Tag: Server

The concept of ‘Kernel hotpatching’, sometimes called live patching, was introduced to the Linux community around 2008. Soon after groups began developing differing implementations of the concept. KernelCare, one of the more popular implementations, was originally released in March 2014 by Cloud Linux, Inc.

We have written previously about regularly backing up Storm Servers, but that only covers automated image backups. With the Storm platform, it is possible to take image snapshots of your server whenever you wish.

While it is always important to create a backup of your server’s data, some backup solutions can be costly and unwieldy. Creating a backup of a Storm server is neither of those things. Instead, it’s cost-efficient and easy!

Say your PHP application is unable to load a needed PHP module. The first thing to check is to see if the PHP module is available to the application. The best way to do that is with what is called a “phpinfo” file.

Servers can automatically perform tasks that you would otherwise have to perform yourself, such as running scripts. On Linux servers, the cron utility is the preferred way to automate the running of scripts.

There are two main ways to get cron to run a script. The first is to place a script into one of the following directories:

Servers do a fantastic job of writing down in log files what is happening right that moment. While going back and reading logs later to determine what happened in the past is helpful, it is also useful to watch logs in real time. Linux provides a command line tool that lets us do just that: tail.

One component included with Liquid Web’s Imunify360 Plus, Server Secure, and Server Secure Plus services is an Apache module called Mod Security (often shortened to just “modsec”). Modsec monitors all incoming HTTP requests for malicious behavior and does not complete requests that meet certain criteria. These criteria are spelled out in what are called “rules” or “rulesets”.

Running your first webserver can be daunting. Even if you are familiar with running a cPanel account, there is much to learn regarding Web Host Manager (WHM). The first step to successfully running WHM is creating a cPanel account.

So your business has grown, and you need to increase your number of servers to two or more. Now is the time to decide on a hostname scheme for multiple servers. Picking a hostname scheme that works for your endeavor pays dividends down the road in terms of keeping your setup organized. While the topic may seem trivial, the wrong hostname scheme can make your day to day work needlessly complex.

Linux has a robust permissions system. This is a very good thing, as it enables a clear separation of roles among users, especially between the root user and your average user. Sometimes, though, you might want your average user to have some or all of root's privileges. In Linux, this is accomplished with sudo.