SID-02157: Styles and images missing after install

Status:	Answered	TWiki version:	6.0.2	Perl version:	5.18.2
Category:	CategoryInstallation	Server OS:	Ubuntu 14	Last update:	7 years ago

Just installed TWiki 6.0.2 on Ubuntu 14 LTS. After the installation, I notice that images such as those on the banner menu are not being loaded. This seems to be the same problem as http://twiki.org/cgi-bin/view/Support/SID-01478, but the solutions there did not help.

The webserver user has appropriate permissions to all files in the /var/www/twiki subdirectory.

My Alias (/etc/apache2/conf-enabled/twiki.conf) is

Alias /pub/TWiki   "/var/www/twiki/pub/TWiki"

My Pub config settings (.../twiki/lib/LocalSite.cfg) are

$TWiki::cfg{PubUrlPath} = '/<ProjectName>';

$TWiki::cfg{PubDir} = '/var/www/twiki/pub';

where <ProjectName> is the name of our project that I specified during installation in order to abbreviate URLs. The answer that I linked to above indicates that the Alias must match {PubUrlPath}, but changing {PubUrlPath} to /pub/TWiki generates a configuration complaint that "I was expecting <ProjectName>." If I instead change the Alias to <ProjectName>, nothing happens. The front page still fails to load styles and images.

I've tried various combinations of Alias, {PubUrlPath} and {PubDir}, but nothing fixes the problem.

-- TWiki Guest - 2016-02-23

Discussion and Answer

Let me explain what the directives in the config files do:

• Alias /pub/TWiki "/var/www/twiki/pub/TWiki" maps URLs beginning with /pub/TWiki to files in /var/www/twiki/pub/TWiki. This is strange because it only maps URLs from the TWiki web. I'd expect something like Alias /pub "/var/www/twiki/pub". Have you used the TWiki/ApacheConfigGenerator or did you create the config file per hand?
  • Entries in the apache error log under /var/log/apache2/error.log should tell you under which path Apache was looking for the files and which type of error occurred, you can check with your installation.
  • I am surprised that you have the config file under /etc/apache2/conf-enabled because /etc/apache2/sites-enabled is the usual path for apache services.
• $TWiki::cfg{PubDir} = '/var/www/twiki/pub'; looks fine.
• For UrlPath, I'd expect $TWiki::cfg{PubUrlPath}='/pub', corresponding to the entry in Apache's Alias directive. I don't know where you specified a name of your project "to abbreviate URLs" during installation - could you please explain this?

-- Harald Jörg - 2016-02-23

As Harald mentions, best to use the ApacheConfigGenerator the generate the twiki.conf file. In essence, if you have this in twiki.conf:

ScriptAlias /do "/var/www/twiki/bin

Alias /pub  "/var/www/twiki/pub"

then you should have these twiki/lib/LocalLib.cfg settings:

$TWiki::cfg{ScriptUrlPath} = '/do';

$TWiki::cfg{PubUrlPath} = '/pub';

$TWiki::cfg{PubDir} = '/var/www/twiki/pub';

-- Peter Thoeny - 2016-02-24

Thank you both for your help! The original installation was several weeks ago, and my notes (and memory) are incomplete.

I did use the ! ConfigGenerator, but I don't deny that I may have botched it.

I don't know why I have /pub/TWiki instead of /pub, but I doubt that I changed the default settings of my own initiative. I must have misunderstood what the installer or ! ConfigGenerator was asking. I had noticed that most examples don't have the /TWiki, but I assumed that adding it was something that changed with 6.0.

Harald: During installation, I understood the installer's request for an Alias to mean that I can shorten URL's of the form /var/www/twiki/pub to <ProjectName>/pub. That's what I was referring to.

Here's what I have now, and it works!:

In twiki.conf:

! ScriptAlias      /I2U2   "/var/www/twiki/bin"

Alias         /pub   "/var/www/twiki/pub/"

In !LocalSite.cfg:

$TWiki::cfg{PubUrlPath} = '/pub';

$TWiki::cfg{PubDir} = '/var/www/twiki/pub';

-- TWiki Guest - 2016-02-26

Thanks for this thread. I too used the config generator and the problem was $TWiki::cfg{PubDir} = '/var/www/twiki/pub'; was set incorrectly in LocalSite.cfg (I assume this filename changed from LocalLib.cfg).

-- TWiki Guest - 2018-02-21

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