Original Message-----
> From: Scott Chapman [mailto:schapman@mischko.com]
> Sent: Tuesday, November 24, 2009 5:28 PM
> To: users@httpd.apache.org
> Subject: [users@httpd] proxy 502 problem uploading a large file
>
> I have Apache 2.2.11 and a web server behind it (CherryPy).
> When I upload a large file to the CherryPy server, I see the
> file in /tmp/modrproxy.tmp.FOO It uploads completely.
> Then Apache returns a 502 error without ever hitting the
> backend (the first line of code in the handler is to spit out
> a log line saying it was reached).
>
> The access and error logs are below and my virtual host config.
> I can't think what else to try. I was using RewriteRules for this.
> Same situation.
>
> This is a production server and it's having problems. Any
> help would be greatly appreciated.
>
> Scott
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Re: [users@httpd] proxy 502 problem uploading a large file
Posted by Scott Chapman <sc...@mischko.com>.
Boyle Owen wrote:
>> -----Original Message-----
>> From: Scott Chapman [mailto:schapman@mischko.com]
>> Sent: Wednesday, November 25, 2009 12:28 AM
>> To: users@httpd.apache.org
>> Subject: [users@httpd] proxy 502 problem uploading a large file
>>
>> I have Apache 2.2.11 and a web server behind it (CherryPy).
>> When I upload a large file to the CherryPy server, I see the file in
>> /tmp/modrproxy.tmp.FOO
>> It uploads completely.
>> Then Apache returns a 502 error without ever hitting the backend (the
>> first line of code in the handler is to spit out a log line saying it
>> was reached).
>>
>
> 502 is Bad Gateway, which means that apache and back-end had a protocol
> problem. Probably the back-end didn't handle the upload correctly. What
> do the back-end logs say?
>
> You mention a "large" file without saying what that means 1 Mb? 1 Gb? 1
> Tb? what happens with a "small" file (10 b, 1 kb, 10 kb...)?
>
> Rgds,
> Owen Boyle
> Disclaimer: Any disclaimer attached to this message may be ignored.
>
>
Large is 70mb. Small is 20mb. Small files work great. It's some kind of
timeout I think. The backend never got hit by Apache at all.
The backend handles the uploads fine when I hit it directly, out from
behind Apache.
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RE: [users@httpd] proxy 502 problem uploading a large file
Posted by Boyle Owen <Ow...@six-group.com>.
> -----Original Message-----
> From: Scott Chapman [mailto:schapman@mischko.com]
> Sent: Wednesday, November 25, 2009 12:28 AM
> To: users@httpd.apache.org
> Subject: [users@httpd] proxy 502 problem uploading a large file
>
> I have Apache 2.2.11 and a web server behind it (CherryPy).
> When I upload a large file to the CherryPy server, I see the file in
> /tmp/modrproxy.tmp.FOO
> It uploads completely.
> Then Apache returns a 502 error without ever hitting the backend (the
> first line of code in the handler is to spit out a log line saying it
> was reached).
502 is Bad Gateway, which means that apache and back-end had a protocol
problem. Probably the back-end didn't handle the upload correctly. What
do the back-end logs say?
You mention a "large" file without saying what that means 1 Mb? 1 Gb? 1
Tb? what happens with a "small" file (10 b, 1 kb, 10 kb...)?
Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may be ignored.
>
> The access and error logs are below and my virtual host config.
> I can't think what else to try. I was using RewriteRules for this.
> Same situation.
>
> This is a production server and it's having problems. Any
> help would be
> greatly appreciated.
>
> Scott
>
>
> access log
> <IPADDRESS> - - [24/Nov/2009:16:13:46 -0500] "POST
> /lertwfm/addFileToCase HTTP/1.1" 502 422
>
> error log
> [Tue Nov 24 16:18:23 2009] [error] [client <IPADDRESS>] (70014)End of
> file found: proxy: error reading status line from remote server
> 127.0.0.1, referer:
> http://lertwfmdev.odc.vzwcorp.com/lertwfm/detail_edit_case?cas
e_id=6667
> [Tue Nov 24 16:18:23 2009] [error] [client <IPADDRESS>] proxy: Error
> reading from remote server returned by
> /lertwfm/addFileToCase, referer:
> http://lertwfmdev.odc.vzwcorp.com/lertwfm/detail_edit_case?cas
e_id=6667
>
>
> <VirtualHost *>
> DocumentRoot "/opt/webapp/wfm"
> ServerName foo.bar.com
> ErrorLog "|/usr/local/apache2/bin/rotatelogs
> /usr/local/apache2/logs/lert_wfm-error_log 86400"
> CustomLog "|/usr/local/apache2/bin/rotatelogs
> /usr/local/apache2/logs/lert_wfm-access_log 86400" common
>
> <Location ~ "^/static/.*$">
> FileETag None
>
> ExpiresActive On
> ExpiresDefault "access plus 2 hours"
>
> Order allow,deny
> allow from all
> SetHandler default-handler
> </Location>
>
> ProxyPass /static/ !
> ProxyPass /lertwfm/static/js/ !
> ProxyPass /fax/ http://127.0.0.1:9010/fax/
> ProxyPass / http://127.0.0.1:9000/ connectiontimeout=900 timeout=900
>
> <Location ~ "^(?!/static/).*$">
> Order allow,deny
> allow from all
> </Location>
>
> </VirtualHost>
>
>
>
> ---------------------------------------------------------------------
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> Server Project.
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