How To Fix Mod Authz Host Apache Errors In Linux

Regardless of which line you might have trouble with, the fix has little to do with mod_authz_host not being installed or even loaded in RAM. In fact, if you’re getting this error it means that the apache2 server service is correctly loading the  module. The problem merely has to do with the fact that a directive is out of place somewhere, and rearranging the code should fix your problem quite quickly. Please note that you will occasionally see instructions to install mod_authz_host in apache2, which is irrelevant to this discussion. Your errors don’t come from a lack of a specific package nor do they come from any sort of unfulfilled dependency. The way the developers elected to phrase these errors lead to these common misconceptions.

Correcting the restrict.conf Module Directives

For the sake of discussion, we’ll use the Linux distribution encyclopedia at distrowatch.com for our examples. The official apache2 documentation uses dev.example.com as an example, and in any case, you won’t want to use either of these addresses. Open the  file with a text editor. Since this is in a protected directory, you’ll need to have root access. We used , but you could also use vi or another text editor you prefer. You don’t even necessarily have to use a console editor, but make sure to use gksu instead of sudo if appropriate to do so.

Once you’ve loaded the file, pay close attention to something that reads, for example: Order deny,allow Deny from all Allow from distrowatch.com This text should only exist inside of blocks. Note the space in the first tag. If you have that line of text floating around outside of any blocks, either add tags around it or move it so that it reads as such:     Order deny,allow     Deny from all     Allow from distrowatch.com Remember that you’ll need to replace distrowatch.com with the actual URL you’re working with. If you find any lines that reference dev.example.com directly, then you’ve either copied them directly from example code or they’re added by default. The example.com domain merely exists for illustration in technical documents and serves no real purpose. The official documentation at httpd.apache.org/docs/2.2/howto/access.html does indeed reference them. You can probably safely remove these when you add the new text in. Should you ever need to include a directory in your restrict.conf file, then you could replace tags with tags, but you need to make sure to maintain the space in the first tag once more. Make sure to save the document and then close it before restarting the apache2 service. You shouldn’t have any further problems from here on out. This is what the apache server means when it returns an error something like:

The actual error would have a line number in place of the octothorpe, but it’s indicating that the directives aren’t safely enclosed inside of said tags. You may wish to navigate directly to the line given in the error when debugging the script to check what’s wrong with it. While the error in question will tell you that the Apache error log may have more information, it will probably merely reinforce the same concepts discussed here. Future syntax errors can be corrected in a similar fashion. You might find that after fixing that one, the apache2 service spits out another error. This is normal, as strange as that might sound because it only executes code up until the first line it finds a problem with. If there were problems further down the line, then it would have never got to them. Should you have any such issues, then pay close attention to the line number when editing the  file. If you’re using nano to edit the file, then you can always hold down the Ctrl key and push the C key to find which line your cursor is currently on. This will make the debugging process go much more smoothly. You might find that you have multiple blocks floating around in such a manner that aren’t attached to anything. Each of these need to have tags on them. Remove the extra blocks anytime that you find you have multiple copies of the same URL with the same exact directives since these duplicates can potentially cause problems. You generally only ever need to have a single copy of any specific URL, since you shouldn’t pass additional directives about one to the apache2 server as they might ultimately countermand one another.

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