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Liquid Web Knowledge Base

Knowledge Base


Apache Error: Premature End of Script Headers
Filed under: Technical Support

‘Premature end of script headers’ can be an extremely vague error that leads to some headaches. Here are some suggestions that might help you fix the problem.

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Apache Error: “semget: No space left on device”
Filed under: Technical Support

If Apache fails, and will not successfully start again, check the error log. If you see an error similar to the following, it could indicate that your server has run out of semaphores.

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WordPress Tutorial 3: How to Install a New Plugin, Theme, or Widget
Filed under: Technical Support

This is part 3 in an ongoing series on WordPress. Please see Part 1: WordPress Tutorial 1: Installation Setup and Part 2: WordPress Tutorial 2: Terminology and Part 4: WordPress Tutorial 4: Recommended WordPress Plugins. Please note that this guide is primarily intended for customers utilizing a Linux server running cPanel. If you do not have a Linux server with cPanel please see the documentation at wordpress.org for further assistance.

The three most common changes you will make to your website involve the look (themes), the functionality (plugins), and modular elements (widgets).
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Liquid Web SAN – Linux iSCSI Initiation
Filed under: Technical Support

Provided that you have access to the Liquid Web SAN you will need to set up your iSCSI initiator so that you can access your volume. Read on to find out how. (more…)

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What is Brute Force Detection (BFD)?
Filed under: Technical Support

BFD (Brute Force Detection) is a critically important part of protecting your server from malicious attacks.

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Setting Alternate SMTP port in Plesk on Linux
Filed under: Technical Support

Getting Plesk to listen for SMTP connections on an alternate port is not that difficult to do. However unlike a cPanel environment, configuring Plesk to do so must be done outside of the control panel via the command line.

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Enable Remote MySQL Connections in cPanel
Filed under: Technical Support

Remote MySQL connections are disabled by default in cPanel servers because they are considered a potential security threat. Using the tools in the Web Host Manager (WHM) and the domain-level cPanel interface (usually http://domainname.com/cpanel) remote hosts can be added which the server allows to connect to the MySQL service.
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“The website is down! Now what?” Help Us Help You!
Filed under: Technical Support

If you are unable to connect to your website there are a few things you can try (if you have the time) to help us better diagnose where the problem lies.

Simply put, the more quickly this information is collected the more quickly we can fix whatever is causing almost any issue. Help us help you!
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File Upload Problems
Filed under: Technical Support

Using Fantastico, a new CMS(Content Management System) such as WordPress, Joomla, or Mambo has been installed on your website.  It does not matter which CMS is installed, they all need to be able to write files on the server.  And they all will show “permission denied” errors during the first-time setup or the first time an upload is attempted via their built-in web interface.  This happens when the webserver software (usually Apache) does not have write access to a user’s files.

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Why Is Most of My Memory Being Used?
Filed under: Technical Support

We often get calls and tickets from VPS and dedicated customers wondering why, when their server is largely idle, much of their RAM appears to be in use.

When RAM is not needed for other functions, your server will load frequently-accessed files into memory in order to read them more quickly. When a file is loaded into RAM, the server can access the information orders of magnitude faster than from disk. A current SATA disk can read files at 100 MB/second, if the files are in sequential units. However, RAM can be read at GB/second, or even tens of GB/second rates.

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