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My APACHE2 server is not displaying images.

Marco59790 -  
 MMD54 -
Hello everyone,

I'm experiencing a problem with my APACHE2 server that doesn't display images.
I've been looking for a solution for 4 days, but I'm starting to hit a wall.
And for once, even on CCM, I haven't found the solution.

Indeed, no matter which browser I use, my images do not display.
When I try to access an image.png that's located at the root of my web server, I get this message on Firefox: The image "h t t p ://192.168.0.10/chrome.png" cannot be displayed because it contains errors.

I've checked with other images, same problem; my image was tested on another Apache server at work and it displays correctly.

My server is running on Debian 6 with Apache 2.

Thank you in advance for your help.

Configuration: Windows 7 / Internet Explorer 8.0

7 answers

  1. Selmak Carter
     
    Hi,

    I think your problem is due to permissions, if you have properly installed your server.
    For example, if in your /var/www folder there are:

    - index.html
    - style.css

    and a directory images containing image files (.png, .jpeg, etc..)

    You need to grant read and execution permissions.
    To do this, open the terminal, then type these commands: 

    su cd /var/www


    Then check the permissions by typing
    ls -l

    I get this: 

    drwxr--r-- 2 root root 4096 13 Mar 14:15 images -rw-r--r-- 1 root root 3007 13 Mar 14:15 index.html -rw-r--r-- 1 root root 2480 13 Mar 14:15 style.css

    As you can see, my images folder does not have access permissions for the 'group' and 'all'

    So, when you use your browser, it won't display the images in the /var/www/images directory
    Therefore, you just need to type these commands in your terminal: 

    chmod 755 images /etc/init.d/apache2 restart


    Then open your browser, type 127.0.0.1, and press "F5"
    Of course, you will need to adapt this example to your case.

    Given your problem, I don't think it's due to the firewall since only your images are not displaying, whereas everything goes through port 80 unless you need to configure some configuration files on Apache (folder access), meaning you need to specify to Apache where your images are located and also grant the necessary permissions.
    1
    1. lami20j Posted messages 21506 Registration date   Status Moderator, Security Contributor Last intervention   3 571
       
      Hello,

      I took the liberty of removing the bold tags.
      Otherwise, he can see his image on the server.
      0
    2. Selmak Carter
       
      OK, but I saw that he was talking about two servers, one at his work and the other locally,
      if I understood correctly, he wants to display his images locally (192.168.0.10), because on Debian the port 80 is open by default, as soon as you install APACHE, PHP, MYSQL everything is already set up.
      Anyway, if he sees his images locally, I think he will also need to configure his router.
      0
    3. lami20j Posted messages 21506 Registration date   Status Moderator, Security Contributor Last intervention   3 571
       
      Re,

      by default, as soon as you install APACHE, PHP, MYSQL everything is already ready.
      Absolutely.

      I think he will also have to configure his router.
      Indeed.
      If he wants to access his server from outside, he has no choice. He should set up a port forwarding on his router.
      0
  2. lami20j Posted messages 21506 Registration date   Status Moderator, Security Contributor Last intervention   3 571
     
    Hello,

    Did you make any changes in the configuration file?

    Show the result of 
    apache2ctl -M rgrep documentroot /etc/apache2 -i


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  3. Marco59790
     
    I made few modifications to the apache2.conf file

    here is the result of apache2ctl -M
    Loaded Modules:
    core_module (static)
    log_config_module (static)
    logio_module (static)
    mpm_prefork_module (static)
    http_module (static)
    so_module (static)
    alias_module (shared)
    auth_basic_module (shared)
    authn_file_module (shared)
    authz_default_module (shared)
    authz_groupfile_module (shared)
    authz_host_module (shared)
    authz_user_module (shared)
    autoindex_module (shared)
    cgi_module (shared)
    deflate_module (shared)
    dir_module (shared)
    env_module (shared)
    mime_module (shared)
    negotiation_module (shared)
    perl_module (shared)
    php5_module (shared)
    python_module (shared)
    reqtimeout_module (shared)
    setenvif_module (shared)
    status_module (shared)
    Syntax OK

    root@192.168.0.10:~# rgrep documentroot /etc/apache2 -i
    /etc/apache2/sites-enabled/000-default: DocumentRoot /var/www
    /etc/apache2/sites-available/pcc: DocumentRoot /var/www/PCC/
    /etc/apache2/sites-available/default: DocumentRoot /var/www
    /etc/apache2/sites-available/default-ssl: DocumentRoot /var/www
    /etc/apache2/httpd.conf:DocumentRoot /var/www

    Thank you for your response and your analysis.
    0
    1. lami20j Posted messages 21506 Registration date   Status Moderator, Security Contributor Last intervention   3 571
       
      /etc/apache2/httpd.conf:DocumentRoot /var/www
      The httpd.conf file (which is basically useless on Debian, I've always hated the way Debian developers have configured Apache) should be empty.

      Is your image located in /var/www?
      0
    2. Marco59790
       
      Yes, my image is located in /var/www
      What do you recommend for the httpd.conf?
      Should I leave it empty
      Thank you for your answers.
      0
    3. lami20j Posted messages 21506 Registration date   Status Moderator, Security Contributor Last intervention   3 571
       
      Display 

      file /var/www/chrome.png


      What do you recommend for the httpd.conf?
      I don't know what you've put in there. By default, it's empty.
      Display 
      cat /etc/apache2/httpd.conf


      /etc/apache2/sites-available/pcc: DocumentRoot /var/www/PCC/
      What is pcc? A virtual host?
      0
    4. Marco59790
       
      root@192.168.0.10:/etc/apache2# file /var/www/chrome.png
      /var/www/chrome.png: PNG image data, 256 x 256, 8-bit/color RGBA, non-interlaced

      don't worry about /etc/apache2/sites-available/pcc: DocumentRoot /var/www/PCC/
      I was trying out the virtual host but I'll look into that later.

      I just emptied the httpd.conf but nothing changes, my apache2 server is not displaying images.
      0
    5. lami20j Posted messages 21506 Registration date   Status Moderator, Security Contributor Last intervention   3 571
       
      Restart your Apache server.
      As root 
      /etc/init.d/apache2 stop /etc/init.d/apache2 start


      Still as root 
      >/var/log/apache2/error.log >/var/log/apache2/access.log


      Then go to http://localhost/chrome.png and display (still as root) 
      cat /var/log/apache2/{access,***,error}.log
      0
  4. Marco59
     
    ``` root@PANDORA:~# /etc/init.d/apache2 stop
    Stopping web server: apache2apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName ==> I don't understand ... waiting .
    root@PANDORA:~# /etc/init.d/apache2 start
    Starting web server: apache2apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName ==> I don't understand
    root@PANDORA:~# ps -eaf|grep apache
    root 2903 1 0 12:43 ? 00:00:00 /usr/sbin/apache2 -k start
    www-data 2910 2903 0 12:43 ? 00:00:00 /usr/sbin/apache2 -k start
    www-data 2911 2903 0 12:43 ? 00:00:00 /usr/sbin/apache2 -k start
    www-data 2912 2903 0 12:43 ? 00:00:00 /usr/sbin/apache2 -k start
    www-data 2913 2903 0 12:43 ? 00:00:00 /usr/sbin/apache2 -k start
    www-data 2914 2903 0 12:43 ? 00:00:00 /usr/sbin/apache2 -k start
    root 2919 2145 0 12:44 pts/0 00:00:00 grep apache
    root@PANDORA:~#

    root@PANDORA:~# cat /var/log/apache2/{access,***,error}.log
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)" ```
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  6. Marco-fever Posted messages 3 Status Member
     
    root@PANDORA:~# /etc/init.d/apache2 stop
    Stopping web server: apache2apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName ==> I don't understand ... waiting .
    root@PANDORA:~# /etc/init.d/apache2 start
    Starting web server: apache2apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName ==> I don't understand
    root@PANDORA:~# ps -eaf|grep apache
    root 2903 1 0 12:43 ? 00:00:00 /usr/sbin/apache2 -k start
    www-data 2910 2903 0 12:43 ? 00:00:00 /usr/sbin/apache2 -k start
    www-data 2911 2903 0 12:43 ? 00:00:00 /usr/sbin/apache2 -k start
    www-data 2912 2903 0 12:43 ? 00:00:00 /usr/sbin/apache2 -k start
    www-data 2913 2903 0 12:43 ? 00:00:00 /usr/sbin/apache2 -k start
    www-data 2914 2903 0 12:43 ? 00:00:00 /usr/sbin/apache2 -k start
    root 2919 2145 0 12:44 pts/0 00:00:00 grep apache
    root@PANDORA:~#

    The image displays well locally on the Linux server via iceweasel.

    root@PANDORA:~# cat /var/log/apache2/{access,***,error}.log
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"
    localhost:80 ::1 - - [13/Mar/2011:08:02:42 +0100] "OPTIONS * HTTP/1.0" 200 136 "-" "Apache (internal dummy connection)"

    Sorry for the late reply CCM delete all my messages (I don't understand why) I signed up we'll see where the new nickname comes from.

    Thank you for your response.
    0
    1. lami20j Posted messages 21506 Registration date   Status Moderator, Security Contributor Last intervention   3 571
       
      I have restored all your messages.
      Apparently, your image is displaying.
      I will give you some explanations later.
      0
    2. Marco-fever Posted messages 3 Status Member
       
      Okay, thank you.
      As for my image, yes, it displays correctly locally on the server.
      I don't understand.
      I read that Debian has a firewall? Should it be configured?
      Thank you for your help.
      0
  7. lami20j Posted messages 21506 Registration date   Status Moderator, Security Contributor Last intervention   3 571
     
    Re,

    root@192.168.0.10:~# /etc/init.d/apache2 start
    -bash: /etc/init.d/apache2: No such file or directory <== I don't quite understand!!

    It's normal.
    You typed ect instead of etc

    Starting web server: apache2apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName ==> I don't understand
    It's just a warning.
    To get rid of it, simply add in /etc/apache2/apache2.conf the directive
    ServerName 127.0.0.1

    I read that Debian has a firewall? Should it be configured?
    In GNU/Linux systems, the firewall is integrated into the kernel and is called netfilter

    Access to the server can be configured on the server side as well as on the firewall side.
    You should read the documentation.

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  8. Marco-fever Posted messages 3 Status Member
     
    Even changing the rights doesn't work.
    I also tried changing the owner, but that doesn't work either.

    Starting web server: apache2apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName ==> I don't understand.
    It's just a warning.
    To get rid of it, just add the directive
    ServerName 127.0.0.1 in /etc/apache2/apache2.conf ==> thanks, it works; no more error messages.

    Now I don't understand anything; I briefly managed to display the images on FIRE FOX, but as soon as I test on IE8, no images, just a nice red cross instead. And then when I went back to FIRE FOX, nothing!!! I'm despairing.... -_-

    h t t p://192.168.0.10/images_page/interdit.png
    The image "http://192.168.0.10/images_page/interdit.png" cannot be displayed because it contains errors.

    Thank you for your help.
    0
    1. MMD54
       
      Did you find the solution because I have the same problem as you but with a Raspberry Pi!
      Please.

      MMD
      0