Upload module can not upload file (Permission denied)

Hi,
I am trying to use upload moduel to upload file.
I am following the instructions:
http://www.grid.net.ru/nginx/upload.en.html

However, I encountered “503 Service Temporarily Unavailable”.

When I looked at error.log, I have following messages:

47 2011/03/28 12:59:52 [notice] 16529#0: nginx/0.8.54
48 2011/03/28 12:59:52 [notice] 16529#0: built by gcc 4.1.2 20080704
(Red Hat 4.1.2-48)
49 2011/03/28 12:59:52 [notice] 16529#0: OS: Linux 2.6.18-194.32.1.el5
50 2011/03/28 12:59:52 [notice] 16529#0: getrlimit(RLIMIT_NOFILE):
1024:1024
51 2011/03/28 12:59:52 [notice] 16530#0: start worker processes
52 2011/03/28 12:59:52 [notice] 16530#0: start worker process 16531
53 2011/03/28 13:00:01 [error] 16531#0: *1 failed to create output file
“/home/virus/tmp/0000000001” for “index. html” (13: Permission
denied), client: 127.0.0.1, server: , request: “POST /upload HTTP/1.1”,
host: “127.0.0. 1”, referrer: “http://127.0.0.1/

Even I use root to run the nginx, I still have the problem. I can
“touch” the file in /home/virus/tmp directory.

Could anyone help me to figure out the issue?
Thanks
Yanxin

Even I use root to run the nginx, I still have the problem. I can
“touch” the file in /home/virus/tmp directory.

It’s only master process who starts with root, and this process
initiates worker process started with permissions of user mentioned in
nginx.conf.


Regards, Vitaly T.
System A.
U.S. +1 (206) 905-9939
Russia +7 911 094-2035

Thank you for your help.

I changed chmod 777 for /tmp. The access issue is solved.
However, I encountered another problem.

82 2011/03/28 13:19:11 [notice] 17231#0: start worker process 17232
83 2011/03/28 13:19:20 [error] 17232#0: *1 connect() failed (111:
Connection refused) while connecting to upstream, client:
127.0.0.1, server: , request: “POST /upload HTTP/1.1”, upstream:
http://127.0.0.1:8080/ upload”, host: “127.0.0.1”, referrer:
http://127.0.0.1/

My configure file is here:
1 worker_processes 1;
2
3 error_log logs/error.log notice;
4
5 working_directory /opt/nginx;
6
7 events {
8 worker_connections 1024;
9 }
10
11 http {
12 include mime.types;
13 default_type application/octet-stream;
14

15 server {
16 listen 80;
17 client_max_body_size 100m;
18
19 location / {
20 root html;
21 index index.html;
22 }
23
24 # Upload form should be submitted to this location
25 location /upload {
26 # Pass altered request body to this location
27 upload_pass @test;
28
29 # Store files to this directory
30 # The directory is hashed, subdirectories 0 1 2 3 4 5 6
7 8 9 should exist
31 upload_store /tmp;
32
33 # Allow uploaded files to be read only by user
34 upload_store_access user:rw group:rw all:rw;
35
36 # Set specified fields in request body
37 upload_set_form_field “${upload_field_name}_name”
$upload_file_name;
38 upload_set_form_field
“${upload_field_name}_content_type” $upload_content_type;
39 upload_set_form_field “${upload_field_name}_path”
$upload_tmp_path;
40
41 # Inform backend about hash and size of a file
42 upload_aggregate_form_field “${upload_field_name}_md5”
$upload_file_md5;
43 upload_aggregate_form_field “${upload_field_name}_size”
$upload_file_size;
44
45 upload_pass_form_field “^submit$|^description$”;
46 upload_cleanup 400 404 499 500-505;
47 }
48
49 # Pass altered request body to a backend
50 location @test {
51 #passenger_enabled on;
52 proxy_pass http://localhost:8080;
53 proxy_temp_path /home/virus/tmp/proxy_temp;
54 }
55 }
56 }

No, I do not think I have 8080 server running.
In the instruction, I do not see it start 8080 server first.

How to start 8080 upstream server? I see it is used by proxy_pass,
what’s the purpose of it?

Thanks,
Yanxin

On 3/29/2011 12:25 AM, Yanxin Z. wrote:

http://127.0.0.1/
Do you have another server running at 8080 on the same machine?


Regards, Vitaly T.
System A.
U.S. +1 (206) 905-9939
Russia +7 911 094-2035

49 # Pass altered request body to a backend
50 location @test {
51 #passenger_enabled on;
52 proxy_pass http://localhost:8080;
53 proxy_temp_path /home/virus/tmp/proxy_temp;
54 }

It said here - pass request body to a backend. Since you don’t have
backend running (proper application who will process request by that
address) then nginx can’t pass it, then it fails. Nginx is fine.


Regards, Vitaly T.
System A.
U.S. +1 (206) 905-9939
Russia +7 911 094-2035

Hi Vitaly,
I change my files a little bit. Let me start from beginning.

The file I have:
conf/nginx.conf
1 worker_processes 1;
2
3 error_log logs/error.log notice;
4
5 working_directory /opt/nginx;
6
7 events {
8 worker_connections 1024;
9 }
10
11 http {
12 include mime.types;
13 default_type application/octet-stream;
14
15 server {
16 listen 80;
17 client_max_body_size 100m;
18
19 # Upload form should be submitted to this location
20 location /upload {
21 # Pass altered request body to this location
22 if ($request_method = POST) {
23 upload_pass @test;
24 break;
25 }
26
27 # Store files to this directory
28 # The directory is hashed, subdirectories 0 1 2 3 4 5 6
7 8 9 should exist
29 upload_store /tmp;
30
31 # Allow uploaded files to be read only by user
32 upload_store_access user:rw group:rw all:rw;
33
34 # Set specified fields in request body
35 upload_set_form_field “${upload_field_name}_name”
$upload_file_name;
36 upload_set_form_field
“${upload_field_name}_content_type” $upload_content_type;
37 upload_set_form_field “${upload_field_name}_path”
$upload_tmp_path;
38
39 # Inform backend about hash and size of a file
40 upload_aggregate_form_field “${upload_field_name}_md5”
$upload_file_md5;
41 upload_aggregate_form_field “${upload_field_name}_size”
$upload_file_size;
42
43 upload_pass_form_field “^submit$|^description$”;
44 upload_cleanup 400 404 499 500-505;
45 }
46
47 # Pass altered request body to a backend
48 location @test {
49 proxy_pass http://localhost:8080;
50 }
51 }
52 }

/html/nginx.conf.default

1
2 #user nobody;
3 worker_processes 1;
4
5 #error_log logs/error.log;
6 #error_log logs/error.log notice;
7 #error_log logs/error.log info;
8
9 #pid logs/nginx.pid;
10
11
12 events {
13 worker_connections 1024;
14 }
15
16
17 http {
18 include mime.types;
19 default_type application/octet-stream;
20
21 #log_format main '$remote_addr - $remote_user [$time_local]
“$request” ’
22 # '$status $body_bytes_sent “$http_referer” ’
23 # ‘"$http_user_agent" “$http_x_forwarded_for”’;
24
25 #access_log logs/access.log main;
26
27 sendfile on;
28 #tcp_nopush on;
29
30 #keepalive_timeout 0;
31 keepalive_timeout 65;
32
33 #gzip on;
34
35 server {
36 listen 8080;
37 server_name localhost;
38
39 #charset koi8-r;
40
41 #access_log logs/host.access.log main;
42
43 location / {
44 root html;
45 index index.html index.htm;
46 }
47 }
48 }

/html/upload.html

1
2
3 Test upload
4
5
6

Select files to upload


7
8

9

10

11

12

13

14
15
16
17
18
19

Then:
I run nginx on 8080 and 80 port
$/opt/nginx/sbin/nginx -c conf/nginx.conf.default
$/opt/nginx/sbin/nginx

I got in the web browser:
http://127.0.0.1/upload.html

I see the form, select the file, and “upload”

Then I see “404 Not Found”.

The error.log shows:

2011/03/28 14:40:15 [error] 19402#0: *2 open() “/opt/nginx/html/upload”
failed (2: No such file or directory), client: 127.0.0.1, server:
localhost, request: “POST /upload HTTP/1.0”, host: “localhost:8080”,
referrer: “http://127.0.0.1/upload.html

I really do not know what should I do? It seems to me I missed the file
upload. But I have no clue how to fix it.

Hopefully my explanation is clear to you.
Thank you very much.
Yanxin

Hello,
I finally realized
I do not need to start backend server 8080 at all.

Although I still have error “502 Bad Gateway”

342 2011/03/28 17:47:44 [error] 30032#0: *1 connect() failed (111:
Connection refused) while connecting to upstream, client:
127.0.0.1, server: , request: “POST /upload HTTP/1.1”, upstream:
http://127.0.0. 1:8080/upload”, host: “127.0.0.1”, referrer:
http://127.0.0.1/upload.html

But the file is uploaded into /tmp already.

what a magic!!

BTW, how to fix this error then?

Thank you very much, Vitaly.

It’s working for me.
Yanxin

On 3/29/2011 4:51 AM, Yanxin Z. wrote:

what a magic!!
BTW, how to fix this error then?

If you need just to put file and not pass it anywhere try config listed
in other thread:

http://forum.nginx.org/read.php?21,186491

It’s still not working, actually, but the thread didn’t started yet.
Visit it later, and community will solve his problem.


Regards, Vitaly T.
System A.
U.S. +1 (206) 905-9939
Russia +7 911 094-2035

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